Results 101 to 110 of about 48,622 (298)
Correction of Aero-Optical Effect with Blow–Suction Control for Hypersonic Vehicles
Applied SciencesHigh-speed turbulence induces significant aero-optical effects that severely disrupt the functionality of imaging systems of hypersonic vehicles. In this study, the aero-optical correction of various jet cooling modes is investigated using a Terminal ...
Yubo Li +3 more
doaj +1 more source
Diamond Metasurface‐Based Optical Tweezers With Enhanced Robustness
Advanced Science, EarlyView.Conventional metasurface optical tweezers are hindered by thermal instability from laser heating. This work overcomes this by using diamond metasurfaces, exploiting their low thermo‐optic coefficient and minimal thermal expansion. The platform demonstrates stable particle trapping, translocation, and rotation, enabling robust miniaturized systems for ...
Jing‐Yuan Zhu +8 more
wiley +1 more source
Wavefront error sensing for LDR [PDF]
Wavefront sensing is a significant aspect of the LDR control problem and requires attention at an early stage of the control system definition and design.
Glavich, T. A., Tubbs, Eldred F.
core +1 more source
Advanced Science, EarlyView.A large‐aperture, high focusing efficiency and polarization‐independent THz single‐layer achromatic metalens is reported via discrete multi‐wavelength achromatic design and global optimization algorithm. The fabricated metalens exhibits a largest diameter of 2.21 cm, excellent achromatic performance, extremely high average focusing efficiency (> 46 ...
Xiaoqiang Jiang +6 more
wiley +1 more source
Journal of the European Optical Society-Rapid PublicationsIn this work, we show the design and implementation of wavefront sensing with a self-referencing interferometer (SRI). The SRI is developed to aid adaptive optics (AO) control, via deformable mirrors, in correcting wavefront error from atmospheric ...
MacGillivray Alexander C. +5 more
doaj +1 more source
Speckle Control with a remapped-pupil PIAA-coronagraph
, 2012 The PIAA is a now well demonstrated high contrast technique that uses an intermediate remapping of the pupil for high contrast coronagraphy (apodization), before restoring it to recover classical imaging capabilities.
Belikov R. +10 more
core +2 more sources
Deep Volumetric Super‐Resolution Imaging in Thick Biological Specimens With Sparse Scanning SIM
Advanced Science, EarlyView.Sparse scanning structured illumination microscopy (SS‐SIM) extends the axial depth in super‐resolution fluorescence imaging by combining rapid laser scanning, pixel‐addressed intensity modulation, and sCMOS camera detection. SS‐SIM yields 1.6× lateral and 1.7× axial resolution gains over wide‐field microscopy and enables imaging through 300–600 µm ...
Sha An +8 more
wiley +1 more source
Wavefront Control with Nanohole Array-Based Out-of-Plane Metasurfaces. [PDF]
ACS Appl Nano Mater, 2021 Habib M +4 more
europepmc +1 more source
Advanced Electronic Materials, EarlyView.A diagnostic method for reconfigurable intelligent surfaces (RIS) based on non‐uniform space‐time‐coding modulation is presented. Fault localization is achieved via amplitude‐only spectral measurements, eliminating the need for complex signal processing. A one‐to‐one mapping between harmonic components and RIS elements enables accurate detection.
Xiao Qing Chen +8 more
wiley +1 more source
Spectral Response and Wavefront Control of a C-Shaped Fractal Cadmium Telluride/Silicon Carbide Metasurface in the THz Bandgap. [PDF]
Materials (Basel), 2022 Bărar A, Dănilă O.
europepmc +1 more source