TY - JOUR
T1 - Organization of Particle Islands through Light-Powered Fluid Pumping
AU - Tansi, Benjamin M.
AU - Peris, Matthew L.
AU - Shklyaev, Oleg E.
AU - Balazs, Anna C.
AU - Sen, Ayusman
N1 - Funding Information:
The authors would like to thank the Materials Research Institute at Penn State for the use of their facilities and for their useful insight. We also thank Josh Kauffman and Subhadip Ghosh for collecting SEM data and providing gold particles, respectively. This work was made possible by NSF-CCI Award Number 1740630.
Publisher Copyright:
© 2019 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim
PY - 2019/2/18
Y1 - 2019/2/18
N2 - The field of active matter holds promise for applications in particle assembly, cargo and drug delivery, and sensing. In pursuit of these capabilities, researchers have produced a suite of nanomotors, fluid pumps, and particle assembly strategies. Although promising, there are many challenges, especially for mechanisms that rely on chemical propulsion. One way to circumvent these issues is by the use of external energy sources. Herein, we propose a method of using freely suspended nanoparticles to generate fluid pumping towards desired point sources. The pumping rates are dependent on particle concentration and light intensity, making it highly controllable. Using these directed flows, we further demonstrate the ability to reversibly construct and move colloidal crystals.
AB - The field of active matter holds promise for applications in particle assembly, cargo and drug delivery, and sensing. In pursuit of these capabilities, researchers have produced a suite of nanomotors, fluid pumps, and particle assembly strategies. Although promising, there are many challenges, especially for mechanisms that rely on chemical propulsion. One way to circumvent these issues is by the use of external energy sources. Herein, we propose a method of using freely suspended nanoparticles to generate fluid pumping towards desired point sources. The pumping rates are dependent on particle concentration and light intensity, making it highly controllable. Using these directed flows, we further demonstrate the ability to reversibly construct and move colloidal crystals.
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U2 - 10.1002/anie.201811568
DO - 10.1002/anie.201811568
M3 - Article
C2 - 30548990
AN - SCOPUS:85060643022
SN - 1433-7851
VL - 58
SP - 2295
EP - 2299
JO - Angewandte Chemie - International Edition
JF - Angewandte Chemie - International Edition
IS - 8
ER -