Adaptive electrowetting lens-prism element

Terrab, Soraya; Watson, Alexander M.; Roath, Christopher; Gopinath, Juliet T.; Bright, Victor M.

doi:10.1364/oe.23.025838

Cited by 56 publications

(31 citation statements)

References 21 publications

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“…Scattering effects can be mitigated with new geometries to avoid interaction with solid interfaces such as the coated sidewalls. Furthermore, existing electrowetting prism designs [16] can further reduce the effects of secondary reflections and scattering by altogether avoiding interaction with curved liquidliquid interfaces, instead biasing the TIR state on a flat, angled liquid interface. This has the potential to further increase the extinction ratio.…”

Section: Resultsmentioning

confidence: 99%

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Large extinction ratio optical electrowetting shutter

Montoya¹,

Underwood²,

Terrab³

et al. 2016

Opt. Express

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A large extinction ratio optical shutter has been demonstrated using electrowetting liquids. The device is based on switching between a liquid-liquid interface curvature that produces total internal reflection and one that does not. The interface radius of curvature can be tuned continuously from 9 mm at 0 V to -45 mm at 26 V. Extinction ratios from 55.8 to 66.5 dB were measured. The device shows promise for ultracold chip-scale atomic clocks.

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Section: Resultsmentioning

confidence: 99%

“…The electrowetting effect is appealing as it enables transmissive, compact devices with minimal voltage requirements and no mechanical parts. The technique has been used to demonstrate lens and prism arrays for displays, imaging, tunable apertures and switches [5][6][7][8][9][10][11][12][13][14][15][16].…”

Section: Introductionmentioning

confidence: 99%

Large extinction ratio optical electrowetting shutter

Montoya¹,

Underwood²,

Terrab³

et al. 2016

Opt. Express

Self Cite

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“…The exploitation of this mechanism for useful neuroprosthetic control and therapeutic application will depend on optical tissue penetration constraints and the development of a cuff-mounted device that can optically scan the neural tissue appropriately. The recent and ongoing development of miniaturized optical fiber–coupled microscopes 48, 49 may soon enable fast three-dimensional scanning in vivo , with the integration of electro-wetting lenses enabling rapid depth-dimension scanning 50 .…”

Section: Discussionmentioning

confidence: 99%

Optical Read-out of Neural Activity in Mammalian Peripheral Axons: Calcium Signaling at Nodes of Ranvier

Fontaine¹,

Gibson²,

Caldwell³

et al. 2017

Sci Rep

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Current neural interface technologies have serious limitations for advanced prosthetic and therapeutic applications due primarily to their lack of specificity in neural communication. An optogenetic approach has the potential to provide single cell/axon resolution in a minimally invasive manner by optical interrogation of light-sensitive reporters and actuators. Given the aim of reading neural activity in the peripheral nervous system, this work has investigated an activity-dependent signaling mechanism in the peripheral nerve. We demonstrate action potential evoked calcium signals in mammalian tibial nerve axons using an in vitro mouse model with a dextran-conjugated fluorescent calcium indicator. Spatial and temporal dynamics of the signal are presented, including characterization of frequency-modulated amplitude. Pharmacological experiments implicate T-type CaV channels and sodium-calcium exchanger (NCX) as predominant mechanisms of calcium influx. This work shows the potential of using calcium-associated optical signals for neural activity read-out in peripheral nerve axons.

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“…In recent years, electrofluidics, as a mechanism of changing the wettability of a dielectric solid surface with the electric field, has attracted rapidly increasing attention in the application field of lab-on-chip [1], adaptive lens [2], smart window [3] and high speed reflective displays [4], and so on. The reflective electrofluidic display (EFD), firstly realized in 2003 by Hayes at Philips Research Labs [5], has been widely researched and developed.…”

Section: Introductionmentioning

confidence: 99%

11.4: The Fabrication of Flexible Electrofluidic Display Arrays Based on PEN Substrate

Zhao

Jiang

et al. 2018

Symp Digest of Tech Papers

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Flexible electrofluidic display (FLEFD), as one of the most promising reflective display technology, has drawn an increasing attention in recent years. In this study, we report the fabrication process for the FLEFD based on the flexible PEN film with ITO layer on the surface. The hyflon material was selected as the hydrophobic insulator layer to control the fabrication temperature below 170°C, and the photoresist was used to manufacture the pixel grids. After oil filing and packaging process, the electrical properties and optical properties of FLEFD were both taken into consideration. The results showed that FLEFD presented good display characteristics. The driving voltage of flexible device was 14V when the bending radius of curvature was 10cm. Furthermore, response time for the device was 18ms, and the aperture opening ratio was 42.5%.

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Adaptive electrowetting lens-prism element

Cited by 56 publications

References 21 publications

Large extinction ratio optical electrowetting shutter

Large extinction ratio optical electrowetting shutter

Optical Read-out of Neural Activity in Mammalian Peripheral Axons: Calcium Signaling at Nodes of Ranvier

11.4: The Fabrication of Flexible Electrofluidic Display Arrays Based on PEN Substrate

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