Results 111 to 120 of about 1,581,787 (389)
Miniaturized Single‐Photon Level Computational Complex Field Imaging System via Meta‐Optics
Advanced Optical Materials, EarlyView.8192 Hadamard mask patterns generated by the digital micromirror device (DMD) are projected onto a micro target sample via a metalens. The corresponding modulated intensity spectrum encoded with the spatial information of the target is then captured by a photomultiplier tube (PMT) at the Fourier plane to recover both the amplitude and phase images ...
Yuhao Wang +10 more
wiley +1 more source
OPEX: (Olympus Propagation EXperiment) [PDF]
The Olympus-1 satellite carries four distinct payloads for experimental utilization and research in the field of satellite communications: (1) the Direct Broadcasting Service (DBS) payload; (2) the Specialized Services Payload; (3) the 20/30 GHz Advanced
Brussaard, Gert
core +1 more source
Advanced Optical Materials, EarlyView.This study explores overlapping charge transport mechanisms in TADF materials and identifies spin‐orbit coupling as the dominant mechanism for triplet‐to‐singlet transition in carbazole‐based cyanoarene emitters. Computational investigations reveal a second spin‐orbit‐coupling‐mediated reverse intersystem crossing pathway, significantly enhancing the ...
Annika Morgenstern +13 more
wiley +1 more source
Advanced Optical Materials, EarlyView.We demonstrate single‐layer titanium dioxide Janus metasurface holograms that achieve directionally asymmetric imaging under forward and backward illumination. By integrating the Dammann grating principle with precise phase control, our design produces high‐fidelity holographic images for arbitrary polarization states at 532 nm, simplifying fabrication,
Yu‐Chuan Chang +6 more
wiley +1 more source
Conceptual design of a synchronous Mars telecommunications satellite [PDF]
Future missions to Mars will require a communications system to link activities on the Martian surface with each other and with mission controllers on Earth.
Badi, Deborah M. +3 more
core +1 more source
Advanced Optical Materials, EarlyView.This study presents printed image‐integrated smart windows that simultaneously control color and transmittance using electrochromic polymer‐dispersed liquid crystals (ECPDLCs). By optimizing the electrochromic LC composition and refining the drop‐on‐demand printing process, precise image integration and dynamic optical control are achieved.
Jun‐Seok Ma +13 more
wiley +1 more source
Sensors, 2016 With the increasing demands for better transmission speed and robust quality of service (QoS), the capacity constrained backhaul gradually becomes a bottleneck in cooperative wireless networks, e.g., in the Internet of Things (IoT) scenario in joint ...
Yuan Gao +8 more
doaj +1 more source
Secure voice for mobile satellite applications [PDF]
The initial system studies are described which were performed at JPL on secure voice for mobile satellite applications. Some options are examined for adapting existing Secure Telephone Unit III (STU-III) secure telephone equipment for use over a digital ...
Berner, Jeff, Vaisnys, Arvydas
core +1 more source
Advanced Optical Materials, EarlyView.A conjugated oligoelectrolyte (COE) ligand enhances the photoluminescence, stability, and charge transport properties of CsPbBr3 perovskite nanocrystals. The dicationic COE facilitates strong surface coordination and effective defect passivation, leading to improved exciton binding energy, while COE‐assisted energy funneling further boosts luminescence.
Jung Min Ha +10 more
wiley +1 more source