Results 1 to 10 of about 51,255 (199)

All-In-Focus Polarimetric Imaging Based on an Integrated Plenoptic Camera with a Key Electrically Tunable LC Device

open access: yesMicromachines, 2022
In this paper, a prototyped plenoptic camera based on a key electrically tunable liquid-crystal (LC) device for all-in-focus polarimetric imaging is proposed.
Mingce Chen   +8 more
doaj   +1 more source

Research on the localized lightfield features of metallic nano-cone-tip optical antenna via investigating near-field lightwave and correlated net-charge distribution

open access: yesScientific Reports, 2023
In this paper, the near-field lightwave characteristics of an arrayed silicon nano-cone-tip optical antenna (NOA) covered by a common metal film, which can be viewed as a featured quasi quantum dot (QD), are carefully investigated.
Taige Liu   +5 more
doaj   +1 more source

Fault-Tolerant Guidance of Rocket Vertical Landing Phase Based on MPC Framework

open access: yesInternational Journal of Aerospace Engineering, 2022
For the vertical landing process of reusable rockets, the landing accuracy is likely to be affected by disturbances and faults during flight. In this paper, a fault-tolerant guidance method based on the MPC framework is put forward.
Jingqi Li   +5 more
doaj   +1 more source

Multispectral Fluorescence Imaging [PDF]

open access: yesJournal of Nuclear Medicine, 2009
Multispectral fluorescence imaging (MSFI) is a rapidly growing field with broad applications in both preclinical and clinical settings. Application of this novel technology in small-animal imaging and microscopy produces enhanced sensitivity and reliable quantification and resolves multiple simultaneous signals.
Lanlan, Zhou, Wafik S, El-Deiry
openaire   +2 more sources

Lightwave nano-converging enhancement by an arrayed optical antenna based on metallic nano-cone-tips for CMOS imaging detection

open access: yesScientific Reports, 2022
A kind of gold-coated glass nano-cone-tips (GGNCTs) is developed as an arrayed optical antenna for highly receiving and converging incident lightwaves. A local light field enhancement factor (LFEF) of ~ 2 × 104 and maximum light absorption of ~ 98% can ...
Chai Hu   +5 more
doaj   +1 more source

Multispectral metamaterial absorber [PDF]

open access: yesOptics Letters, 2014
We present the simulation, implementation, and measurement of a multispectral metamaterial absorber (MSMMA) and show that we can realize a simple absorber structure that operates in the mid-IR and terahertz (THz) bands. By embedding an IR metamaterial absorber layer into a standard THz metamaterial absorber stack, a narrowband resonance is induced at a
Grant, J.   +3 more
openaire   +2 more sources

Few-Shot Transfer Learning for SAR Image Classification Without Extra SAR Samples

open access: yesIEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2022
Deep learning-based synthetic aperture radar (SAR) image classification is an open problem when training samples are scarce. Transfer learning-based few-shot methods are effective to deal with this problem by transferring knowledge from the electro ...
Yuan Tai   +4 more
doaj   +1 more source

Electrically adjusted infrared transmittance of a functioned silicon via an au nano‐cone metasurface

open access: yesNano Select, 2021
A type of electrically adjusted infrared transmittance material is constructed by an n‐type silicon nano‐cone metasurface coating with a 30 nm thick Au film, and then an Al foil is adhered on the back of the metasurface.
Dong Wei   +7 more
doaj   +1 more source

Cross-Domain Few-Shot Learning Between Different Imaging Modals for Fine-Grained Target Recognition

open access: yesIEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2022
Fine-grained target recognition in synthetic aperture radar (SAR) or infrared imaging modal is an open problem in some application scenarios where training samples are scarce.
Yuan Tai   +3 more
doaj   +1 more source

Depth-of-Field-Extended Plenoptic Camera Based on Tunable Multi-Focus Liquid-Crystal Microlens Array

open access: yesSensors, 2020
Plenoptic cameras have received a wide range of research interest because it can record the 4D plenoptic function or radiance including the radiation power and ray direction.
Mingce Chen   +7 more
doaj   +1 more source

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