Search Results - "Heikenfeld, J"

Wearable sensors: modalities, challenges, and prospects by Heikenfeld, J, Jajack, A, Rogers, J, Gutruf, P, Tian, L, Pan, T, Li, R, Khine, M, Kim, J, Wang, J

“…Wearable sensors have recently seen a large increase in both research and commercialization. However, success in wearable sensors has been a mix of both…”
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The microfluidics of the eccrine sweat gland, including biomarker partitioning, transport, and biosensing implications by Sonner, Z, Wilder, E, Heikenfeld, J, Kasting, G, Beyette, F, Swaile, D, Sherman, F, Joyce, J, Hagen, J, Kelley-Loughnane, N, Naik, R

“…Non-invasive and accurate access of biomarkers remains a holy grail of the biomedical community. Human eccrine sweat is a surprisingly biomarker-rich fluid…”
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Electrofluidic displays using Young-Laplace transposition of brilliant pigment dispersions by Heikenfeld, J, Zhou, K, Kreit, E, Raj, B, Yang, S, Sun, B, Milarcik, A, Clapp, L, Schwartz, R

“…Conventional electrowetting displays reconfigure the contact angle of a coloured oil film on a planar hydrophobic surface. We report on electrofluidic…”
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Ultra-simple wearable local sweat volume monitoring patch based on swellable hydrogels by Zhao, F J, Bonmarin, M, Chen, Z C, Larson, M, Fay, D, Runnoe, D, Heikenfeld, J

“…Quantifiably monitoring sweat rate and volume is important to assess the stress level of individuals and/or prevent dehydration, but despite intense research,…”
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Detailed analysis of defect reduction in electrowetting dielectrics through a two-layer ‘barrier’ approach by Schultz, A., Chevalliot, S., Kuiper, S., Heikenfeld, J.

“…Low-voltage electrowetting requires a thin dielectric capacitor and field strengths approaching 1 MV/cm. Unlike traditional metal/dielectric/metal capacitors,…”
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Large area and low power dielectrowetting optical shutter with local deterministic fluid film breakup by Zhao, R., Cumby, B., Russell, A., Heikenfeld, J.

“…A large area (>10 cm2) and low-power (0.1–10 Hz AC voltage, ∼10's μW/cm2) dielectrowetting optical shutter requiring no pixelation is demonstrated. The device…”
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Open nanofluidic films with rapid transport and no analyte exchange for ultra-low sample volumes by Twine, N B, Norton, R M, Brothers, M C, Hauke, A, Gomez, E F, Heikenfeld, J

“…Moving to ultra-low (<100 nL) sample volumes presents numerous challenges, many of which can be resolved by implementation of open nanofluidic films. These…”
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Scaling Dielectrowetting Optical Shutters to Higher Resolution: Microfluidic and Optical Implications by Russell, A, Kreit, E, Heikenfeld, J

“…A detailed study is reported on the implications of scaling dielectrowetting optical shutters to higher resolutions. Reducing droplet sizes from millimeters to…”
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Investigation of Laplace Barriers for Arrayed Electrowetting Lab-on-a-Chip by Schultz, A, Papautsky, I, Heikenfeld, J

“…Partial-post Laplace barriers have been postulated as a means to allow electrowetting transport and geometrical reshaping of fluids, followed by the…”
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A new oil/membrane approach for integrated sweat sampling and sensing: sample volumes reduced from μL's to nL's and reduction of analyte contamination from skin by Peng, R, Sonner, Z, Hauke, A, Wilder, E, Kasting, J, Gaillard, T, Swaille, D, Sherman, F, Mao, X, Hagen, J, Murdock, R, Heikenfeld, J

“…Wearable sweat biosensensing technology has dominantly relied on techniques which place planar-sensors or fluid-capture materials directly onto the skin…”
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High-transmission electrowetting light valves by Heikenfeld, J., Steckl, A. J.

“…High-efficiency spatial light modulation has been demonstrated for transmissive electrowetting (EW) light valves (ELVs). The ELV structure consists of a…”
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Bright e-Paper by transport of ink through a white electrofluidic imaging film by Hagedon, M., Yang, S., Russell, A., Heikenfeld, J.

“…Many of the highest performance approaches for electronic paper use voltage to reveal or hide dark pigments or dyes over a white pixel surface, and the…”
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Superwetting and aptamer functionalized shrink-induced high surface area electrochemical sensors by Hauke, A., Kumar, L.S. Selva, Kim, M.Y., Pegan, J., Khine, M., Li, H., Plaxco, K.W., Heikenfeld, J.

“…Electrochemical sensing is moving to the forefront of point-of-care and wearable molecular sensing technologies due to the ability to miniaturize the required…”
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Membrane isolation of repeated-use sweat stimulants for mitigating both direct dermal contact and sweat dilution by Simmers, P., Yuan, Y., Sonner, Z., Heikenfeld, J.

“…With the device integration of sweat stimulation, sweat becomes a stronger candidate for non-invasive continuous biochemical sensing. However, sweat stimulants…”
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A novel conductive membrane sensor protection technique to mitigate redox-active interferences by DeBrosse, M.C., Suresh, S., Karajic, A., Kim, S., Hussain, S., Heikenfeld, J.

“…Due to their high specificity and selectivity, receptor-based biosensors play an important role in real-time health monitoring. However, maintaining an ideal…”
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Experimental and Numerical Insights into Isotropic Spreading and Deterministic Dewetting of Dielectrowetted Films by Russell, A. C., Hsieh, W. L., Chen, K. C., Heikenfeld, J.

“…Dielectrowetting effects of surface wrinkling, isotropic vs anisotropic spreading, electrode geometry, and deterministic dewetting are presented both…”
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Electrowetting manipulation of any optical film by Hou, L., Smith, N. R., Heikenfeld, J.

“…Electrowetting manipulation of any optical film is reported. A square channel was constructed with four sidewall electrodes, coated with a hydrophobic…”
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Fabrication and Demonstration of Electrowetting Liquid Lens Arrays by Smith, N.R., Linlin Hou, Jinlin Zhang, Heikenfeld, J.

“…Reported is the fabrication and demonstration of an array of >12 000 switchable liquid microlenses, each ~300 mum in diameter and switchable through…”
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Analysis of pressure-driven membrane preconcentration for point-of-care assays by Drexelius, A., Hoellrich, A., Jajack, A., Gomez, E., Brothers, M., Hussain, S., Kim, S., Heikenfeld, J.

“…Point-of-care diagnostic devices for both physicians and patients themselves are now ubiquitous, but often not sensitive enough for highly dilute analytes…”
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Red light emission by photoluminescence and electroluminescence from Eu-doped GaN by Heikenfeld, J., Garter, M., Lee, D. S., Birkhahn, R., Steckl, A. J.

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