TY  - CONF
A1  - Fagan, J.
A1  - Hodoroaba, Vasile-Dan
T1  - VAMAS TWA 34 Nanoparticle Populations Combined Projects P15 and P16
N2  - The progress in the VAMAS Project #15 "Measurement of particle size and shape distribution of bipyramidal titania including deposition from liquid suspension" within TWA 34 Nanoparticle Populations is presented with highlight of the following points:
- Determine and compare particle size and shape distribution by means of electron microscopy (SEM, TEM, STEM-in-SEM), atomic force microscopy (AFM) and small angle X-ray scattering (SAXS).
- Determine uncertainty induced by deposition protocol from liquid suspension with comparison to known values from a prior ILC with already deposited nanoparticles on TEM grids.
- Provide comparative validation of protocols for the techniques other than TEM.
Further, the VAMAS/TWA 34 Project #16 "Measurement of (relative) number concentration of bimodal silica nanoparticles including deposition from liquid suspension" is presented. Follwowing points are discusssed:
- Validate the performance of imaging methods to measure the relative number concentration by electron microscopy (SEM, TEM) and atomic force microscopy (AFM) and two modes of bimodal (30 and 60 nm) silica nanoparticles
- Validate the performance of small angle X-ray scattering (SAXS) for the traceable measurement of the number concentration of the two modes.
- Discussion of sample preparation issues
- Publication of the results in 2026
T2  - Versailles Project on Advanced Materials and Standards (VAMAS) 50th Steering Committee Meeting
CY  - London, United Kingdom
DA  - 14.09.2025
KW  - VAMAS
KW  - Interlaboratory comparison
KW  - Particle size and shape distribution
KW  - Particle number concentration
KW  - Standardisation
PY  - 2025
UR  - https://www.vamas.org/twa34/index.html
AN  - OPUS4-64234
LA  - eng
AD  - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany
ER  -