Results 131 to 140 of about 967,322 (299)

Beam-steering nanophotonic phased-array neural probes

, 2019
We demonstrate the first implantable nanophotonic neural probes with integrated silicon nitride phased arrays. Coherent beam-steering is achieved in brain tissue by wavelength tuning.
Moreaux, L., Almog, I., Valiante, T., Lordello, T., Azadeh Naderian, Liu, X., Homeira Moradi-Chameh, Joyce K. S. Poon, Tianyuan Xue, Roukes, M., Taufik A. Valiante, Poon, J. ; https://orcid.org/, Michael L. Roukes, Xue, T., Laurent C. Moreaux, Ilan Felts Almog, Thomas Lordello, Sara Mahallati, Eran Segev, Trevor M. Fowler, Sacher, W., Mahallati, S., Wesley D. Sacher, Fu-Der Chen, Naderian, A., Michael Chang, Segev, E., Chen, F., Xinyu Liu, Fowler, T., Chang, M., Moradi-Chameh, H.   +31 more
core   +1 more source

Exceptional Electro‐Optic Coefficient Unlocked via Polarization Swaying in KNbO3 Thin Films

Advanced Functional Materials, EarlyView.
We present the largest reported electro‐optic response in any material to date, guided by a new design principle that exploits ultralow coercive field polarization swaying enabled by low‐symmetry ferroelectric phases in monoclinic KNbO3 thin films for energy‐efficient classical and quantum photonic integrated circuits. ABSTRACT The electro‐optic effect
Sankalpa Hazra, Aiden Ross, Brynn Brower, Tobias Schwaigert, Ian Reed Philippi, Albert Suceava, Himirkanti Sarkar, Muhammed Aminul Haque Chowdhury, Suchismita Sarker, Darrell G. Schlom, Long‐Qing Chen, Venkatraman Gopalan   +11 more
wiley   +1 more source

3-D Printable Metal-Dielectric Metasurface for Risley Prism-Based Beam-Steering Antennas

IEEE Access
A 3-D printable, planar, metal-dielectric metasurface-based, 2-D beam-steering system for aperture-type antennas is presented in this paper. This beam-steering system, also known as the near-field meta-steering system, comprises two fully passive phase ...
Md Yeakub Ali, Ali Lalbakhsh, Khushboo Singh, Slawomir Koziel, Lukasz Golunski   +4 more
doaj   +1 more source

5G NR Multi-Beam Steering employing a Photonic TTD Chip assisted by Multi-Core Fiber

, 2019
Beam steering demonstration employing integrated optical ring resonators (ORRs) and multi-core fiber with multiple beams at 17.6 GHz and 26 GHz obtains 103.5° beam separation.
Ton Koonen, Roberto Llorente, Trinidad, Ailee, Eduward Tangdiongga, Morant, Maria, Tangdiongga, Eduward; id_orcid, Llorente, Roberto, Ailee Trinidad, Maria Morant, Koonen, Ton   +9 more
core   +1 more source

Ultra‐Thin Tow‐Based Discontinuous Composites—Material Overview and Aspirations

Advanced Functional Materials, EarlyView.
Tow‐based discontinuous composites made from ultra‐thin tapes offer outstanding in‐plane mechanical properties. This material, inspired by Nacre, has high volume fraction of tapes exceeding 90 % and allows for quasi‐isotropic material plates less than 100 micrometer in thickness.
Ioannis Katsivalis, Vasiliki Safranoglou, Luis Gulfo, Michael R. Wisnom, Martin Fagerström, Malin Åkermo, Soraia Pimenta, Dan Zenkert, Leif E. Asp   +8 more
wiley   +1 more source

Design of a broadband acousto-optic filter using bulk acoustic wave beam steering with an interdigital transducer

Results in Physics
Acousto-optic tunable filters are photonics devices whose operation is fundamentally based on crystal acoustics. One of the phenomena used to improve performances of bulk acousto-optic devices is acoustic beam steering.
Konstantin B. Yushkov, Natalya F. Naumenko, Vladimir Ya. Molchanov   +2 more
doaj   +1 more source

Holographic memory using beam steering [PDF]

, 2007
A method, apparatus, and system provide the ability for storing holograms at high speed. A single laser diode emits a collimated laser beam to both write to and read from a photorefractice crystal.
Reyes, George F., Hanan, Jay C., Zhou, Hanying, Chao, Tien-Hsin   +3 more
core  

Self‐Adaptive Gradient Interphase Enables Durable Solid‐State Lithium Metal Batteries

Advanced Functional Materials, EarlyView.
This work presents a machine learning‐guided interfacial design that forms a self‐adaptive graded interphase on lithium metal anode. A B105M40 composite interlayer evolves into lithiophilic, porous, and fast‐ion‐conducting phases, enabling intimate contact, dendrite suppression, and uniform lithium deposition.
Hongmin Liu, Rui Li, Yitao Lou, Xinran Gao, Min Xu, Shijian Wang, Nana Wang, Huakun Liu, Guoxiu Wang, Zhongchao Bai   +9 more
wiley   +1 more source

Dual Frequency Multi-Functional via-Less Leaky Wave Antenna Featuring Enhanced Frequency Sensitivity and Dual Beam Scanning Capability

IEEE Access
In this paper we present a dual band low cross-polarized periodic microstrip leaky wave antenna (LWA) based on the multi mode resonator concept (MMR).
Basudev Majumder, Sarath Sankar Vinnakota, Madhusudhan Goud Rangula, Krishnamoorthy Kandasamy   +3 more
doaj   +1 more source

Material Coupling in Hybrid Neuromorphic Devices: From Fundamentals to System‐Level Applications

Advanced Functional Materials, EarlyView.
Hybrid neuromorphic devices utilize heterointerfaces between emerging semiconductors, where charge transfer and trapping, ion or defect modulation, and photogating are translated into synaptic functions. This paper discusses coupling strategies that tailor interfacial electronic and ionic properties in organic semiconductors, metal oxides, two ...
Minsu So, Sunwoo Jeong, Youngmin Han, Fabrizio Torricelli, Hocheon Yoo, Junhwan Choi   +5 more
wiley   +1 more source