Exploring Single-Nanoparticle Dynamics at High Temperature by Optical Tweezers

authors	Lu, DS; Labrador-Paez, L; Ortiz-Rivero, E; Frades, P; Antoniak, MA; Wawrzynczyk, D; Nyk, M; Brites, CDS; Carlos, LD; Sole, JAG; Haro-Gonzalez, P; Jaque, D
nationality	International
journal	NANO LETTERS
author keywords	nanoparticle velocity; optical tweezers; Brownian motion; single nanoparticle; upconversion; high temperature
abstract	The experimental determination of the velocity of a colloidal nanoparticle (v(Np)) has recently became a hot topic. The thermal dependence of v(Np) is still left to be explored although it is a valuable source of information allowing, for instance, the discernment between ballistic and diffusive regimes. Optical tweezers (OTs) constitute a tool especially useful for the experimental determination of v m , although they have only been capable of determining it at room temperature. In this work, we demonstrate that it is possible to determine the temperature dependence of the diffusive velocity of a single colloidal nanoparticle by analyzing the temperature dependence of optical forces. The comparison between experimental results and theoretical predictions allowed us to discover the impact that the anomalous temperature dependence of water properties has on the dynamics of colloidal nanoparticles in this temperature range.
publisher	AMER CHEMICAL SOC
issn	1530-6984
isbn	1530-6992
year published	2020
volume	20
issue	11
beginning page	8024
ending page	8031
digital object identifier (doi)	10.1021/acs.nanolett.0c02936
web of science category	Chemistry, Multidisciplinary; Chemistry, Physical; Nanoscience & Nanotechnology; Materials Science, Multidisciplinary; Physics, Applied; Physics, Condensed Matter
subject category	Chemistry; Science & Technology - Other Topics; Materials Science; Physics
unique article identifier	WOS:000592495700030