60.	CONDENSED MATTER: STRUCTURAL, MECHANICAL, AND THERMAL PROPERTIES
	61.	Structure of solids and liquids; crystallography (for surface, interface, and thin film structure, see section 68)
N	61.05.-a	Techniques for structure determination
	... ... ...	Microscopy of surfaces, interfaces, and thin films, see 68.37.−d
N	61.05.C-	X-ray diffraction and scattering (for x-ray diffractometers, see 07.85.Jy; for x-ray studies of crystal defects, see 61.72.Dd, Ff)
N	61.05.cc	Theories of x-ray diffraction and scattering
N	61.05.cf	X-ray scattering (including small-angle scattering)
N	61.05.cj	X-ray absorption spectroscopy: EXAFS, NEXAFS, XANES, etc. (for x-ray and EXAFS applications in biological physics, see 87.64.kd)
N	61.05.cm	X-ray reflectometry (surfaces, interfaces, films)
N	61.05.cp	X-ray diffraction
N	61.05.F-	Neutron diffraction and scattering
N	61.05.fd	Theories of neutron diffraction and scattering
N	61.05.fg	Neutron scattering (including small-angle scattering)
N	61.05.fj	Neutron reflectometry
N	61.05.fm	Neutron diffraction
	... ... ...	Microscopy of surfaces, interfaces, and thin films, see 68.37.−d
N	61.05.J-	Electron diffraction and scattering (for electron diffractometers, see 07.78.+s)
N	61.05.jd	Theories of electron diffraction and scattering
N	61.05.jh	Low-energy electron diffraction (LEED) and reflection high-energy electron diffraction (RHEED)
N	61.05.jm	Convergent-beam electron diffraction, selected-area electron diffraction, nanodiffraction
N	61.05.jp	Electron holography
N	61.05.js	X-ray photoelectron diffraction
N	61.05.Np	Atom, molecule, and ion scattering (for structure determination only)
N	61.05.Qr	Magnetic resonance techniques; Mössbauer spectroscopy (for structure determination only)
D	61.10.-i	X-ray diffraction and scattering (for X−ray diffractometers, see 07.85.Jy; for X−ray studies of crystal defects, see 61.72.Dd, Ff) (Use 61.05.C-)
D	61.10.Dp	Theories of diffraction and scattering (Use 61.05.cc)
D	61.10.Eq	X-ray scattering (including small-angle scattering) (Use 61.05.cf)
D	61.10.Ht	X-ray absorption spectroscopy: EXAFS, NEXAFS, XANES, etc. (Use 61.05.cj)
D	61.10.Kw	X-ray reflectometry (surfaces, interfaces, films) (Use 61.05.cm)
D	61.10.Nz	X-ray diffraction (Use 61.05.cp)
D	61.12.-q	Neutron diffraction and scattering (Use 61.05.F-)
D	61.12.Bt	Theories of diffraction and scattering (Use 61.05.fd)
D	61.12.Ex	Neutron scattering (including small-angle scattering) (Use 61.05.fg)
D	61.12.Ha	Neutron reflectometry (Use 61.05.fj)
D	61.12.Ld	Neutron diffraction (Use 61.05.fm)
D	61.14.-x	Electron diffraction and scattering (for electron diffractometers, see 07.78.+s) (Use 61.05.J-)
D	61.14.Dc	Theories of diffraction and scattering (Use 61.05.jd)
D	61.14.Hg	Low-energy electron diffraction (LEED) and reflection high-energy electron diffraction (RHEED) (Use 61.05.jh)
D	61.14.Lj	Convergent-beam electron diffraction, selected-area electron diffraction, nanodiffraction (Use 61.05.jm)
D	61.14.Nm	Electron holography (Use 61.05.jp)
D	61.14.Qp	X-ray photoelectron diffraction (Use 61.05.js)
D	61.18.-j	Other methods of structure determination (Use 61.05.-a)
D	61.18.Bn	Atom, molecule, and ion scattering (Use 61.05.Np)
D	61.18.Fs	Magnetic resonance techniques; Mössbauer spectroscopy (Use 61.05.Qr)
	61.20.-p	Structure of liquids
	61.20.Gy	Theory and models of liquid structure
	61.20.Ja	Computer simulation of liquid structure
S	61.20.Lc	Time-dependent properties; relaxation
M	61.20.Lc	Time-dependent properties; relaxation (for glass transitions, see 64.70.P−)
	61.20.Ne	Structure of simple liquids
	61.20.Qg	Structure of associated liquids: electrolytes, molten salts, etc.
	61.25.-f	Studies of specific liquid structures
	61.25.Bi	Liquid noble gases
	61.25.Em	Molecular liquids
N	61.25.H-	Macromolecular and polymers solutions; polymer melts
N	61.25.he	Polymer solutions
N	61.25.hk	Polymer melts and blends
N	61.25.hp	Polymer swelling, cross linking
D	61.25.Hq	Macromolecular and polymer solutions; polymer melts; swelling (Use 61.25.H-)
	61.25.Mv	Liquid metals and alloys
S	61.30.-v	Liquid crystals
M	61.30.-v	Liquid crystals (for phase transitions in liquid crystals, see 64.70.M−; for liquid crystals as dielectric materials, see 77.84.Nh; for liquid crystals as optical materials, see 42.70.Df; for liquid crystal devices, see 42.79.Kr)
	61.30.Cz	Molecular and microscopic models and theories of liquid crystal structure
	61.30.Dk	Continuum models and theories of liquid crystal structure
	61.30.Eb	Experimental determinations of smectic, nematic, cholesteric, and other structures
	61.30.Gd	Orientational order of liquid crystals; electric and magnetic field effects on order
	61.30.Hn	Surface phenomena: alignment, anchoring, anchoring transitions, surface-induced layering, surface-induced ordering, wetting, prewetting transitions, and wetting transitions
	61.30.Jf	Defects in liquid crystals
	61.30.Mp	Blue phases and other defect-phases
	61.30.Pq	Microconfined liquid crystals: droplets, cylinders, randomly confined liquid crystals, polymer dispersed liquid crystals, and porous systems
	61.30.St	Lyotropic phases
	61.30.Vx	Polymer liquid crystals
	61.41.+e	Polymers, elastomers, and plastics (see also 81.05.Lg in materials science; for rheology of polymers, see section 83; for polymer reactions and polymerization, see 82.35.−x in physical chemistry and chemical physics)
	61.43.-j	Disordered solids (see also 81.05.Gc Amorphous semiconductors, 81.05.Kf Glasses, and 81.05.Rm Porous materials; granular materials in materials science; for photoluminescence of disordered solids, see 78.55.Mb and 78.55.Qr)
	61.43.Bn	Structural modeling: serial-addition models, computer simulation
	61.43.Dq	Amorphous semiconductors, metals, and alloys
	61.43.Er	Other amorphous solids
	61.43.Fs	Glasses
	61.43.Gt	Powders, porous materials
	61.43.Hv	Fractals; macroscopic aggregates (including diffusion-limited aggregates)
	61.44.-n	Semi-periodic solids
	61.44.Br	Quasicrystals
	61.44.Fw	Incommensurate crystals
S	61.46.-w	Nanoscale materials
M	61.46.-w	Structure of nanoscale materials (for thermal properties of nanocrystals and nanotubes, see 65.80.+n; for mechanical properties of nanoscale systems, see 62.25.−g; for electronic transport in nanoscale materials, see 73.63.−b; see also 62.23.−c Structural classes of nanoscale systems; 64.70.Nd Structural transitions in nanoscale materials)
S	61.46.Bc	Clusters
M	61.46.Bc	Structure of clusters (e.g., metcars; not fragments of crystals; free or loosely aggregated or loosely attached to a substrate) (see also 61.48.−c for structure of fullerenes)
S	61.46.Df	Nanoparticles
M	61.46.Df	Structure of nanocrystals and nanoparticles ("colloidal" quantum dots but not gate-isolated embedded quantum dots)
	61.46.Fg	Nanotubes
	61.46.Hk	Nanocrystals
N	61.46.Km	Structure of nanowires and nanorods (long, free or loosely attached, quantum wires and quantum rods, but not gate-isolated embedded quantum wires)
N	61.46.Np	Structure of nanotubes (hollow nanowires) (see 61.48.De for carbon nanotubes, boron nanotubes, and closely related graphitelike systems)
D	61.48.+c	Fullerenes and fullerene-related materials (see also 81.05.Tp Fullerenes and related materials in materials science) (Use 61.48.-c)
N	61.48.-c	Structure of fullerenes and related hollow molecular clusters (see also 81.05.Tp Fullerenes and related materials in materials science)
N	61.48.De	Structure of carbon nanotubes, boron nanotubes, and closely related graphitelike systems (for structure of hollow nanowires, see 61.46.Np)
S	61.50.-f	Crystalline state
M	61.50.-f	Structure of bulk crystals
	61.50.Ah	Theory of crystal structure, crystal symmetry; calculations and modeling
	... ... ...	Crystal growth, see 81.10.−h
	61.50.Ks	Crystallographic aspects of phase transformations; pressure effects (see also 81.30.Hd in materials science)
	61.50.Lt	Crystal binding; cohesive energy
	61.50.Nw	Crystal stoichiometry
S	61.66.-f	Structure of specific crystalline solids
M	61.66.-f	Structure of specific crystalline solids (for surface structure, see 68.35.B−)
	61.66.Bi	Elemental solids
	61.66.Dk	Alloys
	61.66.Fn	Inorganic compounds
	61.66.Hq	Organic compounds
	... ... ...	Quantum crystals, see 67.80.−s
	61.68.+n	Crystallographic databases
	61.72.-y	Defects and impurities in crystals; microstructure (for radiation induced defects, see 61.80.−x; for defects in surfaces, interfaces, and thin films, see 68.35.Dv and 68.55.Ln; see also 85.40.Ry Impurity doping, diffusion, and ion implantation technology)
	61.72.Bb	Theories and models of crystal defects
	61.72.Cc	Kinetics of defect formation and annealing
	61.72.Dd	Experimental determination of defects by diffraction and scattering
	61.72.Ff	Direct observation of dislocations and other defects (etch pits, decoration, electron microscopy, x-ray topography, etc.)
	61.72.Hh	Indirect evidence of dislocations and other defects (resistivity, slip, creep, strains, internal friction, EPR, NMR, etc.)
N	61.72.J-	Point defects and defect clusters
N	61.72.jd	Vacancies
D	61.72.Ji	Point defects (vacancies, interstitials, color centers, etc.) and defect clusters (Use 61.72.J-)
N	61.72.jj	Interstitials
N	61.72.jn	Color centers
	61.72.Lk	Linear defects: dislocations, disclinations
	61.72.Mm	Grain and twin boundaries
	61.72.Nn	Stacking faults and other planar or extended defects
	61.72.Qq	Microscopic defects (voids, inclusions, etc.)
N	61.72.S-	Impurities in crystals
N	61.72.sd	Impurity concentration
N	61.72.sh	Impurity distribution
N	61.72.sm	Impurity gradients
D	61.72.Ss	Impurity concentration, distribution, and gradients (for impurities in thin films, see 68.55.Ln; see also 66.30.Jt Diffusion of impurities) (Use 61.72.S-)
D	61.72.Tt	Doping and impurity implantation in germanium and silicon (Use 61.72.uf)
N	61.72.U-	Doping and impurity implantation
N	61.72.uf	Ge and Si
N	61.72.uj	III–V and II–VI semiconductors
N	61.72.up	Other materials
D	61.72.Vv	Doping and impurity implantation in III–V and II–VI semiconductors (Use 61.72.uj)
D	61.72.Ww	Doping and impurity implantation in other materials (Use 61.72.up)
	61.72.Yx	Interaction between different crystal defects; gettering effect
S	61.80.-x	Physical radiation effects, radiation damage
M	61.80.-x	Physical radiation effects, radiation damage (for photochemical reactions, see 82.50.−m; for effects of ionizing radiation on biological systems, see 87.53.−j)
	... ... ...	Radiation treatments, see 81.40.Wx
	61.80.Az	Theory and models of radiation effects
	61.80.Ba	Ultraviolet, visible, and infrared radiation effects (including laser radiation)
	61.80.Cb	X-ray effects
	61.80.Ed	γ-ray effects
	61.80.Fe	Electron and positron radiation effects
	61.80.Hg	Neutron radiation effects
S	61.80.Jh	Ion radiation effects
M	61.80.Jh	Ion radiation effects (for ion implantation, see 61.72.U−)
	61.80.Lj	Atom and molecule irradiation effects
	... ... ...	Channeling, blocking, and energy loss of particles, see 61.85.+p
	61.82.-d	Radiation effects on specific materials
	61.82.Bg	Metals and alloys
	61.82.Fk	Semiconductors
	61.82.Ms	Insulators
	61.82.Pv	Polymers, organic compounds
	61.82.Rx	Nanocrystalline materials
	61.85.+p	Channeling phenomena (blocking, energy loss, etc.)
	61.90.+d	Other topics in structure of solids and liquids; crystallography (restricted to new topics in section 61)
S	62.	Mechanical and acoustical properties of condensed matter
M	62.	Mechanical and acoustical properties of condensed matter (for mechanical properties of tissues and organs, see 87.19.R−; for mechanical properties of nanoscale systems, see 62.25.−g; for nonlinear acoustics of solids, see 43.25.Dc—in Acoustics Appendix; for mechanical and acoustical properties of interfaces and thin films, see 68.35.Gy, 68.35.Iv, and 68.60.Bs; for mechanical properties related to treatment conditions, see 81.40.Jj, Lm, Np—in material science; for mechanical and acoustical properties of superconductors, see 74.25.Ld; for mechanical and acoustical properties of rocks and minerals, see 91.60.Ba, Dc, and Lj)
S	62.10.+s	Mechanical properties of liquids
M	62.10.+s	Mechanical properties of liquids (for viscosity of liquids, see 66.20.−d)
	62.20.-x	Mechanical properties of solids
N	62.20.D-	Elasticity (for materials treatment effects on elastic properties, see 81.40.Jj)
D	62.20.Dc	Elasticity, elastic constants (Use 62.20.D-)
N	62.20.de	Elastic moduli
N	62.20.dj	Poisson's ratio
N	62.20.dq	Other elastic constants
N	62.20.F-	Deformation and plasticity (see also 83.50.−v Deformation and flow in rheology; for materials treatment effects on deformation, see 81.40.Lm)
D	62.20.Fe	Deformation and plasticity (including yield, ductility, and superplasticity) (see also 83.50.−v Deformation and flow in rheology) (Use 62.20.F-)
N	62.20.fg	Shape-memory effect; yield stress; superelasticity
N	62.20.fk	Ductility, malleability
N	62.20.fq	Plasticity and superplasticity
	62.20.Hg	Creep
N	62.20.M-	Structural failure of materials (for materials treatment effects on microstructure, see 81.40.Np)
N	62.20.me	Fatigue
N	62.20.mj	Brittleness
D	62.20.Mk	Fatigue, brittleness, fracture, and cracks (Use 62.20.M-)
N	62.20.mm	Fracture
N	62.20.mq	Buckling
N	62.20.mt	Cracks
S	62.20.Qp	Tribology and hardness
M	62.20.Qp	Friction, tribology, and hardness (see also 46.55.+d Tribology and mechanical contacts in continuum mechanics of solids; for materials treatment effects on friction related properties, see 81.40.Pq)
N	62.23.-c	Structural classes of nanoscale systems (see also 81.07.−b Nanoscale materials and structures: fabrication and characterization in materials science)
N	62.23.Eg	Nanodots
N	62.23.Hj	Nanowires
N	62.23.Kn	Nanosheets
N	62.23.Pq	Composites (nanosystems embedded in a larger structure)
N	62.23.St	Complex nanostructures, including patterned or assembled structures
D	62.25.+g	Mechanical properties of nanoscale materials (Use 62.25.-g)
N	62.25.-g	Mechanical properties of nanoscale systems (for structure of nanoscale systems, see 61.46.−w; for structural transitions in nanoscale materials, see 64.70.Nd; for electronic transport in nanoscale systems, see 73.63.−b)
N	62.25.De	Low-frequency properties: response coefficients
N	62.25.Fg	High-frequency properties, responses to resonant or transient (time-dependent) fields
N	62.25.Jk	Mechanical modes of vibration
N	62.25.Mn	Fracture/brittleness
	62.30.+d	Mechanical and elastic waves; vibrations (see also 43.40.+s Structural acoustics and vibration; 46.40.−f Vibrations and mechanical waves in continuum mechanics of solids)
S	62.40.+i	Anelasticity, internal friction, stress relaxation, and mechanical resonances
M	62.40.+i	Anelasticity, internal friction, stress relaxation, and mechanical resonances (for materials treatment effects on anelasticity, see 81.40.Jj in materials science)
	... ... ...	Thermomechanical effects, see 65.40.De
	... ... ...	Magnetomechanical effects, see 75.80.+q
	... ... ...	Piezoelectric effects, see 77.65.−j
	... ... ...	Elastooptical effects, see 78.20.Hp
D	62.50.+p	High-pressure and shock wave effects in solids and liquids (for high pressure apparatus and techniques, see 07.35.+k; for shock wave initiated high−pressure chemistry, see 82.40.Fp; for high−pressure behavior of rocks and minerals, see 91.60.Gf; see also 47.40.Nm Shock wave interactions and shock effects in fluid dynamics) (Use 62.50.-p)
N	62.50.-p	High-pressure effects in solids and liquids (for high pressure apparatus and techniques, see 07.35.+k; for high-pressure behavior of rocks and minerals, see 91.60.Gf; for pressure treatments, see 81.40.Vw in materials science)
N	62.50.Ef	Shock wave effects in solids and liquids (for shock wave initiated high-pressure chemistry, see 82.40.Fp; see also 47.40.Nm Shock wave interactions and shock effects in fluid dynamics)
	62.60.+v	Acoustical properties of liquids (see also 43.35.+d in acoustics; 87.50.Y− Biological effects of acoustic and ultrasonic energy in biological and medical physics)
	... ... ...	Lattice dynamics, phonons, see section 63
	... ... ...	Sound waves in fluid dynamics, see 47.35.Rs
	... ... ...	Second sound in quantum fluids, see 67.25.dt
	62.65.+k	Acoustical properties of solids
	... ... ...	Magnetoacoustic effects, see 72.55.+s and 73.50.Rb
	... ... ...	Acoustoelectric effects, see 72.50.+b, 73.50.Rb, and 77.65.Dq
	... ... ...	Acoustooptical effects, see 78.20.Hp
	62.80.+f	Ultrasonic relaxation (see also 43.35.Fj Ultrasonic relaxation processes in liquids and solids—in Acoustics Appendix; for ultrasonic attenuation in superconductors, see 74.25.Ld)
	62.90.+k	Other topics in mechanical and acoustical properties of condensed matter (restricted to new topics in section 62)
S	63.	Lattice dynamics
M	63.	Lattice dynamics (see also 78.30.−j Infrared and Raman spectra; for surface and interface vibrations, see 68.35.Ja; for adsorbate vibrations, see 68.43.Pq; for lattice dynamics of quantum solids, see 67.80.de)
	63.10.+a	General theory
	63.20.-e	Phonons in crystal lattices (for phonons in superconductors, see 74.25.Kc; see also 43.35.Gk Phonons in crystal lattice, quantum acoustics—in Acoustics Appendix)
N	63.20.D-	Phonon states and bands, normal modes, and phonon dispersion
N	63.20.dd	Measurements
N	63.20.dh	Fitted theory
D	63.20.Dj	Phonon states and bands, normal modes, and phonon dispersion (Use 63.20.D-)
N	63.20.dk	First-principles theory
N	63.20.K-	Phonon interactions
N	63.20.kd	Phonon–electron interactions
N	63.20.kg	Phonon–phonon interactions
N	63.20.kk	Phonon interactions with other quasiparticles
N	63.20.kp	Phonon–defect interactions
D	63.20.Kr	Phonon–electron and phonon–phonon interactions (Use 63.20.K-)
D	63.20.Ls	Phonon interactions with other quasiparticles (Use 63.20.kk)
D	63.20.Mt	Phonon–defect interactions (Use 63.20.kp)
	63.20.Pw	Localized modes
	63.20.Ry	Anharmonic lattice modes
D	63.22.+m	Phonons or vibrational states in low-dimensional structures and nanoscale materials (Use 63.22.-m)
N	63.22.-m	Phonons or vibrational states in low-dimensional structures and nanoscale materials
N	63.22.Dc	Free films
N	63.22.Gh	Nanotubes and nanowires
N	63.22.Kn	Clusters and nanocrystals
N	63.22.Np	Layered systems
D	63.50.+x	Vibrational states in disordered systems (Use 63.50.-x)
N	63.50.-x	Vibrational states in disordered systems
N	63.50.Gh	Disordered crystalline alloys
N	63.50.Lm	Glasses and amorphous solids
	63.70.+h	Statistical mechanics of lattice vibrations and displacive phase transitions
	63.90.+t	Other topics in lattice dynamics (restricted to new topics in section 63)
	64.	Equations of state, phase equilibria, and phase transitions (see also 82.60.−s Chemical thermodynamics)
S	64.10.+h	General theory of equations of state and phase equilibria
M	64.10.+h	General theory of equations of state and phase equilibria (see also 05.70.Ce Thermodynamic functions and equations of state)
D	64.30.+t	Equations of state of specific substances (Use 64.30.-t)
N	64.30.-t	Equations of state of specific substances
N	64.30.Ef	Equations of state of pure metals and alloys
N	64.30.Jk	Equations of state of nonmetals
	64.60.-i	General studies of phase transitions (see also 63.70.+h Statistical mechanics of lattice vibrations and displacive phase transitions; for critical phenomena in solid surfaces and interfaces, and in magnetism, see 68.35.Rh, and 75.40.−s, respectively)
N	64.60.A-	Specific approaches applied to studies of phase transitions
N	64.60.ae	Renormalization-group theory
N	64.60.ah	Percolation
D	64.60.Ak	Renormalization-group, fractal, and percolation studies of phase transitions (see also 61.43.Hv Fractals; macroscopic aggregates) (Use 64.60.A-)
N	64.60.al	Fractal and multifractal systems (see also 61.43.Hv Fractals; macroscopic aggregates)
N	64.60.an	Finite-size systems
N	64.60.aq	Networks
N	64.60.at	Convolution
N	64.60.av	Cracks, sandpiles, avalanches, and earthquakes (for general studies of sandpiles and avalanches, see 45.70.Cc, Ht in classical mechanics of discrete systems; see also 91.30.Px Earthquakes in geophysics)
N	64.60.Bd	General theory of phase transitions
S	64.60.Cn	Order–disorder transformations; statistical mechanics of model systems
M	64.60.Cn	Order–disorder transformations (see also 81.30.Hd Constant-composition solid-solid phase transformations: polymorphic, massive, and order–disorder in materials science)
N	64.60.De	Statistical mechanics of model systems (Ising model, Potts model, field-theory models, Monte Carlo techniques, etc)
N	64.60.Ej	Studies/theory of phase transitions of specific substances
N	64.60.F-	Equilibrium properties near critical points, critical exponents
N	64.60.fd	General theory of critical region behavior
N	64.60.fh	Studies of specific substances in the critical region
	... ... ...	Properties of quantum fluids, see section 67
D	64.60.Fr	Equilibrium properties near critical points, critical exponents (Use 64.60.F-)
	64.60.Ht	Dynamic critical phenomena
	64.60.Kw	Multicritical points
	64.60.My	Metastable phases
N	64.60.Q-	Nucleation (see also 82.60.Nh Thermodynamics of nucleation in physical chemistry and chemical physics)
D	64.60.Qb	Nucleation (see also 82.60.Nh Thermodynamics of nucleation in physical chemistry and chemical physics) (Use 64.60.Q-)
N	64.60.qe	General theory and computer simulations of nucleation
N	64.60.qj	Studies of nucleation in specific substances
	64.70.-p	Specific phase transitions
N	64.70.D-	Solid–liquid transitions
N	64.70.dg	Crystallization of specific substances
N	64.70.dj	Melting of specific substances
N	64.70.dm	General theory of the solid-liquid transition
D	64.70.Dv	Solid–liquid transitions (Use 64.70.D-)
N	64.70.F-	Liquid–vapor transitions
N	64.70.fh	Boiling and bubble dynamics (for bubble formation, bubble dynamics, boiling and cavitation, see section 47.55.D-; for acoustic cavitation, see 43.35.Ei in Acoustics Appendix)
N	64.70.fm	Thermodynamics studies of evaporation and condensation (for evaporation and condensation on surfaces, see 68.03.Fg)
D	64.70.Fx	Liquid–vapor transitions (Use 64.70.F-)
	64.70.Hz	Solid–vapor transitions
	64.70.Ja	Liquid–liquid transitions
N	64.70.K-	Solid–solid transitions (see also 61.50.Ks Crystallographic aspects of phase transformations; pressure effects; 75.30.Kz and 77.80.Bh for magnetic and ferroelectric transitions, respectively; for material science aspects, see 81.30.−t)
D	64.70.Kb	Solid–solid transitions (see also 61.50.Ks Crystallographic aspects of phase transformations; pressure effects; 75.30.Kz and 77.80.Bh for magnetic and ferroelectric transitions, respectively; for material science aspects, see 81.30.−t) (Use 64.70.K-)
N	64.70.kd	Metals and alloys
N	64.70.kg	Semiconductors
N	64.70.kj	Glasses
N	64.70.km	Polymers
N	64.70.kp	Ionic crystals
N	64.70.kt	Molecular crystals
N	64.70.M-	Transitions in liquid crystals
D	64.70.Md	Transitions in liquid crystals (Use 64.70.M-)
N	64.70.mf	Theory and modeling of specific liquid crystal transitions, including computer simulation
N	64.70.mj	Experimental studies of liquid crystal transitions
	64.70.Nd	Structural transitions in nanoscale materials
N	64.70.P-	Glass transitions of specific systems
N	64.70.pe	Metallic glasses
D	64.70.Pf	Glass transitions (Use 64.70.P- and 64.70.Q-)
N	64.70.ph	Nonmetallic glasses (silicates, oxides, selenides, etc)
N	64.70.pj	Polymers
N	64.70.pm	Liquids
N	64.70.pp	Liquid crystals (see also 64.70.M− Transitions in liquid crystals)
N	64.70.ps	Granules
N	64.70.pv	Colloids
N	64.70.Q-	Theory and modeling of the glass transition
N	64.70.qd	Thermodynamics and statistical mechanics
N	64.70.qj	Dynamics and criticality
	64.70.Rh	Commensurate–incommensurate transitions
N	64.70.Tg	Quantum phase transitions (for quantum Hall effects aspects, see 73.43.Nq in electronic structure of surfaces, interfaces, thin films, and low dimensional structures)
D	64.75.+g	Solubility, segregation, and mixing; phase separation (see also 82.60.Lf Thermodynamics of solutions; 47.51.+a Mixing in fluid dynamics) (Use 64.75.-g)
N	64.75.-g	Phase equilibria (see also 82.60.Lf Thermodynamics of solutions; 47.51.+a Mixing in fluid dynamics; for properties of solutions of biomolecules, see 87.15.N− in biological physics)
N	64.75.Bc	Solubility
N	64.75.Cd	Phase equilibria of fluid mixtures, including gases, hydrates, etc.
N	64.75.Ef	Mixing
N	64.75.Gh	Phase separation and segregation in model systems (hard spheres, Lennard-Jones, etc.)
N	64.75.Jk	Phase separation and segregation in nanoscale systems (for general nanoscale materials studies, see 81.07.−b in materials science)
N	64.75.Lm	Phase separation and segregation in oxidation (for general surface oxidation studies in surface treatments, see 81.65.Mq)
N	64.75.Nx	Phase separation and segregation in solid solutions
N	64.75.Op	Phase separation and segregation in alloying
N	64.75.Qr	Phase separation and segregation in semiconductors
N	64.75.St	Phase separation and segregation in thin films
N	64.75.Va	Phase separation and segregation in polymer blends/polymeric solutions
N	64.75.Xc	Phase separation and segregation in colloidal systems
N	64.75.Yz	Self-assembly
	64.90.+b	Other topics in equations of state, phase equilibria, and phase transitions (restricted to new topics in section 64)
S	65.	Thermal properties of condensed matter
M	65.	Thermal properties of condensed matter (see also section 44 Heat transfer; for thermodynamic properties of quantum fluids and solids, see section 67; for thermal properties of thin films, see 68.60.Dv; for nonelectronic thermal conduction, see 66.25.+g and 66.70.−f; for thermal properties of rocks and minerals, see 91.60.Ki; for thermodynamic properties of superconductors, see 74.25.Bt; see also 87.19.Pp Biothermics and thermal processes in biological physics)
D	65.20.+w	Thermal properties of liquids: heat capacity, thermal expansion, etc. (Use 65.20.-w)
N	65.20.-w	Thermal properties of liquids
N	65.20.De	General theory of thermodynamic properties of liquids, including computer simulation
N	65.20.Jk	Studies of thermodynamic properties of specific liquids
	65.40.-b	Thermal properties of crystalline solids (for specific heat of superconductors, see 74.25.Bt; for specific heat of magnetic systems, see 75.40.Cx)
	65.40.Ba	Heat capacity
	65.40.De	Thermal expansion; thermomechanical effects
N	65.40.G-	Other thermodynamical quantities (for magnetocaloric effect, see 75.30.Sg; for properties of dielectrics, ferroelectrics, and piezoelectrics, see section 77)
N	65.40.gd	Entropy
N	65.40.gh	Work functions
N	65.40.gk	Electrochemical properties (for general electrochemistry, see 82.45.−h)
N	65.40.gp	Surface energy (see also 68.35.Md Surface thermodynamics, surface energies in surfaces and interfaces)
D	65.40.Gr	Entropy and other thermodynamical quantities (Use 65.40.G-)
	65.60.+a	Thermal properties of amorphous solids and glasses: heat capacity, thermal expansion, etc.
	65.80.+n	Thermal properties of small particles, nanocrystals, and nanotubes (see also 82.60.Qr Thermodynamics of nanoparticles in physical chemistry and chemical physics)
	65.90.+i	Other topics in thermal properties of condensed matter (restricted to new topics in section 65)
S	66.	Transport properties of condensed matter (nonelectronic)
M	66.	Nonelectronic transport properties of condensed matter
	66.10.-x	Diffusion and ionic conduction in liquids
N	66.10.C-	Diffusion and thermal diffusion (for osmosis in biological systems, see 82.39.Wj in physical chemistry; for cellular transport, see 87.16.dp and 87.16.Uv in biological physics)
D	66.10.Cb	Diffusion and thermal diffusion (for osmosis in biological systems, see 82.39.Wj in physical chemistry) (Use 66.10.C-)
N	66.10.cd	Thermal diffusion and diffusive energy transport
N	66.10.cg	Mass diffusion, including self-diffusion, mutual diffusion, tracer diffusion, etc.
	66.10.Ed	Ionic conduction
D	66.20.+d	Viscosity of liquids; diffusive momentum transport (Use 66.20.-d)
N	66.20.-d	Viscosity of liquids; diffusive momentum transport
N	66.20.Cy	Theory and modeling of viscosity and rheological properties, including computer simulation
N	66.20.Ej	Studies of viscosity and rheological properties of specific liquids
N	66.20.Gd	Diffusive momentum transport
N	66.25.+g	Thermal conduction in nonmetallic liquids (for thermal conduction in liquid metals, see 72.15.Cz)
	66.30.-h	Diffusion in solids (for surface and interface diffusion, see 68.35.Fx)
	66.30.Dn	Theory of diffusion and ionic conduction in solids
	66.30.Fq	Self-diffusion in metals, semimetals, and alloys
N	66.30.H-	Self-diffusion and ionic conduction in nonmetals
N	66.30.hd	Ionic crystals
N	66.30.hh	Glasses
N	66.30.hk	Polymers
N	66.30.hp	Molecular crystals
D	66.30.Hs	Self-diffusion and ionic conduction in nonmetals (Use 66.30.H-)
N	66.30.J-	Diffusion of impurities (for surface diffusion, hopping, sorption, etc., see 68.35.Fx; see section 72 for carrier diffusion and electron-hole diffusion)
N	66.30.je	Diffusion of gases
N	66.30.jj	Diffusion of water
N	66.30.jp	Proton diffusion
D	66.30.Jt	Diffusion of impurities (Use 66.30.J-)
	66.30.Lw	Diffusion of other defects
N	66.30.Ma	Diffusion in quantum solids (supersolidity) (see also 67.80.dj Defects, impurities, and diffusion in quantum fluids and solids)
	66.30.Ny	Chemical interdiffusion; diffusion barriers
	66.30.Pa	Diffusion in nanoscale solids
	66.30.Qa	Electromigration
	66.30.Xj	Thermal diffusivity
	66.35.+a	Quantum tunneling of defects
D	66.60.+a	Thermal conduction in nonmetallic liquids (for thermal conduction in liquid metals, see 72.15.Cz) (Use 66.25.+g)
D	66.70.+f	Nonelectronic thermal conduction and heat-pulse propagation in solids; thermal waves (for thermal conduction in metals and alloys, see 72.15.Cz and 72.15.Eb) (Use 66.70.-f)
N	66.70.-f	Nonelectronic thermal conduction and heat-pulse propagation in solids; thermal waves (for electronic thermal conduction in metals and alloys, see 72.15.Cz and 72.15.Eb)
N	66.70.Df	Metals, alloys, and semiconductors
N	66.70.Hk	Glasses and polymers
N	66.70.Lm	Other systems such as ionic crystals, molecular crystals, nanotubes, etc.
	66.90.+r	Other topics in nonelectronic transport properties of condensed matter (restricted to new topics in section 66)
S	67.	Quantum fluids and solids; liquid and solid helium
M	67.	Quantum fluids and solids (see also 05.30.−d Quantum statistical mechanics; for cryogenics, refrigerators, low-temperature detectors, and other low-temperature equipment, see 07.20.Mc; see also 47.37.+q Hydrodynamic aspects of superfluidity; quantum fluids—in fluid dynamics)
N	67.10.-j	Quantum fluids: general properties
N	67.10.Ba	Boson degeneracy (for ultracold, trapped gases, see 67.85.−d)
N	67.10.Db	Fermion degeneracy
N	67.10.Fj	Quantum statistical theory
N	67.10.Hk	Quantum effects on the structure and dynamics of non-degenerate fluids
N	67.10.Jn	Transport properties and hydrodynamics
D	67.20.+k	Quantum effects on the structure and dynamics of nondegenerate fluids (e.g., normal phase liquid 4He) (Use 67.10.Hk)
N	67.25.-k	4He
N	67.25.B-	Normal phase of 4He
N	67.25.bd	Thermodynamic properties
N	67.25.bf	Transport, hydrodynamics
N	67.25.bh	Films and restricted geometries
N	67.25.D-	Superfluid phase
N	67.25.de	Thermodynamic properties
N	67.25.dg	Transport, hydrodynamics, and superflow
N	67.25.dj	Superfluid transition and critical phenomena
N	67.25.dk	Vortices and turbulence
N	67.25.dm	Two-fluid model; phenomenology
N	67.25.dp	Films
N	67.25.dr	Restricted geometries
N	67.25.dt	Sound and excitations
N	67.25.du	Relaxation phenomena
N	67.25.dw	Superfluidity in small clusters
N	67.30.-n	3He
N	67.30.E-	Normal phase of 3He
N	67.30.ef	Thermodynamics
N	67.30.eh	Transport and hydrodynamics
N	67.30.ej	Films and restricted geometries
N	67.30.em	Excitations
N	67.30.ep	Spin polarized 3He
N	67.30.er	Magnetic properties, NMR
N	67.30.H-	Superfluid phase of 3He
N	67.30.hb	Transport, hydrodynamics, and superflow
N	67.30.he	Textures and vortices
N	67.30.hj	Spin dynamics
N	67.30.hm	Impurities
N	67.30.hp	Interfaces
N	67.30.hr	Films
N	67.30.ht	Restricted geometries
D	67.40.-w	Boson degeneracy and superfluidity of 4He (Use 67.25.D-)
D	67.40.Bz	Phenomenology and two-fluid models (Use 67.25.dm)
D	67.40.Db	Quantum statistical theory; ground state, elementary excitations (Use 67.10.Fj)
D	67.40.Fd	Dynamics of relaxation phenomena (Use 67.25.du)
D	67.40.Hf	Hydrodynamics in specific geometries, flow in narrow channels (Use 67.25.dg and 67.25.dr)
D	67.40.Jg	Ions in liquid 4He (Use 67.25.D-)
D	67.40.Kh	Thermodynamic properties (Use 67.25.de)
D	67.40.Mj	First sound (Use 67.25.dt)
D	67.40.Pm	Transport processes, second and other sounds, and thermal counterflow; Kapitza resistance (Use 67.25.dg and 67.25.dt)
D	67.40.Rp	Films and weak link transport (Use 67.25.dp)
D	67.40.Vs	Vortices and turbulence (Use 67.25.dk)
D	67.40.Yv	Impurities and other defects (Use 67.25.D-)
D	67.55.-s	Normal phase of liquid 3He (Use 67.30.E-)
D	67.55.Cx	Thermodynamic properties (Use 67.30.ef)
D	67.55.Fa	Hydrodynamics (Use 67.30.eh)
D	67.55.Hc	Transport properties (Use 67.30.eh)
D	67.55.Ig	Ions in normal liquid 3He (Use 67.30.E-)
D	67.55.Jd	Collective modes (Use 67.30.em)
D	67.55.Lf	Impurities (Use 67.30.E-)
D	67.57.-z	Superfluid phase of liquid 3He (Use 67.30.H-)
D	67.57.Bc	Thermodynamic properties (Use 67.30.H-)
D	67.57.De	Superflow and hydrodynamics (Use 67.30.hb)
D	67.57.Fg	Textures and vortices (Use 67.30.he)
D	67.57.Gh	Ions in superfluid 3He (Use 67.30.H-)
D	67.57.Hi	Transport properties (Use 67.30.hb)
D	67.57.Jj	Collective modes (Use 67.30.H-)
D	67.57.Lm	Spin dynamics (Use 67.30.hj)
D	67.57.Np	Behavior near interfaces (Use 67.30.hp)
D	67.57.Pq	Impurities (Use 67.30.hm)
S	67.60.-g	Mixed systems; liquid 3He, 4He mixtures
M	67.60.-g	Mixtures of 3He and 4He
N	67.60.Bc	Boson mixtures
D	67.60.Dm	He I—;3He (Use 67.60.Bc)
S	67.60.Fp	He II–3He
M	67.60.Fp	Bose-Fermi mixtures
N	67.60.G-	Solutions of 3He in liquid 4He
N	67.60.gc	Spin polarized solutions
N	67.60.gf	Films
N	67.60.gj	Restricted geometries
D	67.60.Hr	Dilute superfluid 3He in He II (Use 67.60.G-)
D	67.60.Js	Ions in liquid 3He—;4He mixtures (Use 67.60.-g)
N	67.63.-r	Hydrogen and isotopes
N	67.63.Cd	Molecular hydrogen and isotopes
N	67.63.Gh	Atomic hydrogen and isotopes
D	67.65.+z	Spin-polarized hydrogen and helium (Use 67.25.bh)
D	67.70.+n	Films (including physical adsorption) (Use 67.25.bh)
S	67.80.-s	Solid helium and related quantum crystals
M	67.80.-s	Quantum solids
N	67.80.B-	Solid 4He
N	67.80.bd	Superfluidity in solid 4He, supersolid 4He
N	67.80.bf	Liquid-solid interfaces; growth kinetics
D	67.80.Cx	Structure, lattice dynamics, and sound propagation (Use 67.80.-s)
N	67.80.D-	Solid 3He
N	67.80.de	Structure, lattice dynamics and sound
N	67.80.dj	Defects, impurities, and diffusion
N	67.80.dk	Magnetic properties, phases, and NMR
N	67.80.dm	Films
N	67.80.F-	Solids of hydrogen and isotopes
N	67.80.ff	Molecular hydrogen and isotopes
N	67.80.fh	Atomic hydrogen and isotopes
D	67.80.Gb	Thermal properties (Use 67.80.-s)
D	67.80.Jd	Magnetic properties and nuclear magnetic resonance (Use 67.80.-s)
N	67.80.K-	Other supersolids
N	67.80.kb	Supersolid phases on lattices
D	67.80.Mg	Defects, impurities, and diffusion (Use 67.80.-s)
N	67.85.-d	Ultracold gases, trapped gases (see also 03.75.−b Matter waves in quantum mechanics)
N	67.85.Bc	Static properties of condensates
N	67.85.De	Dynamic properties of condensates; excitations, and superfluid flow
N	67.85.Fg	Multicomponent condensates; spinor condensates
N	67.85.Hj	Bose–Einstein condensates in optical potentials
N	67.85.Jk	Other Bose–Einstein condensation phenomena
N	67.85.Lm	Degenerate Fermi gases
N	67.85.Pq	Mixtures of Bose and Fermi gases
S	67.90.+z	Other topics in quantum fluids and solids; liquid and solid helium (restricted to new topics in section 67)
M	67.90.+z	Other topics in quantum fluids and solids (restricted to new topics in section 67)
S	68.	Surfaces and interfaces; thin films and low-dimensional systems (structure and nonelectronic properties)
M	68.	Surfaces and interfaces; thin films and nanosystems (structure and nonelectronic properties) (for surface and interface chemistry, see 82.65.+r, for surface magnetism, see 75.70.Rf)
	68.03.-g	Gas-liquid and vacuum-liquid interfaces
	68.03.Cd	Surface tension and related phenomena
S	68.03.Fg	Evaporation and condensation
M	68.03.Fg	Evaporation and condensation of liquids
S	68.03.Hj	Structure: measurements and simulations
M	68.03.Hj	Liquid surface structure: measurements and simulations
	68.03.Kn	Dynamics (capillary waves)
	68.05.-n	Liquid-liquid interfaces
S	68.05.Cf	Structure: measurements and simulations
M	68.05.Cf	Liquid-liquid interface structure: measurements and simulations
	68.05.Gh	Interfacial properties of microemulsions
	68.08.-p	Liquid-solid interfaces
	68.08.Bc	Wetting
S	68.08.De	Structure: measurements and simulations
M	68.08.De	Liquid-solid interface structure: measurements and simulations (for crystal growth from solutions and melts, see 81.10.Dn, Fq in materials science)
	68.15.+e	Liquid thin films
	68.18.-g	Langmuir-Blodgett films on liquids (for L-B films on solids, see 68.47.Pe)
S	68.18.Fg	Structure: measurements and simulations
M	68.18.Fg	Liquid thin film structure: measurements and simulations
S	68.18.Jk	Phase transitions
M	68.18.Jk	Phase transitions in liquid thin films
S	68.35.-p	Solid surfaces and solid–solid interfaces: Structure and energetics
M	68.35.-p	Solid surfaces and solid–solid interfaces: structure and energetics
	68.35.Af	Atomic scale friction
N	68.35.B-	Structure of clean surfaces (and surface reconstruction)
N	68.35.bd	Metals and alloys
N	68.35.bg	Semiconductors
N	68.35.bj	Amorphous semiconductors, glasses
N	68.35.bm	Polymers, organics
N	68.35.bp	Fullerenes
D	68.35.Bs	Structure of clean surfaces (reconstruction) (Use 68.35.B-)
N	68.35.bt	Other materials
	68.35.Ct	Interface structure and roughness
	68.35.Dv	Composition, segregation; defects and impurities
	68.35.Fx	Diffusion; interface formation (see also 66.30.−h Diffusion in solids, for diffusion of adsorbates, see 68.43.Jk)
	68.35.Gy	Mechanical properties; surface strains
	68.35.Iv	Acoustical properties
	68.35.Ja	Surface and interface dynamics and vibrations
	... ... ...	Solid-solid interfaces: transport and optical properties, see 73.40.−c and 78.20.−e respectively
S	68.35.Md	Surface thermodynamics, surface energies
M	68.35.Md	Surface thermodynamics, surface energies (see also 05.70.Np Interface and surface thermodynamics in statistical physics, thermodynamics and nonlinear dynamical systems; 65.40.gp Surface energy in thermal properties of condensed matter)
S	68.35.Np	Adhesion
M	68.35.Np	Adhesion (for polymer adhesion, see 82.35.Gh: for cell adhesion, see 87.17.Rt in biological physics)
	68.35.Rh	Phase transitions and critical phenomena
	68.37.-d	Microscopy of surfaces, interfaces, and thin films
	68.37.Ef	Scanning tunneling microscopy (including chemistry induced with STM)
	68.37.Hk	Scanning electron microscopy (SEM) (including EBIC)
S	68.37.Lp	Transmission electron microscopy (TEM) (including STEM, HRTEM, etc.)
M	68.37.Lp	Transmission electron microscopy (TEM)
N	68.37.Ma	Scanning transmission electron microscopy (STEM)
	68.37.Nq	Low energy electron microscopy (LEEM)
N	68.37.Og	High-resolution transmission electron microscopy (HRTEM)
	68.37.Ps	Atomic force microscopy (AFM)
	68.37.Rt	Magnetic force microscopy (MFM)
	68.37.Tj	Acoustic force microscopy
	68.37.Uv	Near-field scanning microscopy and spectroscopy
	68.37.Vj	Field emission and field-ion microscopy
	68.37.Xy	Scanning Auger microscopy, photoelectron microscopy
	68.37.Yz	X-ray microscopy
	68.43.-h	Chemisorption/physisorption: adsorbates on surfaces
	68.43.Bc	Ab initio calculations of adsorbate structure and reactions (for electronic structure of adsorbates, see 73.20.Hb; for adsorbate reactions, see also 82.65.+r Surface and interface chemistry; heterogeneous catalysis at surfaces)
	68.43.De	Statistical mechanics of adsorbates
	68.43.Fg	Adsorbate structure (binding sites, geometry)
	68.43.Hn	Structure of assemblies of adsorbates (two- and three-dimensional clustering)
	68.43.Jk	Diffusion of adsorbates, kinetics of coarsening and aggregation
S	68.43.Mn	Adsorption/desorption kinetics
M	68.43.Mn	Adsorption kinetics
N	68.43.Nr	Desorption kinetics
	68.43.Pq	Adsorbate vibrations
	68.43.Rs	Electron stimulated desorption
	68.43.Tj	Photon stimulated desorption
	68.43.Vx	Thermal desorption
	68.47.-b	Solid–gas/vacuum interfaces: types of surfaces
	68.47.De	Metallic surfaces
	68.47.Fg	Semiconductor surfaces
	68.47.Gh	Oxide surfaces
	68.47.Jn	Clusters on oxide surfaces
	68.47.Mn	Polymer surfaces
	68.47.Pe	Langmuir–Blodgett films on solids; polymers on surfaces; biological molecules on surfaces
S	68.49.-h	Surface characterization by particle–surface scattering
M	68.49.-h	Surface characterization by particle-surface scattering (see also 34.35.+a Interactions of atoms and molecules with surfaces)
	68.49.Bc	Atom scattering from surfaces (diffraction and energy transfer)
	68.49.Df	Molecule scattering from surfaces (energy transfer, resonances, trapping)
D	68.49.Fg	Cluster scattering from surfaces (Use 68.49.-h)
	68.49.Jk	Electron scattering from surfaces
	68.49.Sf	Ion scattering from surfaces (charge transfer, sputtering, SIMS)
	68.49.Uv	X-ray standing waves
	... ... ...	Surface and interface electron states, see 73.20.−r
	... ... ...	Vibrational spectroscopy (IR, Raman, ATR), see 78.30.−j
	... ... ...	Electron spectroscopy (EELS, Auger, metastable quenching spectroscopy) see 79.20.−m
	... ... ...	Photoelectron spectroscopy (XPS and UPS), see 79.60.−i
	... ... ...	Nonlinear spectroscopy (second harmonic, sum frequency generation, etc.), see 42.65.Ky
	... ... ...	Electron diffraction and scattering, see 61.05.J−
	... ... ...	Surface enhanced spectroscopy, plasmons, see 73.20.Mf
	... ... ...	Near-field scanning microscopy and spectroscopy, see 68.37.Uv
	68.55.-a	Thin film structure and morphology (for methods of thin film deposition, film growth and epitaxy, see 81.15.−z)
N	68.55.A-	Nucleation and growth
D	68.55.Ac	Nucleation and growth: microscopic aspects (Use 68.55.A-)
N	68.55.ag	Semiconductors
N	68.55.aj	Insulators
N	68.55.am	Polymers and organics
N	68.55.ap	Fullerenes
N	68.55.at	Other materials
N	68.55.J-	Morphology of films
N	68.55.jd	Thickness
D	68.55.Jk	Structure and morphology; thickness; crystalline orientation and texture (Use 68.55.-a)
N	68.55.jm	Texture
S	68.55.Ln	Defects and impurities: doping, implantation, distribution, concentration, etc.
M	68.55.Ln	Defects and impurities: doping, implantation, distribution, concentration, etc. (for diffusion of impurities, see 66.30.J−)
	68.55.Nq	Composition and phase identification
	68.60.-p	Physical properties of thin films, nonelectronic
	68.60.Bs	Mechanical and acoustical properties
	68.60.Dv	Thermal stability; thermal effects
	68.60.Wm	Other nonelectronic physical properties
S	68.65.-k	Low-dimensional, mesoscopic, and nanoscale systems: structure and nonelectronic properties
M	68.65.-k	Low-dimensional, mesoscopic, and nanoscale systems: structure and nonelectronic properties (for structure of nanoscale materials, see 61.46.−w; for magnetic properties of interfaces, see 75.70.Cn; for superconducting properties, see 74.78.−w; for optical properties, see 78.67.−n; for transport properties, see 73.63.−b; for thermal properties of nanocrystals and nanotubes, see 65.80.+n; for mechanical properties of nanoscale systems, see 62.25.−g)
	... ... ...	Growth of low-dimensional structures, see 81.16.−c
	68.65.Ac	Multilayers
	68.65.Cd	Superlattices
	68.65.Fg	Quantum wells
S	68.65.Hb	Quantum dots
M	68.65.Hb	Quantum dots (patterned in quantum wells)
S	68.65.La	Quantum wires
M	68.65.La	Quantum wires (patterned in quantum wells)
	68.70.+w	Whiskers and dendrites (growth, structure, and nonelectronic properties)
	68.90.+g	Other topics in structure, and nonelectronic properties of surfaces and interfaces; thin films and low-dimensional structures (restricted to new topics in section 68)