Abstract In this work, the integration of in situ fabricated perovskite quantum dots embedded composite films (PQDCFs) as downshifting materials is first reported for enhancing ultraviolet (UV) response silicon (Si) photodetectors toward broadband and solar‐blind light detection. External efficiency measurements show that UV PQDCF coated Si photodiodes greatly improves from near 0% to at most 50.6% ± 0.5% @ 290 nm. As compared calculated maximum value 87%, coupling integrated device...

Expansive soil covers the vast area of Mengzi, Yunnan, China, and creates numerous hazards for construction projects. When treating expansive soil, a modifier is usually added to inhibit its expansion increase strength. Lignin derivatives can better meet requirements treatment have become preferred choice replace traditional inorganic modifiers. green environmentally friendly physical improvement material. In this study, lignin was used improve alone combined with derivatives, mechanical...

Abstract Hydrophobically modified hydroxyethyl cellulose (BD‐HAHEC) was synthesized by the macromolecular reaction of (HEC) with bromododecane (BD). Study effects polymer concentration, shear rate, temperature, and electrolytes on rheological behavior BD‐HAHEC indicated that polymers had high viscosity, excellent viscosity retention in brine water, good thermal stability, surface activity. Furthermore, investigation micromorphology solutions revealed close relationship a hydrophobically...

A novel neodymium porphyrin [Nd(TPPS)][Formula: see text]•[Formula: text]H[Formula: text]O (1) [H[Formula: text]TPPS [Formula: text] tetra(4-sulfonatophenyl)porphyrin] has been prepared through a solvothermal reaction and characterized by the X-ray single-crystal diffraction technique. Complex 1is crystallized in text]4/mcc space group of tetragonal system. 1 features three-dimensional (3D) open framework with pore size channels being 6.9 × 8.2 text]. wide optical band gap 4.98 eV is...

A gradient-index Reuleaux-triangle-shaped hole array was fabricated on germanium (Ge) by nanoimprint lithography and inductively coupled plasma processing as a broadband mid-infrared (IR) antireflective surface. The interaction between the {111} planes of cubic crystalline Ge circular mold successfully produced an orderly periodically distributed array. As result, average transmittance increased 15.67% over waveband at 3–12 μm remained stable incidence angle up to 60°. vertices Reuleaux...

A passive, millimeter wave (MMW) and terahertz (THz) dual-band imaging system composed of 94 250 GHz single-element detectors was used to investigate preprocessing fusion algorithms for images. Subsequently, an MMW THz image integrated algorithm (MMW-THz IPFIA) developed. In the algorithm, a block-matching three-dimensional filtering denoising is employed filter noise, adaptive histogram equalization enhance images, intensity-based registration register wavelet-based fuse preprocessed The...

A infrared light trapping structure combining front subwavelength gratings and rear ZnO:Al nanoparticles for a PtSi Schottky-barrier detector over 3–5 μm waveband is theoretically investigated. By selecting the proper plasmonic material optimizing parameters proposed structure, absorption of layer dramatically improved. The theoretical results show that this improvement eventually translates into an equivalent external quantum efficiency (EQE) enhancement 2.46 times at 3–3.6 2.38 3.6–5...

We present an aluminum (Al) laminated nanostructure stacked on a glass substrate to produce highly transmitted narrowband ultraviolet (UV) filters. The was mainly composed of Al nanohole array, and each had coaxial nanoring at the bottom. This UV filter showed single dominant peak with high transmission over 50% narrow bandwidth less than 80 nm in 200-400 waveband that achieved based synergy surface plasmon resonance (SPR) localized (LSPR). electric field profiles indicate SPR selects...

A shape-changing table-top display with haptic feedback allows its users to perceive 3D visual and texture displays interactively. Since few existing devices are developed as accurate regulatory feedback, a novel attentive immersive shape changing mechanical interface (SCMI) consisting of image processing unit transformation was proposed in this paper. In order support precise an offset less than 2 mm, custommade mechanism form surface regulate the force. The capable extracting data from 2D...

Perovskite quantum dots embedded composite film (PQDCF) exhibits strong photoluminescence emissions and is expected to be excellent down-shifting material for enhancing ultraviolet (UV) response of silicon devices. In this work, light conversion process analyzed by combining the experiments with Monte-Carlo ray-trace simulation. Results show that external efficiency (EQE) in UV region was mainly determined absorption loss match peak wavelength. Moreover, resolution correlated thickness...

Silicide Schottky-barrier midwave infrared detectors for the 3 to 5 μm waveband typically use a 2 8 nm metal-silicide layer grown on silicon substrates as an absorption layer. We demonstrate of SiO2-film-coated subwavelength grating antireflection incident plane in such enhance at improving external quantum efficiency (EQE). Taking PtSi/p-Si structure example, we fabricate samples and build test platform characterize EQE detector. Simulation results show that low reflection (<9%)...

Compared with microwave, THz has higher resolution, and compared infrared, better penetrability. Human body radiate also, its photon energy is low, it harmless to human body. So great potential applications in the searching system. Dual-band images may contain different information for same scene, so dual-band imaging have been a significant research subject of technology. Base on passive system which composed 94GHz 250GHz cell detector, this paper researched preprocessing fusion algorithm...

Quantum dots have been considerred to be suitable candidates for down-shifting applications. The integration of quantum with Si photodetector provide low cost method extend the reponse in UV region. However, lack processing technique reduce reposne visible In this work, we firstly report in-situ fabricated perovskite embedded composite films (PQDCF) as materials enhancing ultraviolet (UV) response silicon (Si) photodetectors toward broadband and solar-blind light detection. External...

3D I/O devices, long awaited in Computer Aided Design (CAD) systems, are finally available as force feedback devices such PHANToM (SensAble Technologies, Inc.). This paper presents Feature Based Haptic Rendering (FBR), which provides haptic of a more accurate shape required by the man-machine interface for surface CAD than intermediate representation (IR) [1][2]. Fig. 1 shows FBR architecture. Virtual modelling process is connected to rendering loop using single asynchronous TCP/IP socket...

Existing catadioptric panoramic depth estimation systems usually require two imaging subsystems to achieve binocular disparity. The system structures are complicated and only sparse maps can be obtained. We present a novel monocular method that achieves dense of scenes using single unmodified conventional system. Caustics model the reflection curved mirror establish distance relationship between virtual real overcome nonlinear problem mirror. Virtual scene is then obtained by applying our...