1 – Fundamental Constants and universality tests

• Fine structure constant

• Rydberg constant, proton radius, Newton constant of gravitation

• Fundamental consistency tests

• Other

2 – Redefinition of the International System of Units (SI)

Intended as a special session on the new SI in general, accessible to non-specialists of the respective units.

• The “New SI” (all fields)

• «Mises en pratique», implementation guidelines for the new definitions

• Other

3 – Primary realisation of the kilogram in the new SI

• Kibble balance

• Silicon crystal

• Other

4 – Time and frequency

• Microwave and optical clocks

• Stable RF and optical oscillators

• Time scales and synchronization

• Atom interferometry

• Other

5 – Quantum electrical standards I

• Josephson voltage standards

• Single-electron transport (SET) and quantum current standards

• SQUID & cryogenic current comparators (CCC)

• Other

6 – Quantum electrical standards II

• Quantum Hall resistance standards

• Graphene based standards

• Quantum impedance standards

• Other

7 – Photonics and optical metrology

Intended to open the conference to a wider range of optical and radiometric measurements and applications in research, industry, environment, etc.

• Optical fibers

• Laser sources and integrated systems

• Single photon detection and measurements

• Radiometric standards at the few photon level

• THz metrology

• Other

8 – Novel Sensors and Measurements

These subtopics may be particularly suited to special sessions.

• Electrical measurements for small mass and force metrology

• Electrical and magnetic measurements at nanometric scales

• New quantum sensors

• Other

9 – Current

• DC current

• AC current

• AC-DC current difference

• Other

10 – Voltage

• DC voltage

• AC voltage

• AC-DC voltage difference

• AC and DC voltage ratio

• Other

11 – DC Resistance

• DC resistance

• DC resistance bridge

• Other

12 – Impedance

• Thompson Lampard capacitors

• Capacitance

• AC resistance

• Coaxial bridges

• Digital bridges

• Other

13 – Magnetics

• Magnetic properties of materials including nanomaterials

• Magnetometers and magnetic sensors

• Other

14 – Power and Energy

• Harmonic power

• Power analysis

• Smart grid & phase measurement unit

• Smart grid power quality

• Other

15 – High voltage and current

• DC high voltage/current

• AC high voltage/current

• Other

16 – Radio Frequency / Microwave

• Antennas, fields, and electromagnetic compatibility

• Fast pulses, terahertz, and waveform metrology

• High-frequency power and noise

• Network-parameters

• Other