Amorphous oxide semiconductor (AOS) field-effect phototransistors (FEPTs) are promising candidates for emerging photodetectors. Unfortunately, traditional lateral AOS FEPTs suffer from low photosensitivity, slow response time and inadequate mechanical flexibility, which restrict their widespread commercial application. In this work, novel AOS-based vertical phototransistor (VFEPT) arrays presented, where the semiconducting layer source drain electrodes deposited by inkjet printing....

Abstract Silicon-based photonic integration has attracted the interest of semiconductor scientists because it high luminous efficiency and electron mobility. Breakthroughs have been made in silicon-based integrated lasers over past few decades. Here we review three main methods III–V materials on Si, namely direct growth, bonding, selective-area hetero-epitaxy. The introduced mainly include such as GaAs InP. are related communication bands. We also advantages challenges methods.

InGaAs/InP multi-quantum-well nanowires were directly grown on the v-groove-patterned SOI substrate by metal organic chemical vapor deposition. The surface morphology of nanowires, thickness quantum wells, and photoluminescence spectra characterized scanning electron microscope, transmission microscopy, micro-photoluminescence, respectively. We found in experiments that work removing part top Si both sides nanowire to further reduce optical leakage loss could be completed perfectly without...

We report the optical pumped InGaAs/InP MQW nanolasers directly grown on SOI substrate after etching away part top Si both sides of nanowires to reduce leakage loss.

To lighten and stiffen the structural components used in automobile bodies, variable curvature local-induction-heating bending forming (VC-LIHBF) technology was developed. However, few studies have been conducted on optimization of geometric parameters inductor LIHBF process. This paper focuses improvement cross-sectional distortion limit thin-walled rectangular steel tubes (TWRSTs) without mandrel support. In this work, a coupled thermo-mechanical finite element analysis (FEA) method is...

A two-dimensional scanning optical phased array can easily achieve a circular range of 51.84°, 81.6% emission efficiency and 29.7dB back suppression ratio at 1550nm by adopting high contrast grating (HCG) antenna.

To construct functional photonic integrated circuits, an efficient and compact laser is expected to be incorporated into the complementary metal–oxide–semiconductor platform. Monolithic integration of III–V lasers on pre-patterned Si substrates by aspect ratio trapping method a promising solution. Here, microwires with reversed ridge waveguides (RRWs) were reported. By metal–organic chemical vapor deposition, high-quality InP RRWs obtained, InGaAs/InGaAsP multi-quantum-well structures...

Gas sensing for measurement of gas components, concentrations, and other parameters plays an important role in many fields. In this Letter, a micro-ring resonator laser used is experimentally demonstrated. The multi-quantum-wells based on whispering-gallery modes with annular output waveguide was fabricated. A single-mode wavelength 1746.4 nm fabricated the first time, to best our knowledge, experimentally. power 1.65 mW under 40 mA injection current obtained side-mode suppression ratio over 33 dB.

A two-dimensional scanning optical phased array can easily achieve a circular range of 51.84 °, 81.6% emission efficiency and 29.7dB back suppression ratio at 1550nm by adopting high contrast grating (HCG) antenna.

Wideband LFM signals are widely used in phased array radar systems. When the instantaneous bandwidth is large, requirements on amplitude and phase-frequency characteristics of system difficult to meet. In this paper, model phase distortion discussed using Paired Echoes Theory Stationary Phase Principle. Then its influence one-dimensional range profile imaging analyzed, he validity theoretical analysis verified by numerical experiments. Also, considering characteristic that there many modules...

Abstract A wide wavelength tuning range and single-mode hybrid cavity laser consists of a square Whispering-Gallery (WG) microcavity Fabry–Pérot (FP) was introduced demonstrated. over 12.5 nm from 1760.87 to 1773.39 which emitting obtained with the side-mode suppression ratio 30 dB. The does not need grating etching special epitaxial structure, reduces fabrication difficulty cost, shows potential for gas sensing absorption lines in this range.

Abstract Background: With the popularization of HRCT and VATS, incidence early stage lung cancer is increasing recent years. About 63% small pulmonary nodules can not be accurately identified in VATS. We use 3-D reconstruction combined with dial positioning to analyze its accuracy impact on patients undergoing VATS our hospital.Materials result: From September 2019 December 2020, 74 underwent nodule resection institute, an average age (56.4 ± 11.7) years old. A total 83 were resected...

A multi-quantum-wells micro-ring laser based on whispering-gallery modes (WGMs) was fabricated and a single-mode lasing obtained for the first time at 1766 nm under condition of 288 K, which showed potential HCl NO gas sensing.

The In1−xGaxAsyP1−y submicron wires with adjustable wavelengths directly grown by metalorganic chemical vapor deposition on a V-groove-patterned Si (001) substrate are reported in this paper. To ensure the material quality, aspect ratio trapping and selective area growth methods used. By changing parameters epitaxy process, we realize adjustment of energy band wires. further optimizing conditions, high-quality morphology is characterized scanning electron microscopy transmission microscopy....

Abstract Background We used pericardioscope operation for a patient who suffered from subacute hemorrhagic pericarditis which usually have to had sternotomy. Case presentation A was in the rather than sternotomy on 66-year-old male diagnosed with after PCI(Percutaneous Coronary Intervention). He discharged 7 days an uneventfull postoperative course. Conclusions believe that this technique is safe procedure without any major complications.

For constructing functional photonic integrated circuits, it is expected to incorporate an efficient and compact laser source into the complementary metal-oxide-semiconductor platform. Monolithic integration of III-V submicron lasers on patterned SOI substrates by means aspect ratio trapping method a promising solution. Here, we have designed with reversed ridge waveguides Si/SOI three dimensional finite difference time domain simulation, effectively confining light without removing top Si...