Results 31 to 40 of about 16,016 (144)

Localized Temperature Monitoring in Mouse Brain during Light Delivery via a Non‐Planar Tapered Fiber‐Integrated µRTD Sensor

Advanced Materials, EarlyView.
We report a multifunctional tapered optical fiber integrating a conformal micro‐resistance temperature detector (µRTD) for local, real‐time thermometry during optical stimulation. The platform combines light‐delivery and temperature sensing within a minimally invasive footprint, enabling detection of sub‐degree cortical heating under representative ...
Antonio Balena, Marco Bianco, Barbara Spagnolo, Muhammad Fayyaz Kashif, Alberto Bramati, Massimo De Vittorio, Ferruccio Pisanello   +6 more
wiley   +1 more source

Real-time optical micro-manipulation using optimized holograms generated on the GPU

, 2010
Holographic optical tweezers allow the three dimensional, dynamic, multipoint manipulation of micron sized dielectric objects. Exploiting the massive parallel architecture of modern GPUs we can generate highly optimized holograms at video frame rate ...
Ahrenberg, Ashkin, Cheong, Curtis, Di Leonardo, Dufresne, Egri, Elsen, Grier, Leach, Lesem, Liesener, Liu, Masuda, Pleguezuelos, Preece, Preis, R. Di Leonardo, Reicherter, Reicherter, S. Bianchi, Shimobaba, Visscher   +22 more
core   +1 more source

Simulation of superresolution holography for optical tweezers [PDF]

, 2008
Optical tweezers manipulate microscopic particles using foci of light beams. Their performance is therefore limited by diffraction. Using computer simulations of a model system, we investigate the application of superresolution holography for two ...
, Ashkin A, Berry M, Berry M V, Blanca C M, Born M, Eric Yao, Gerchberg R W, Gerchberg R W, Graeme Whyte, Johannes Courtial, Kempf A Ferreira P J S G, Laura C Thomson, Seldowitz M A, Soifer V, Yannick Boissel   +15 more
core   +2 more sources

Highly Anisotropic Quasi‐Direct Organic Metal Halide Hybrids: A Platform for Polarization‐Sensitive Optoelectronics

Advanced Materials Technologies, EarlyView.
One‐dimensional C4N2H14PbBr4 is shown to have a quasi‐direct electronic band structure and strongly anisotropic transport with polarized broadband emission. A GW/Bethe–Salpeter excited‐state force formalism, supported by polarized Raman and temperature‐dependent photoluminescence, identifies low–frequency Pb–Br phonons that drive ultrafast exciton self‐
Rijan Karkee, Rafael R. Del Grande, Yeonjoo Lee, Jinkyoung Yoo, Azza Ben‐Akacha, Biwu Ma, Michael T. Pettes, David A. Strubbe   +7 more
wiley   +1 more source

Vision‐Augmented Wearable Interfaces: Bioinspired Approaches for Realistic AI‐Human‐Machine Interaction

Advanced Materials Technologies, EarlyView.
This review presents recent progress in vision‐augmented wearable interfaces that combine artificial vision, soft wearable sensors, and exoskeletal robots. Inspired by biological visual systems, these technologies enable multimodal perception and intelligent human–machine interaction.
Jihun Lee, Gwuidong Ryu, Kisoo Kim, Feng Xu, Won Gu Lee   +4 more
wiley   +1 more source

Real-time dynamic holographic image storage device [PDF]

, 1990
A real-time dynamic holographic image storage device uses four-wave mixing in a pair of photorefractive crystals. An oscillation is produced between the crystals which can be maintained indefinitely after the initial object beam is discontinued.
Lafleur, Sharon S., Montgomery, Raymond C.   +1 more
core   +1 more source

Phototunable Polarization Volume Gratings Driven by Chiral Hydrazone Switches

Advanced Optical Materials, EarlyView.
Chiral hydrazone photoswitches incorporated into polarization volume gratings enable light‐driven, reversible modulation of optical properties. UV and blue light irradiation reversibly alter the hydrazone isomer ratio, leading to tunable diffraction efficiency and spectral response across the visible spectrum.
Artem Boichuk, Lauri Uosukainen, Indu Bala, Ivan Aprahamian, Arri Priimagi   +4 more
wiley   +1 more source

Advanced modelling of a moderate-resolution holographic spectrograph

, 2017
In the present article we consider an accurate modeling of spectrograph with cascade of volume-phase holographic gratings. The proposed optical scheme allows to detect spectra in an extended wavelength range without gaps providing relatively high ...
Fabrika, Sergei, Muslimov, Eduard, Pavlycheva, Nadezhda, Valyavin, Gennady   +3 more
core   +1 more source

Shedding Light on Diatom Photonics by means of Digital Holography [PDF]

, 2012
Diatoms are among the dominant phytoplankters in the worl's ocean, and their external silica investments, resembling artificial photonics crystal, are expected to play an active role in light manipulation.
Antonucci, A., Congestri, R., Coppola, G., De Stefano, L., De Stefano, M., De Tommasi, E., Di Caprio, Giuseppe   +6 more
core   +2 more sources

Direct Photocurrent Detection of Optical Vortex Based on the Orbital Photo Galvanic Effect: Progress, Challenge, and Perspective

Advanced Science, EarlyView.
Direct orbital angular momentum (OAM) detection through the orbital photogalvanic effect offers a scalable route for integrated optoelectronics. This perspective evaluates symmetry‐driven material selection and demonstrates how electrode matrices enable the resolution of complex, mixed OAM modes.
Jinluo Cheng, Dehong Yang, Weiming Wang, Chang Xu, Zipu Fan, Dong Sun   +5 more
wiley   +1 more source