Generally, a superconducting nanowire single-photon detector (SNSPD) is composed of wires with a typical width of ~100 nm. Recent studies have found that superconducting stripes with a micrometer-scale width can also detect single photons. Compared with the SNSPD, the superconducting microstrip single-photon detector (SMSPD) has smaller kinetic inductance, higher working current, and lower requirement in fabrication accuracy, providing potential applications in the development of ultra-large active area detectors. However, the study on SMSPD is still in its infancy, and the realization of its highperformance and practical use remains an opening question. This study demonstrates a NbN SMSPD with a saturated system detection efficiency (SDE) of ~92.2% at a dark count rate of ~200 cps, a polarization sensitivity of ~1.03, and a timing jitter of ~48 ps, at the telecom wavelength of 1550 nm when coupled with a single mode fiber and operated at 0.84 K. Furthermore, the detector's SDE is over 70% when operated at a 2.1-K closed-cycle cryocooler.

Fluorocarbon (FC) coatings are applied to poly(ethylene terephthalate) (PET) fabrics by ion beam sputtering of polytetrafluoroethylene (PTFE) under different conditions. The range of the adhesion work of the coated fabrics is 5-75 10-3N.M-1 . After a washing and wearing test, most of the original coating grains remain on the fabrics, exhibiting good hydrophobicity. From XPS and ATR-FTIR analysis and property experiments, the adhesion work decreases with increasing energy due to increased fluorine content in the coatings, while it basically increases with increasing pore diameter and porosity of the specimens, probably due to the decrease in the real water-coating contact areas and roughness. For most of the just-coated specimens, no yellowing is observed due to high fluorine content. The coated fabric generally exhibits the original moisture permeability of the uncoated fabric because the PC coating covers only the fiber surfaces and most of the original pores in the fabrics remain.

Large-scale few-layer MoS2 nanosheets have been fabricated via a simple hydrothermal route using molybdenum powder as precursors. The as-prepared MoS2 samples were characterized by X-ray powder diffraction (XRD) analysis, transmission electron microscopy (TEM), and Raman and photoluminescence (PL) spectral analyses at room temperature. The results confirm that the as-prepared MoS2 displays a sheet-like morphology with a thickness of few (bi- to tri-) layers. Electrochemical measurements showed that the as-prepared few-layer MoS2 exhibited the highest reversible capacity of 1127 mAh g−1 and a stable reversible capacity of 1057 mAh g−1 after 30 cycles.