Зафиксированная дата: March 19 2010

Duration: 22 minutes 31 seconds

The National Institute of Standards and Technology (NIST) has released three gold colloid reference materials nominally 10, 30 and 60nm. This presentation explores the dynamic light scattering measurement of these materials
Table of contents
1. Nanoparticle verification standards – measurement by dynamic light scattering of the NIST gold colloid standards RM 8011, 8012 and 8013
01:10
2. Abstract
00:39
3. Captain Rawle
00:20
4. Overview
00:27
5. Gustav Mie
00:59
6. ASTM Interlaboratory Studies (ILS)
02:17
7. ILS # 166
00:51
8. ILS #166 – NIH/NCL
01:00
9. E2490-09 http://www.astm.org/Standards/E2490.htm
01:31
10. RM8011, 8012, 8013
01:10
11. ASTM ILS # 166 For E2490-09 Measurement of particle size distribution of nanomaterials in suspension by Photon Correlation Spectroscopy (PCS)
00:30
12. Sample A - RM8011
01:15
13. Malvern experimental
00:31
14. Malvern PCS data – an untypical lab.
01:19
15. Sample B - RM8012
00:45
16. Electron Micrograph (NIST)
00:21
17. Image Analysis (Malvern)
00:28
18. Malvern PCS data – an untypical lab.
00:26
19. Sample C - RM8013
00:32
20. Malvern PCS data – an untypical lab.
00:36
21. The correlograms for the Au colloids
00:28
22. Diffusion coefficients
01:09
23. 40nm colloidal Au at 1730 (back-scatter) and 900
00:49
24. Relaxation time
00:30
25. Polarizer inserted
00:36
26. Another example With polarizer inserted
00:32
27. Summary
01:03
28. Acknowledgements
00:17