Results 31 to 40 of about 2,176 (250)
High-Speed Optical-Beam Scanning by an Optical Phased Array Using Electro-Optic Polymer Waveguides
IEEE Photonics Journal, 2020 Optical phased arrays (OPAs), which manipulate an optical beam by controlling the phase of light, are optical devices characterized by high speed, small size, light weight, and high reliability that make various applications possible.
Yoshikuni Hirano +7 more
doaj +1 more source
DDPG-Based Beamforming Optimization for Optical Phased Arrays
IEEE Photonics JournalTo address the limited beam optimization capability of conventional methods in optical phased arrays, this paper proposes a beam optimization method based on the deep deterministic policy gradient (DDPG) algorithm.
Dongyang Jiang +6 more
doaj +1 more source
Photonics, 2023 Optical phased arrays (OPAs) have great potential in the fields of integrated solid-state light detection and ranging. The ranging distance of an OPA can be further enlarged by improving the directionality of the grating antenna.
Jinmei Wei +6 more
doaj +1 more source
Spatial biology in cancer epigenetics
Molecular Oncology, EarlyView.Spatial epigenomics combines molecular profiling with tissue architecture to reveal how gene regulation is organized within intact tissues. In cancer, these technologies uncover the mechanisms driving tumor heterogeneity and microenvironmental interactions, opening new opportunities for biomarker discovery and precision medicine.
Eva Crespo‐García, Manel Esteller
wiley +1 more source
The Review of Beamforming Technology Based on Optical True Time Delay Line
天地一体化信息网络, 2022 The important role satellite communications plays in next-generation communication protocols brings both opportunities and challenges.Beamforming is an essential technology for effi cient and fl exible utilization of onboard resources.To explored a ...
Shiyi XIA, Guotong LI
doaj +2 more sources
Implantable silicon neural probes with nanophotonic phased arrays for single-lobe beam steering
Communications EngineeringIn brain activity mapping with optogenetics, patterned illumination is crucial for targeted neural stimulation. However, due to optical scattering in brain tissue, light-emitting implants are needed to bring patterned illumination to deep brain regions ...
Fu-Der Chen +14 more
doaj +1 more source
Photonics, 2022 Relative intensity noise (RIN) is an important factor that determines the performance of optical phased arrays (OPA) that are configured using semiconductor lasers as light emission sources. This study proposes a method of improving the optical signal-to-
Anh-Hang Nguyen, Hyuk-Kee Sung
doaj +1 more source
Directed evolution of enzymes at the crossroads of tradition and innovation
FEBS Open Bio, EarlyView.An iterative cycle of data‐driven enzyme optimization comprising four stages: genetic diversification of a template enzyme, expression of protein variants, high‐throughput evaluation, and machine‐learning‐guided redesign of the next variant library.
Maria Tomkova +2 more
wiley +1 more source
Photonics, 2023 Integrated optical phased arrays (OPAs) play an important role in a broad range of applications. Fabrication constraints, however, pose a limit to the minimum inter-element separation that further results in high-intensity side lobes.
Ivan Aldaya +6 more
doaj +1 more source
Five‐Year Disease Progression in Synuclein Seeding Positive Sporadic Parkinson's Disease
Annals of Clinical and Translational Neurology, EarlyView.ABSTRACT Objective To provide a comprehensive description of disease progression in synuclein seeding assay (SAA) positive sporadic Parkinson Disease participants, using Neuronal Synuclein Disease integrated biological and functional impairment staging framework.
Paulina Gonzalez‐Latapi +19 more
wiley +1 more source