scholarly journals Towards an optofluidic pump?

2016 ◽  
Vol 3 (1) ◽  
Author(s):  
Olivier Emile ◽  
Janine Emile
Keyword(s):  
Low Power ◽  
Optical Radiation ◽  
Local Heating ◽  
Soap Film ◽  
Pressure Force ◽  
Symmetric Vibration ◽  
Free Standing ◽  
Higher Power ◽  
New Type ◽  
Radiation Pressure Force

AbstractMost of the vibrating mechanisms of optofluidic systems are based on local heating of membranes that induces liquid flow.We report here a new type of diaphragm pump in a liquid film based on the optical radiation pressure force. We modulate a low power laser that generates, at resonance, a symmetric vibration of a free standing soap film. The film lifetime strongly varies from 56 s at low power (2 mW) to 2 s at higher power (70 mW). Since the laser beam only acts mechanically on the interfaces, such a pump could be easily implemented on delicate microequipment on chips or in biological systems.

scholarly journals Laser-induced vibration of a thin soap film

Lab on a Chip ◽  
2014 ◽  
Vol 14 (18) ◽  
pp. 3525-3529 ◽  
Author(s):  
Olivier Emile ◽  
Janine Emile
Keyword(s):  
Radiation Pressure ◽  
Optical Radiation ◽  
Soap Film ◽  
Pressure Force ◽  
Radiation Pressure Force

We report on the vibration of a thin soap film based on the optical radiation pressure force.

scholarly journals Resonant vibration of a thin polymer film under optical excitation

Soft Matter ◽  
2021 ◽  
Vol 17 (14) ◽  
pp. 3923-3928
Author(s):  
Janine Emile ◽  
Olivier Emile ◽  
Pierre Gaudriault
Keyword(s):  
Polymer Film ◽  
Optical Radiation ◽  
Optical Excitation ◽  
Thin Polymer Film ◽  
Resonant Vibration ◽  
Thermoplastic Polymer ◽  
Pressure Force ◽  
Thin Polymer ◽  
Mode Vibration ◽  
Radiation Pressure Force

The breathing mode vibration of a thermoplastic polymer film under optical radiation pressure force resonant excitation leads to a mean thinning of the film, measured by an optical interference technique.

scholarly journals Improving the efficiency of pre-sowing treatment of winter wheat seeds with low power coherent optical radiation

2021 ◽  
Vol 659 (1) ◽  
pp. 012019
Author(s):  
M A Taranov ◽  
A S Kazakova ◽  
P V Gulyaev ◽  
M M Ukraintsev ◽  
A S Tatarintsev
Keyword(s):  
Winter Wheat ◽  
Low Power ◽  
Optical Radiation ◽  
Wheat Seeds

scholarly journals Numerical simulation of changes in the electric properties of biological tissues under local heating by laser radiation

2021 ◽  
Vol 2090 (1) ◽  
pp. 012049
Author(s):  
N V Kovalenko ◽  
A V Smirnov ◽  
O A Ryabushkin
Keyword(s):  
Numerical Simulation ◽  
Mathematical Model ◽  
Laser Radiation ◽  
Optical Radiation ◽  
Local Heating ◽  
Biological Tissues ◽  
Electric Properties ◽  
Reliable Tool ◽  
The Mathematical Model

Abstract The mathematical model that describes the local heating of biological tissues by optical radiation is introduced. Changes of the electric properties of biological tissues in such process can be used as a reliable tool for analyzing heating and damage degrees of tissues.

scholarly journals Observations of X-Ray Radiation Pressure Force Using High-Speed Diffracted X-Ray Tracking

2011 ◽  
Vol 100 (3) ◽  
pp. 312a
Author(s):  
Yuji C. Sasaki ◽  
Yasuhito Suzuki ◽  
Hiroshi Sekiguchi ◽  
Noboru Ohta ◽  
Tatsuhito Mastuo ◽  
...  
Keyword(s):  
Radiation Pressure ◽  
High Speed ◽  
Pressure Force ◽  
X Ray ◽  
Radiation Pressure Force

scholarly journals Long Dust Trails of Short Period Comets

1991 ◽  
Vol 126 ◽  
pp. 229-234
Author(s):  
H.U. Keller ◽  
K. Richter
Keyword(s):  
Radiation Pressure ◽  
Dust Cloud ◽  
Dust Particles ◽  
Pressure Force ◽  
Meteor Streams ◽  
Short Period ◽  
Orbital Periods ◽  
Comet Halley ◽  
Observational Techniques ◽  
Radiation Pressure Force

Comets constitute an important source for the zodiacal dust cloud. Mainly large particles are contributed because the smaller particles are emitted into hyperbolic orbits relative to the sun. Radiation pressure force reduces the effective solar gravitational attraction. Information about large cometary particles can be derived from a variety of sources requiring quite different observational techniques. Many distinct meteor streams are connected to orbits of short period comets. These streams contain large dust particles that are very little influenced by radiation pressure force. In some cases such as the η Aquarids and Orionids connected to comet Halley the total mass and the age of the meteors have been derived (Hughes, 1987; Hajduk, 1987). The mass of the streams is 5 to 10 times larger than the present mass of the nucleus and their lifetime corresponds to 2000 to 3000 orbital periods. Visible meteors are typically 10−2g and more of centimetre size.

scholarly journals Soap Films as 1D waveguides

2014 ◽  
Vol 1 (1) ◽  
Author(s):  
Olivier Emile ◽  
Janine Emile
Keyword(s):  
Film Thickness ◽  
Laser Light ◽  
Soap Film ◽  
Mode Propagation ◽  
Free Standing ◽  
One Dimensional ◽  
Strong Selection ◽  
Self Selection ◽  
Optical Modes ◽  
Selection Of

AbstractLaser light is injected in a free standing horizontal draining soap film through the glass frame sustaining the film. Two propagation regimes are clearly identified depending on the film thickness. At the beginning of the drainage, the soap film behaves as a multimode-one dimensional optofiuidic waveguide. In particular, we observe that the injected light creates a bottleneck in the film and part of the injected light is refracted leading to whiskers. At the end of the drainage where the film thickness is below 1μm, there is a strong selection among the various possible optical modes in the film, and part of the light is defiected. This leads to a self selection of the mode propagation inside the film.

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