Abstract
In a temperature gradient built by infrared laser heating, polyethylene glycol (PEG) of large concentration moves away from the hot region. The resulting concentration gradient of PEG creates entropic potential well and traps another solute of small concentration due to diffusiophoresis. Here we develop this method to work in two dimensional spaces and time. The steering of laser traps colloids, DNA, and living cells in designed two-dimensional patterns. By modulating laser intensity with time, the protein concentration is periodically controlled in tens of mHz. This method could be useful for a directed assembly of biological materials.
| Original language | English |
|---|---|
| Article number | 243704 |
| Journal | Applied Physics Letters |
| Volume | 103 |
| Issue number | 24 |
| DOIs | |
| Publication status | Published - Dec 9 2013 |
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All Science Journal Classification (ASJC) codes
- Physics and Astronomy (miscellaneous)
Cite this
(2+1)-Dimensional manipulation of soft biological materials by opto-thermal diffusiophoresis. / Maeda, Yusuke.
In: Applied Physics Letters, Vol. 103, No. 24, 243704, 09.12.2013.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - (2+1)-Dimensional manipulation of soft biological materials by opto-thermal diffusiophoresis
AU - Maeda, Yusuke
PY - 2013/12/9
Y1 - 2013/12/9
N2 - In a temperature gradient built by infrared laser heating, polyethylene glycol (PEG) of large concentration moves away from the hot region. The resulting concentration gradient of PEG creates entropic potential well and traps another solute of small concentration due to diffusiophoresis. Here we develop this method to work in two dimensional spaces and time. The steering of laser traps colloids, DNA, and living cells in designed two-dimensional patterns. By modulating laser intensity with time, the protein concentration is periodically controlled in tens of mHz. This method could be useful for a directed assembly of biological materials.
AB - In a temperature gradient built by infrared laser heating, polyethylene glycol (PEG) of large concentration moves away from the hot region. The resulting concentration gradient of PEG creates entropic potential well and traps another solute of small concentration due to diffusiophoresis. Here we develop this method to work in two dimensional spaces and time. The steering of laser traps colloids, DNA, and living cells in designed two-dimensional patterns. By modulating laser intensity with time, the protein concentration is periodically controlled in tens of mHz. This method could be useful for a directed assembly of biological materials.
UR - http://www.scopus.com/inward/record.url?scp=84890481505&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84890481505&partnerID=8YFLogxK
U2 - 10.1063/1.4847636
DO - 10.1063/1.4847636
M3 - Article
AN - SCOPUS:84890481505
VL - 103
JO - Applied Physics Letters
JF - Applied Physics Letters
SN - 0003-6951
IS - 24
M1 - 243704
ER -