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@article{af885ac8a4c74222884ea2ae68443510,
title = "Single-Crystal Rutile TiO 2 Nanocylinders are Highly Effective Transducers of Optical Force and Torque",
abstract = "Optical trapping of (sub)micron-sized particles is broadly employed in nanoscience and engineering. The materials commonly employed for these particles, however, have physical properties that limit the transfer of linear or angular momentum (or both). This reduces the magnitude of forces and torques, and the spatiotemporal resolution, achievable in linear and angular traps. Here, we overcome these limitations through the use of single-crystal rutile TiO 2 , which has an exceptionally large optical birefringence, a high index of refraction, good chemical stability, and is amenable to geometric control at the nanoscale. We show that rutile TiO 2 nanocylinders form powerful joint force and torque transducers in aqueous environments by using only moderate laser powers to apply nN·nm torques at kHz rotational frequencies to tightly trapped particles. In doing so, we demonstrate how rutile TiO 2 nanocylinders outperform other materials and offer unprecedented opportunities to expand the control of optical force and torque at the nanoscale.",
keywords = "dielectric crystals, force spectroscopy, optical torque wrench, optical trapping, rutile titanium dioxide, torque spectroscopy",
author = "Seungkyu Ha and Ying Tang and {Van Oene}, {Maarten M.} and Richard Janissen and Dries, {Roland M.} and Belen Solano and Adam, {Aur{\`e}le J.L.} and Dekker, {Nynke H.}",
year = "2019",
doi = "10.1021/acsphotonics.9b00220",
language = "English",
volume = "6",
pages = "1255--1265",
journal = "ACS Photonics",
issn = "2330-4022",
publisher = "American Chemical Society",
number = "5",

}

RIS

TY - JOUR

T1 - Single-Crystal Rutile TiO 2 Nanocylinders are Highly Effective Transducers of Optical Force and Torque

AU - Ha, Seungkyu

AU - Tang, Ying

AU - Van Oene, Maarten M.

AU - Janissen, Richard

AU - Dries, Roland M.

AU - Solano, Belen

AU - Adam, Aurèle J.L.

AU - Dekker, Nynke H.

PY - 2019

Y1 - 2019

N2 - Optical trapping of (sub)micron-sized particles is broadly employed in nanoscience and engineering. The materials commonly employed for these particles, however, have physical properties that limit the transfer of linear or angular momentum (or both). This reduces the magnitude of forces and torques, and the spatiotemporal resolution, achievable in linear and angular traps. Here, we overcome these limitations through the use of single-crystal rutile TiO 2 , which has an exceptionally large optical birefringence, a high index of refraction, good chemical stability, and is amenable to geometric control at the nanoscale. We show that rutile TiO 2 nanocylinders form powerful joint force and torque transducers in aqueous environments by using only moderate laser powers to apply nN·nm torques at kHz rotational frequencies to tightly trapped particles. In doing so, we demonstrate how rutile TiO 2 nanocylinders outperform other materials and offer unprecedented opportunities to expand the control of optical force and torque at the nanoscale.

AB - Optical trapping of (sub)micron-sized particles is broadly employed in nanoscience and engineering. The materials commonly employed for these particles, however, have physical properties that limit the transfer of linear or angular momentum (or both). This reduces the magnitude of forces and torques, and the spatiotemporal resolution, achievable in linear and angular traps. Here, we overcome these limitations through the use of single-crystal rutile TiO 2 , which has an exceptionally large optical birefringence, a high index of refraction, good chemical stability, and is amenable to geometric control at the nanoscale. We show that rutile TiO 2 nanocylinders form powerful joint force and torque transducers in aqueous environments by using only moderate laser powers to apply nN·nm torques at kHz rotational frequencies to tightly trapped particles. In doing so, we demonstrate how rutile TiO 2 nanocylinders outperform other materials and offer unprecedented opportunities to expand the control of optical force and torque at the nanoscale.

KW - dielectric crystals

KW - force spectroscopy

KW - optical torque wrench

KW - optical trapping

KW - rutile titanium dioxide

KW - torque spectroscopy

UR - http://www.scopus.com/inward/record.url?scp=85065102808&partnerID=8YFLogxK

U2 - 10.1021/acsphotonics.9b00220

DO - 10.1021/acsphotonics.9b00220

M3 - Article

VL - 6

SP - 1255

EP - 1265

JO - ACS Photonics

T2 - ACS Photonics

JF - ACS Photonics

SN - 2330-4022

IS - 5

ER -

ID: 53750509