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Miniaturized fiber-optic ultrasound probes for endoscopic tissue analysis by micro-opto-mechanical technology
Springer Science and Business Media LLC - Tập 16 - Trang 415-426 - 2014
E. Vannacci, L. Belsito, F. Mancarella, M. Ferri, G. P. Veronese, A. Roncaglia, E. Biagi
A new Micro-Opto-Mechanical System (MOMS) technology for the fabrication of optoacoustic probes on optical fiber is presented. The technology is based on the thermoelastic emission of ultrasonic waves from patterned carbon films for generation and on extrinsic polymer Fabry-Perot acousto-optical transducers for detection, both fabricated on miniaturized single-crystal silicon frames used to mount ...... hiện toàn bộ
Fabrication and characterization of hyaluronic acid microneedles to enhance delivery of magnesium ascorbyl phosphate into skin
Springer Science and Business Media LLC - - 2019
Yujin Kim, Sonalika Arup Bhattaccharjee, Moritz Beck-Broichsitter, Ajay K. Banga
Segmenting Fluid Effect on PCR Reactions in Microfluidic Platforms
Springer Science and Business Media LLC - Tập 7 - Trang 269-272 - 2005
E. J. Walsh, C. King, R. Grimes, A. Gonzalez
This paper evaluates the compatibility of segmenting fluids for two phase flow applications in biomedical microdevices. The evaluated fluids are chosen due to the variations in fluid properties and cost, while also reflecting their use in the recent literature. These segmenting fluids are examined to determine their compatibility with the Polymerase Chain Reaction (PCR), through controlled experim...... hiện toàn bộ
Magnetic-bead-based microfluidic system for ribonucleic acid extraction and reverse transcription processes
Springer Science and Business Media LLC - Tập 11 - Trang 339-350 - 2008
Chien-Ju Liu, Kang-Yi Lien, Ching-Yi Weng, Jyh-Wei Shin, Tsuey-Yu Chang, Gwo-Bin Lee
This paper presents a new integrated microfluidic chip that automatically performs ribonucleic acid (RNA) extraction and reverse transcription (RT) processes. The microfluidic system consists of a microfluidic control module and a magnetic bio-separator. The microfluidic control module can perform pumping and mixing of small amount of fluids and subsequent purification and concentration of RNA sam...... hiện toàn bộ
Fabrication of polymer microstructures for MEMS: sacrificial layer micromolding and patterned substrate micromolding
Springer Science and Business Media LLC - Tập 9 - Trang 815-821 - 2007
Nicholas Ferrell, James Woodard, Derek Hansford
Two soft lithography based fabrication techniques are employed for fabricating mechanically independent, freely suspended polymer microstructure from poly(n-propyl methacrylate) (PPMA), poly(methyl methacrylate) (PMMA), and polystyrene. Both methods involve a micromolding process followed by thermal bonding to the substrate. The first method, sacrificial layer micromolding, uses a water soluble sa...... hiện toàn bộ
Development of a microplate reader compatible microfluidic chip for ELISA
Springer Science and Business Media LLC - - 2012
Fenghua Hou, Qin Zhang, Jianping Yang, Xinchun Li, Xiupei Yang, Shuping Wang, Zhen Cheng
Frequency-controlled wireless shape memory polymer microactuator for drug delivery application
Springer Science and Business Media LLC - Tập 19 - Trang 1-10 - 2017
M. A. Zainal, A. Ahmad, M. S. Mohamed Ali
This paper reports the wireless Shape-Memory-Polymer actuator operated by external radio frequency magnetic fields and its application in a drug delivery device. The actuator is driven by a frequency-sensitive wireless resonant heater which is bonded directly to the Shape-Memory-Polymer and is activated only when the field frequency is tuned to the resonant frequency of heater. The heater is fabri...... hiện toàn bộ
Measurement of AC Electrokinetic Flows
Springer Science and Business Media LLC - Tập 5 - Trang 139-145 - 2003
Carl Meinhart, Dazhi Wang, Kimberly Turner
Micron-resolution particle image velocimetry (μ -PIV) is used to measure the motion of nominally 1-μm dia. polystyrene particles suspended in a water/sugar solution in a microdevice. Particle motion is induced by an applied electric field through dielectrophoretic (DEP) forces and through viscous interactions with the fluid. The motion of the fluid is governed by electrothermal forces arising from...... hiện toàn bộ
A primary current distribution model of a novel micro-electroporation channel configuration
Springer Science and Business Media LLC - Tập 12 - Trang 833-840 - 2010
Gregory D. Troszak, Boris Rubinsky
Traditional macro and micro-electroporation devices utilize facing electrodes, which generate electric fields inversely proportional to their separation distance. Although the separation distances in micro-electroporation devices are significantly smaller than those in macro-electroporation devices, they are limited by cell size. Because of this, significant potential differences are required to i...... hiện toàn bộ
Evaluation of transdifferentiation from mesenchymal stem cells to neuron-like cells using microfluidic patterned co-culture system
Springer Science and Business Media LLC - Tập 13 - Trang 517-526 - 2011
De-Yao Wang, Shinn-Chih Wu, Shau-Ping Lin, Shih-Hsiang Hsiao, Tze-Wen Chung, Yi-You Huang
We design a microfluidic patterned co-culture system for mouse mesenchymal stem cells (mMSCs) and neural cells to demonstrate the paracrine effects produced by the neural cells in facilitating the transdifferentiation from mMSCs to neuron-like cells. Neural cells and mMSC are orderly patterned in the microfluidic co-culturing system without direct cell contact. This configuration provides us to ca...... hiện toàn bộ
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