| 00:00:00 | Nanoparticle verification standards – measurement by dynamic light scattering of the NIST gold colloid standards RM 8011, 8012 and 8013 |
| 00:01:10 | Abstract |
| 00:01:49 | Captain Rawle |
| 00:02:09 | Overview |
| 00:02:36 | Gustav Mie |
| 00:03:35 | ASTM Interlaboratory Studies (ILS) |
| 00:05:52 | ILS # 166 |
| 00:06:43 | ILS #166 – NIH/NCL |
| 00:07:43 | E2490-09 http://www.astm.org/Standards/E2490.htm |
| 00:09:14 | RM8011, 8012, 8013 |
| 00:10:24 | ASTM ILS # 166 For E2490-09 Measurement of particle size distribution of nanomaterials in suspension by Photon Correlation Spectroscopy (PCS) |
| 00:10:54 | Sample A - RM8011 |
| 00:12:09 | Malvern experimental |
| 00:12:40 | Malvern PCS data – an untypical lab. |
| 00:13:59 | Sample B - RM8012 |
| 00:14:44 | Electron Micrograph (NIST) |
| 00:15:05 | Image Analysis (Malvern) |
| 00:15:33 | Malvern PCS data – an untypical lab. |
| 00:15:59 | Sample C - RM8013 |
| 00:16:31 | Malvern PCS data – an untypical lab. |
| 00:17:07 | The correlograms for the Au colloids |
| 00:17:35 | Diffusion coefficients |
| 00:18:44 | 40nm colloidal Au at 1730 (back-scatter) and 900 |
| 00:19:33 | Relaxation time |
| 00:20:03 | Polarizer inserted |
| 00:20:39 | Another example With polarizer inserted |
| 00:21:11 | Summary |
| 00:22:14 | Acknowledgements |
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