Results 61 to 70 of about 890 (171)
Optofluidic microchannels in aerogel [PDF]
Optics Letters, 2011 We report optofluidic waveguides made by filling microchannels in aerogel with water. The aerogel cladding is a nanoporous material with an extremely low refractive index of ~1.05, giving a large index step from the water core. Channels were formed by removing embedded optical fibers, which could be nonuniform or multiple.
Xiao, Limin, Birks, T.A.
openaire +3 more sources
Photothermal bubble: Dynamics, manipulation, and applications
Droplet, EarlyView.As a versatile platform for bubble manipulation, photothermal techniques empower diverse operations: planar translation by scanning the laser spot, sustained periodic bouncing from competing thermal and hydrodynamic flows, and even guided 3D trajectories achieved by tailoring the heating configuration.
Man Hu, Feng Wang, Daosheng Deng
wiley +1 more source
Optics Express, 2008 An optofluidic 1x4 switch is designed, fabricated, and tested. The switch is based on a blazed diffraction grating imprinted onto silicone elastomer at the bottom of a microfluidic channel that is filled with liquids with different refractive indices.
Alex, Groisman +5 more
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Optofluidic Tomography on a Chip [PDF]
Applied Physics Letters, 2011 Using lensfree holography we demonstrate optofluidic tomography on a chip. A partially coherent light source is utilized to illuminate the objects flowing within a microfluidic channel placed directly on a digital sensor array. The light source is rotated to record lensfree holograms of the objects at different viewing directions. By capturing multiple
Serhan O, Isikman +3 more
openaire +2 more sources
Gradient‐Structured Polymer Fiber Mats for Broadly Tunable Multicolor and White Lasing
Laser &Photonics Reviews, EarlyView.Hierarchically engineered electrospun fiber mats containing separated red, green, and blue dyes enable highly tunable multicolor and white random lasing. Spatially controlled dye distribution suppresses energy transfer, allowing precise color adjustment across wide color gamuts and accurate reproduction of daylight white standards.
Alina Szukalska +6 more
wiley +1 more source
Femtosecond Laser Fabrication of Monolithically Integrated Microfluidic Sensors in Glass
Sensors, 2014 Femtosecond lasers have revolutionized the processing of materials, since their ultrashort pulse width and extremely high peak intensity allows high-quality micro- and nanofabrication of three-dimensional (3D) structures.
Fei He +6 more
doaj +1 more source
Microfluidic Capillary Arrays for Pixelated Control of Multimaterial Flows
Small, EarlyView.A 3D‐printed pixellated capillary array maps up to thousands of fluid inputs into arbitrary multimaterial flow cross‐sections. Automated manifold design and laminar scaling are used to amplify printing resolution orders of magnitude, generating microscale fluidic control from printed elements, enabling designed microflows for potential use in ...
Max Chapman +2 more
wiley +1 more source
Lorentz Force Actuated Tunable-Focus Liquid Lens
Micromachines, 2019 Tunable-focus liquid lenses provide focal length tuning for optical systems, e.g., cameras, where physical movement of rigid lenses are not an option or not preferable.
Kari L. Van Grinsven +2 more
doaj +1 more source
Advanced Photonics Research, 2021 Nanoparticle tracking analysis (NTA) represents one essential technology to characterize diffusing nanoscale objects. Herein, uncovering dynamic processes and high‐precision measurements requires tracks with thousands of frames to reach high statistical ...
Fengji Gui +6 more
doaj +1 more source
Optofluidics: waveguides and devices
SPIE Proceedings, 2012 In this work we review recent results of our work on optofluidics. We show that single mode optofluidic waveguides with low loss can be realized using antiresonant reflecting optical confinement (ARROW). These waveguides can be fabricated using full standard silicon technology or hybrid silicon-polymer processes.
Testa G +4 more
openaire +5 more sources