Single-layer Microfluidic “disc” Diodes via Optofluidic Lithography for Ultra-low Reynolds Number Applications
نویسندگان
چکیده
Autonomous fluidic components that function at ultra-low Reynolds number (e.g., Re < 0.1) are critical to the advancement of integrated microfluidic circuitry. Here we present a single-layer microfluidic “disc” diode, which includes a free-moving cylindrical “disc” – constructed in situ using optofluidic lithography – that is transported to or away from the entrance of a docking channel to obstruct or promote fluid flow, respectively. COMSOL simulations yielded a theoretical Diodicity (Di) of 27.8. Experimental results revealed Di’s ranging from 2.29±0.58 to 3.84±1.76 for a one-disc system, and 4.69±1.21 to 6.66±1.10 for a four-disc (in series) system, corresponding to Re ≤ 0.025 flow.
منابع مشابه
Development of Elastomeric Optofluidic Devices for Lasing and Sensing
The term of optofluidics defines an emergent research field that combines microfluidics and optics. In many lab-on-a-chip applications, these two technologies are used in combining the microfluidics for sample delivery and optics for sensing and controlling. Optofluidic represents the implementation of optics in microfluidic platform that produces an unprecedented level of integration. Moreover...
متن کاملOptofluidic Dye Lasers
Optofluidic dye lasers refer to a class of liquid dye lasers, usually on a microfabricated device, in which the adaptive nature of the liquid gain medium allows the dynamical control of the laser properties. Miniaturizing liquid dye lasers onto a microfluidic device not only results in compact, easy-to-maintain and safe dye laser systems, but also provides unprecedented optical performances suc...
متن کاملCircular Microchannels Enhance Diodicity Performance at Ultra-low Reynolds Number for Microfluidic Bead-based Diodes
Self-regulating fluidic components are critical to the advancement of micro/nanofluidic circuitry for chemical and biological applications, including sample preparation on chip and point-of-care (POC) molecular diagnostics. Previously, a variety of diodic components have been developed to enable flow rectification in fluidic technologies (e.g., microscale drug delivery systems in which backflow...
متن کاملThree-dimensional fabrication of heterogeneous microstructures using soft membrane deformation and optofluidic maskless lithography.
We propose a method for high-throughput generation of 3D microstructures using a membrane-mounted microfluidic channel. Utilizing an optofluidic maskless lithography system, photopolymerized 3D microstructures are fabricated in a layer-by-layer fashion with the thickness of each layer controlled by the deformation of the membrane. The combination of low numerical aperture optical systems for ph...
متن کاملA hybrid silicon-PDMS optofluidic platform for sensing applications.
A hybrid silicon-poly(dimethysiloxane) (PDMS) optofluidic platform for lab-on-a-chip applications is proposed. A liquid-core waveguide with a self-aligned solid-core waveguide and a microfluidic device are integrated with a multilayer approach, resulting in a three-dimensional device assembly. The optofluidic layer was fabricated with a hybrid silicon-polymer technology, whereas the microfluidi...
متن کامل