Organic semiconductors have attracted extensive attention due to their excellent optical and electronic properties. Here, we present an experimental and theoretical study of Brunel harmonic generation in two types of porphyrin thin films: tetraphenylporphyrin (TPP) and its organometallic complex derivative Zinc tetraphenylporphyrin (ZnTPP). Our results show that the $\pi$-$\pi^\ast$ excitation of ...
We generalize the three-stage process for constructing and enumerating Golay array and sequence pairs given in 2008 by Frank Fiedler et al. [A multi-dimensional approach to the construction and enumeration of Golay complementary sequences, Journal of Combinatorial Theory, Series A 115 (2008) 753-776] to $4^{q}$-QAM constellation based on para-unitary matrix method, which partly solves their open q...
Although plant secondary metabolites are important source of new drugs, obtaining these compounds is challenging due to their high structural diversity and low abundance. The roots of Astragalus membranaceus is a popular herbal medicine worldwide. It contains a series of cycloartane‐type saponins (astragalosides) as hepatoprotective and anti‐virus components. However, astragalosides exhibit compl...
The self supported NiP nanosheet array electrode with enriched P vacancies and atomic level Co doping is achieved by a controlled cation exchange strategy excluding complicated chemical reactions and post treatment steps. Such NiP nanoarray electrode exhibits excellent performance and long term stability (over 500 h) for electrocatalytic water splitting at large current density, outperforming nobl...
Remote Sensing, Vol. 14, Pages 5805: Improved One Stage Detectors with Neck Attention Block for Object Detection in Remote Sensing Remote Sensing doi: 10.3390/rs14225805 Authors: Kaiqi Lang Mingyu Yang Hao Wang Hanyu Wang Zilong Wang Jingzhong Zhang Honghai Shen Object detection in remote sensing is becoming a conspicuous challenge with the rapidly increasing quantity and quality of remote sensing...
It is found that lattice doping by sulfur can promote the surface reconstruction of NiFe layered double hydroxide for enhanced oxygen evolution reaction activity. The enhancement mechanism and adsorption sites are identified.
A dynamic surface reconstruction of oxide electrocatalysts in alkaline media is widely observed especially for layered double hydroxide (LDH), but little is known about how...