TY - JOUR
T1 - Highly Flexible and Ultraprecise Manipulation of Light-Levitated Femtoliter/Picoliter Droplets
AU - Jiao, Long
AU - Chen, Rong
AU - Zhu, Xun
AU - Liao, Qiang
AU - Wang, Hong
AU - An, Liang
AU - Zhu, Jie
AU - He, Xuefeng
AU - Feng, Hao
N1 - The authors gratefully acknowledge financial support from the National Natural Science Foundation of China (No. 51576021 and No. 51620105011), the Program for Back-up Talent Development of Chongqing University (No. CQU2017HBRC1A01), and the Fundamental Research Funds for the Central Universities (No. 2018CDXYDL0001).
PY - 2019/3/7
Y1 - 2019/3/7
N2 - Ultraprecise manipulation of the droplets at the microscale is a promising paradigm for broad implications in reagent transport and element analysis, but the existing strategies still suffer from cross-contamination or the miscellaneous auxiliaries. Inspired by the levitation, we develop a method for excellently manipulating levitated femtoliter/picoliter droplets by a single focused laser. We show that the unique light-induced vapor flow in association with the interface morphology is responsible for creation and manipulation of levitated droplets. In particular, we demonstrate that the levitated droplets formed by this light method show extraordinary motility. The highly accurate two-dimensional labyrinth movement of the levitated droplets with designed trajectories above the free surface is easily realized by scanning the light. These results demonstrate that a single focused light can function as an "optical baton" to enable us to construct a wide variety of the long-sought precise manipulation systems for bioassays, pharmacy, and chemosynthesis.
AB - Ultraprecise manipulation of the droplets at the microscale is a promising paradigm for broad implications in reagent transport and element analysis, but the existing strategies still suffer from cross-contamination or the miscellaneous auxiliaries. Inspired by the levitation, we develop a method for excellently manipulating levitated femtoliter/picoliter droplets by a single focused laser. We show that the unique light-induced vapor flow in association with the interface morphology is responsible for creation and manipulation of levitated droplets. In particular, we demonstrate that the levitated droplets formed by this light method show extraordinary motility. The highly accurate two-dimensional labyrinth movement of the levitated droplets with designed trajectories above the free surface is easily realized by scanning the light. These results demonstrate that a single focused light can function as an "optical baton" to enable us to construct a wide variety of the long-sought precise manipulation systems for bioassays, pharmacy, and chemosynthesis.
UR - http://www.scopus.com/inward/record.url?scp=85062334408&partnerID=8YFLogxK
U2 - 10.1021/acs.jpclett.8b03699
DO - 10.1021/acs.jpclett.8b03699
M3 - Journal article
C2 - 30758967
AN - SCOPUS:85062334408
SN - 1948-7185
VL - 10
SP - 1068
EP - 1077
JO - Journal of Physical Chemistry Letters
JF - Journal of Physical Chemistry Letters
IS - 5
ER -