Liang, M;
Harder, R;
Robinson, I;
(2018)
Radiation-driven rotational motion of nanoparticles.
Journal of Synchrotron Radiation
, 25
(Part 3)
pp. 757-762.
10.1107/S1600577518005039.
Preview |
Text
Robinson_gb5055.pdf - Published Version Download (666kB) | Preview |
Abstract
Focused synchrotron beams can influence a studied sample via heating, or radiation pressure effects due to intensity gradients. The high angular sensitivity of rotational X-ray tracking of crystalline particles via their Bragg reflections can detect extremely small forces such as those caused by field gradients. By tracking the rotational motion of single-crystal nanoparticles embedded in a viscous or viscoelastic medium, the effects of heating in a uniform gradient beam and radiation pressure in a Gaussian profile beam were observed. Changes in viscosity due to X-ray heating were measured for 42 µm crystals in glycerol, and angular velocities of 10-6 rad s-1 due to torques of 10-24 N m were measured for 340 nm crystals in a colloidal gel matrix. These results show the ability to quantify small forces using rotation motion of tracer particles.
| Type: | Article |
|---|---|
| Title: | Radiation-driven rotational motion of nanoparticles |
| Location: | United States |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1107/S1600577518005039 |
| Publisher version: | http://doi.org/10.1107/S1600577518005039 |
| Language: | English |
| Additional information: | This article is published under Creative Commons Attribution License (CC BY). |
| Keywords: | radiation pressure, rotational X-ray tracking, rotational dynamics |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > London Centre for Nanotechnology |
| URI: | https://discovery.ucl.ac.uk/id/eprint/10048259 |
Archive Staff Only
 |
View Item |
