The following sections have been revised in category 80  Interdisciplinary Physics and Related Areas of Science and Technology

N - new (red);  M - modified (blue)--- [2001 text for modified codes in green]; D - deleted (purple).
 

81.70.-q   Methods of materials testing and analysis (for specific chemical analysis methods, see 82.80)

81.70.Bt   Mechanical testing, impact tests, static and dynamic loads

81.70.Cv   Nondestructive testing: ultrasonic testing, photoacoustic testing

81.70.Ex   Nondestructive testing: electromagnetic testing, eddy-current testing

81.70.Fy   Nondestructive testing: optical methods

81.70.Ha   Testing in microgravity environments

81.70.Jb   Chemical composition analysis, chemical depth and dopant profiling

81.70.Pg   Thermal analysis, differential thermal analysis (DTA), differential thermogravimetric analysis

N  81.70.Tx  Computed tomography
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82.45.-h Electrochemistry and electrophoresis

N 82.45.Aa   Electrochemical synthesis (see also 81.16.Be Chemical synthesis methods in nanofabrication and 81.20.Ka Chemical synthesis; combustion synthesis in materials synthesis)

N 82.45.Bb Corrosion and passivation (see also 81.65.Kn Corrosion protection and 81.65.Rv Passivation in surface treatments)

N 82.45.Cc Anodic films

M 82.45Fk Electrodes --- [Original text:  Electrode kinetics]

N 82.45.Gj Electrolytes (for polyelectrolytes, see also 82.35.Rs and 82.45.Wx; see also 66.30.Hs Self-diffusion and ionic conduction in nonmetals)

N 82.45.Hk Electrolysis

M  82.45.Jn  Surface structure, reactivity, catalysis [Original text: same] ( see also 82.65.+r Surface and interface chemistry; heterogeneous catalysis at surfaces)

M 82.45.Mp Thin layers, films, monolayers, membranes (for anodic films, see 82.45.Cc; for surface double layers, see 73.30.+y) --- [Original text:  Thin layers, films, monolayers]
 

M 82.45.Qr Electrodeposition and electrodissolution (see also 81.15.Pq Electrodeposition, electroplating) --- [Original text:  Electrodeposition and electrodissolution (see also 81.15.Pq in methods  of deposition of films and coatings in materials science)]

N 82.45.Rr Electroanalytical chemistry (see also 82.80.Fk in chemical analysis and related physical methods of analysis)

M  82.45.Tv   Bioelectrochemistry [Original text: same] (see also 82.39.-k Chemical kinetics in biological systems)

N 82.45.Un Dielectric materials in electrochemistry (see also 77.84.-s Dielectric, piezoelectric, ferroelectric, and antiferroelectric materials)

N 82.45.Vp Semiconductor materials in electrochemistry(see also 81.05.Cy, Dz, Ea, Gc, Hd in specific materials)

N 82.45.Wx Polymers and organic materials in electrochemistry (see also 82.35.-x Polymers: properties; reactions; polymerization)

N 82.45.Xy Ceramics in electrochemistry (see also 81.05.Je, Mh in specific materials)

N 82.45.Yz Nanostructured materials in electrochemistry (for nanofabrication, see 81.16.-c)
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N 82.47.-a Applied electrochemistry

N 82.47.Aa Lithium-ion batteries

N 82.47.Cb Lead-acid, nickel-metal hydride and other batteries (for lithium-ion batteries, see 82.47.Aa)

N 82.47.Ed Solid-oxide fuel cells (SOFC)

N 82.47.Gh Proton exchange membrane (PEM) fuel cells

N 82.47.Jk Photoelectrochemical cells, photoelectrochromic and other hybrid electrochemical energy storage devices (see also 84.60.Jt Photoelectric conversion, solar cells and arrays)

N 82.47.Lh Molten-carbonate fuel cells (MCFC)

N 82.47.Nj Polymer-electrolyte fuel cells (PEFC)

N 82.47.Pm Phosphoric-acid fuel cells (PAFC); other fuel cells

N 82.47.Rs Electrochemical sensors

N 82.47.Tp Electrochemical displays

N 82.47.Uv Electrochemical capacitors; supercapacitors (for capacitor banks, see 84.60.Ve)

N 82.47.Wx Electrochemical engineering
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M  84.60.-h       Direct energy conversion and storage (see also 89.30.-g Energy resources; for electrochemical conversion, see 82.47.-a) --- [Original text:  Direct energy conversion and storage (see also 89.30.-g Energy resources)]
 

84.60.Bk     Performance characteristics of energy conversion systems; figure of merit

D 84.60.Dn  Electrochemical conversion and storage: electrochemical cells and batteries; fuel cells

84.60.Jt       Photoelectric conversion: solar cells and arrays (for solar collectors and concentrators, see 42.79.Ek)

84.60.Lw     Magnetohydrodynamic conversion (for MHD generators, see 52.75.Fk—in plasma physics)

84.60.Ny     Thermionic conversion (for thermionic generators, see 52.75.Fk—in plasma physics)

84.60.Rb     Thermoelectric, electrogasdynamic and other direct energy conversion

84.60.Ve     Energy storage systems, including capacitor banks
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M 84.70.+p High-current and high-voltage technology: power systems; power transmission lines and cables (for superconducting cables, see 84.71.Fk) --- [Original text:  High-current and high-voltage technology: power systems; power transmission lines and cables (including superconducting cables)]
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N 84.71.-b Superconducting high-power technology

N 84.71.Ba Superconducting magnets; magnetic levitation devices

N 84.71.Fk Superconducting cables

N 84.71.Mn Superconducting wires, fibers, and tapes (for superconducting wire networks, see 74.81.Fa)
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85.25.-j Superconducting devices

85.25.Am Superconducting device characterization, design, and modeling

85.25.Cp Josephson devices

85.25.Dq Superconducting quantum interference devices (SQUIDs)

M 85.25.Hv Superconducting logic elements and memory devices; microelectronic circuits --- [Original text:  Superconducting logic elements and memory devices]

D 85.25.Kx Superconducting wires, fibers, and tapes

D 85.25.Ly Superconducting magnets; magnetic levitation devices (for superconducting cables, see 84.70)

D 85.25.Na Superconducting microelectronic circuits

85.25.Oj Superconducting optical, x-ray, and gamma-ray detectors (SIS, NIS, transition edge)

85.25.Pb Superconducting infrared, submillimeter and millimeter wave detectors

85.25.Qc Superconducting surface acoustic wave devices and other superconducting devices
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M  85.75.-d Magnetoelectronics; spintronics:  devices exploiting spin polarized  transport or integrated magnetic fields --- [Original text:  Magnetoelectronics: devices exploiting spin polarized  transport or integrated magnetic fields]

85.75.Bb   Magnetic memory using giant magnetoresistance

85.75.Dd   Magnetic memory using magnetic tunnel junctions

85.75.Ff    Reprogrammable magnetic logic

85.75.Hh   Spin polarized field effect transistors

85.75.Mm  Spin polarized resonant tunnel junctions

85.75.Nn   Hybrid Hall devices

85.75.Ss    Magnetic field sensors using spin polarized transport
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M 85.80.-b  Thermoelectromagnetic and other devices (for acoustoelectric devices, see 43.38.-p in acoustics appendix; for electrochemical devices, see 82.47.-a) --- [Original text:  Electrochemical, thermoelectromagnetic, and other devices (for acoustoelectric devices, see 43.38.-p—in acoustics appendix)]

D 85.80.Dg  Electrochemical devices

85.80.Fi       Thermoelectric devices

85.80.Jm     Magnetoelectric devices

85.80.Lp     Magnetothermal devices
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87.16.-b   Subcellular structure and processes

87.16.Ac   Theory and modeling; computer simulation

87.16.Dg   Membranes, bilayers, and vesicles

87.16.Gj   Cell walls

87.16Ka   Filaments, microtubules, their networks, and supramolecular assemblies

M  87.16.Nn   Motor proteins  (myosin, kinesin dynein) [Original text: Motor proteins]

87.16.Qp   Pseudopods, lamellipods, cilia, and flagella

87.16.Sr   Chromosomes, histones

87.16.Tb   Organelles

87.16.Uv   Active transport processes; ion channels

87.16.Xa   Signal transduction

87.16.Yc   Regulatory chemical networks
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87.54.-n   Non-ionizing radiation therapy physics

87.54.Br   Thermotherapy (hyperthermia and cryogenic therapy)

87.54.Dt   Electrotherapy

87.54.Fj    Photodynamic therapy

N  87.54.Hk  Sound and ultrasound therapy/lithotripsy
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87.57.-s     Medical imaging: general

87.57.Ce    Image quality: contrast, resolution, noise, etc.

87.57.Gg    Image reconstruction and registration

87.57.Nk    Image analysis

N  87.57.Ra  Computer-aided diagnosis
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87.64.-t   Spectroscopic and microscopic techniques in biophysics and medical physics (for spectrometers, see 07 Instruments, apparatus, and components common to several branches of physics and astronomy)

87.64.Aa   Computer simulation

87.64.Bx   Electron, neutron and x-ray diffraction and scattering

87.64.Cc   Scattering of visible, uv, and infrared radiation

87.64.Dz   Scanning tunneling and atomic force microscopy

87.64.Ee   Electron microscopy

87.64.Fb   EXAFS spectroscopy

N  87.64.Gb  X-ray spectroscopy (for EXAFS spectroscopy, see 87.64.Fb)

87.64.Hd   EPR and NMR spectroscopy

87.64.Je   Infrared and Raman spectroscopy

87.64.Lg   Electron and photoelectron spectroscopy

87.64.Ni   Optical absorption, magnetic circular dichroism, and fluorescence spectroscopy

87.64.Pj   Mössbauer spectroscopy

87.64.Rr    Light microscopy: bright-field, dark- field, phase contrast, DIC

87.64.Tt   Confocal microscopy

87.64.Vv   Multiphoton microscopy

87.64.Xx   Near-field scanning optical microscopy
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N  87.83.+a  Biomedical applications of nanotechnology
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D  89.40.+k Transportation

N  89.40.-a  Transportation

N  89.40.Bb  Land transportation

N  89.40.Cc  Water transportation

N  89.40.Dd  Air transporation
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M  89.65.-s   Social and economic systems --- [Original text:  Social systems]

89.65.Cd  Demographic studies

89.65.Ef    Social organizations; anthropology

M  89.65.Gh   Economics; econophysics, financial markets, business and management --- [Original text:  Economics, business, and financial markets]

89.65.Lm   Urban planning and construction

M  89.70.+c  Information theory and communication theory (for telecommunications, see 84.40.Ua; for optical communications, see 42.79.Sz) --- [Original text:  Information science]

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