Results 31 to 40 of about 4,932 (250)
Photonic Approach to Phased Array Application [PDF]
Radioengineering, 2021 Many applications, including phased array antennas, require a significant and tunable time delay, which pure electrical methods cannot establish. A variable microwave true-time delay line utilizing a photonic approach is presented in this paper.
E. Udvary
doaj
Applied Physics ExpressWe report a coherent laser transmitter for free space optical communications based on multiwavelength coherent beam combining. We performed 5.6 Gbps free-space optical communications using a two-element optical phased array with three wavelengths ...
Eisuke Haraguchi +6 more
doaj +1 more source
Integrated optical phased array: Challenges and future trends [PDF]
APL PhotonicsIntegrated optical phased arrays (OPAs) enable precise, non-mechanical beam steering and have emerged as promising technology for various applications for applications spanning LiDAR, free-space optical communication, and biomedical imaging.
Yong Liu, Zhenli Dong, Hao Hu
doaj +1 more source
A Design Method of Optical Phased Array With Insufficient Phase Tuning Range
IEEE Photonics Journal, 2020 Optical phased array (OPA) can achieve beam steering by controlling the phase distribution of each channel. In traditional OPA, 2π phase tuning range is required to achieve beam steering.
Bo Yang +3 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
A Review of Semiconductor-Based Monolithic Optical Phased Array Architectures
IEEE Open Journal of the Solid-State Circuits Society, 2021 Semiconductor-based monolithic optical phased arrays (OPA) enable optical beam-steering for lidar and 3D imaging, free-space optical communications, projection and 3D holographical displays, and neural probes among many other possible applications.
Hossein Hashemi
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
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
High-speed ghost imaging by an unpredictable optical phased array
Frontiers in Physics, 2022 Ghost imaging (GI) retrieves an image from the correlation between a sequence of illumination patterns on the object and their corresponding bucket detections.
Xuyang Sun +10 more
doaj +1 more source
Internally sensed optical phased array
Optics Letters, 2013 Extending phased array techniques to optical frequencies is challenging because of the considerably smaller wavelengths and the difficulty of stabilizing the optical path lengths of multiple emitters to this level of precision. This is especially true under real-world conditions where thermal and vibrational disturbances cause path length variations ...
Bowman, David J +7 more
openaire +3 more sources