Results 11 to 20 of about 706,075 (298)

Wake‐Riding Effect‐Inspired Opto‐Hydrodynamic Diatombot for Non‐Invasive Trapping and Removal of Nano‐Biothreats

open access: yesAdvanced Science, 2023
Contamination of nano‐biothreats, such as viruses, mycoplasmas, and pathogenic bacteria, is widespread in cell cultures and greatly threatens many cell‐based bio‐analysis and biomanufacturing. However, non‐invasive trapping and removal of such biothreats
Jianyun Xiong   +9 more
doaj   +1 more source

Improved spatiotemporal resolution of anti-scattering super-resolution label-free microscopy via synthetic wave 3D metalens imaging

open access: yesOpto-Electronic Science, 2023
Super-resolution (SR) microscopy has dramatically enhanced our understanding of biological processes. However, scattering media in thick specimens severely limits the spatial resolution, often rendering the images unclear or indistinguishable ...
Yuting Xiao   +7 more
doaj   +1 more source

Performance Optimization for Phase-Sensitive OTDR Sensing System Based on Multi-Spatial Resolution Analysis

open access: yesSensors, 2018
This paper proposes and demonstrates a phase-sensitive optical time domain reflectometry (Φ-OTDR) sensing system with multi-spatial resolution (MSR) analysis property.
Yuanyuan Shan   +6 more
doaj   +1 more source

A Low Loss Quantum-Dot-Doped Optical Fiber Temperature Sensor Based on Flexible Print Technology

open access: yesIEEE Photonics Journal, 2020
A quantum dots optical fiber (QDOF) sensor is proposed for temperature sensing in this paper. The sensor is fabricated by the drop-on-demand inkjet printing technology.
Guosheng Zhang   +6 more
doaj   +1 more source

Physics-data-driven intelligent optimization for large-aperture metalenses

open access: yesOpto-Electronic Advances, 2023
Metalenses have gained significant attention and have been widely utilized in optical systems for focusing and imaging, owing to their lightweight, high-integration, and exceptional-flexibility capabilities.
Yingli Ha   +11 more
doaj   +1 more source

A highly contiguous genome assembly of Brassica nigra (BB) and revised nomenclature for the pseudochromosomes

open access: yesBMC Genomics, 2020
Background Brassica nigra (BB), also called black mustard, is grown as a condiment crop in India. B. nigra represents the B genome of U’s triangle and is one of the progenitor species of B.
Kumar Paritosh   +2 more
doaj   +1 more source

Bayesian Model for 3D Undulating Terrain Depth Estimation Using Photon Counting LiDAR

open access: yesRemote Sensing, 2023
Photon counting LiDAR can capture the 3D information of long-distance targets and has the advantages of high sensitivity and high resolution. However, the noise counts restrict improvements in the photon counting imaging quality.
Rui Wang   +5 more
doaj   +1 more source

Using an Auxiliary Mach–Zehnder Interferometer to Compensate for the Influence of Laser-Frequency-Drift in Φ-OTDR

open access: yesIEEE Photonics Journal, 2019
In phase-sensitive optical time-domain reflectometry (Φ-OTDR), the frequency drift of the laser source induces the fluctuation of signal, which limits the measurement capacity of Φ-OTDR for low frequency severely.
Quan Yuan   +4 more
doaj   +1 more source

An Asymmetric Feature Enhancement Network for Multiple Object Tracking of Unmanned Aerial Vehicle

open access: yesRemote Sensing, 2023
Multiple object tracking (MOT) in videos captured by unmanned aerial vehicle (UAV) is a fundamental aspect of computer vision. Recently, the one-shot tracking paradigm integrates the detection and re-identification (ReID) tasks, striking a balance ...
Jianbo Ma   +5 more
doaj   +1 more source

Optimization Design Method of a 6-DOF Micromanipulation Mechanism for Extreme Ultraviolet Projection Lithography Objective Lens

open access: yesShock and Vibration
The six-degree-of-freedom (6-DOF) micromotion mechanism is a key component in extreme ultraviolet (EUV) projection lithography objectives to compensate for wavefront aberration and ensure performance stability.
Shiyu Li   +6 more
doaj   +1 more source

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