نتایج جستجو برای: visible light

تعداد نتایج: 452694  

2017
Xiong Pu Mengmeng Liu Xiangyu Chen Jiangman Sun Chunhua Du Yang Zhang Junyi Zhai Weiguo Hu Zhong Lin Wang

Rapid advancements in stretchable and multifunctional electronics impose the challenge on corresponding power devices that they should have comparable stretchability and functionality. We report a soft skin-like triboelectric nanogenerator (STENG) that enables both biomechanical energy harvesting and tactile sensing by hybridizing elastomer and ionic hydrogel as the electrification layer and el...

Journal: :Chemical communications 2015
Yanbin Zhang Rong Qian Xingliang Zheng Yi Zeng Jing Sun Yiyong Chen Aishun Ding Hao Guo

We report herein a visible light induced generation of a carbanion via double-SET and its application in cyclopropanation of alkenes. This new synthetic approach to form cyclopropane derivatives was conducted under mild conditions, using sunlight in open air, showing the features such as environmental benignness and an easy to handle procedure.

Journal: :Molecules 2017
Yuxue Zhou Pengfei Lv Xiangdong Meng Yanping Tang Pingping Huang Xiaobing Chen Xiaoshuang Shen Xianghua Zeng

Two-dimensional thin Bi₂WO₆ nanoplates have been fabricated using a cetyltrimethylammonium bromide (CTAB)-assisted hydrothermal method. We investigated the proposed formation mechanism based on the crystalline structures of the thin Bi₂WO₆ nanoplates. The high adsorption ability and excellent visible-light driven photocatalytic activities of the Bi₂WO₆ nanoplates were illustrated, in view of ex...

2016
John P. Sutter Simon G. Alcock Yogesh Kashyap Ioana Nistea Hongchang Wang Kawal Sawhney

Beam shaping is becoming increasingly important for synchrotron X-ray applications. Although routine for visible light lasers, this is challenging for X-rays due to the limited source coherence and extreme optical tolerances required for the shaping mirrors. In deliberate defocusing, even surface errors <5 nm r.m.s. introduce damagingly large striations into the reflected beam. To counteract su...

Journal: :Optics express 2010
Jianwei Tang Sailing He

A novel ring structure is proposed for double negative NIMs at visible light spectrum with high FOM (e.g. about 11 at a wavelength of 
583 nm) and low loss. Besides the effective medium theory, an equivalent circuit model is also given to explain physically why our novel structure can give double negative behavior with low loss. Adapted from the original ring structure, two other types of struc...

2017
Lanchun Zhang Chuancheng Jia Shuren He Youtao Zhu Yana Wang Zhenhuan Zhao Xiaochun Gao Xiaomei Zhang Yuanhua Sang Dongju Zhang Xiaohong Xu Hong Liu

Hot holes in Pt-Cu alloy clusters can act as catalyst to accelerate the intrinsic aerobic oxidation reactions. It is described that under visible light irradiation the synergistic alcohol catalytic oxidation on Pt-Cu alloy clusters (≈1.1 nm)/TiO2 nanobelts could be significant promoted by interband-excitation-generated long-lifetime hot holes in the clusters.

Journal: :Physical review letters 2013
A R Khorsand M Savoini A Kirilyuk A V Kimel A Tsukamoto A Itoh Th Rasing

We demonstrate the feasibility of element-specific probing of ultrafast spin dynamics in the multisublattice magnet TbFe in the visible spectral range. In particular, we show that one can selectively study the dynamics of Tb and Fe sublattices choosing the wavelength of light below and above 610 nm, respectively. We observe that, despite their antiferromagnetic coupling in the ground state, the...

2014
Yating Zhao Zhe Li Chao Yang Run Lin Wujiong Xia

A mild and efficient methodology for the bromination of phenols and alkenes has been developed utilizing visible light-induced photoredox catalysis. The bromine was generated in situ from the oxidation of Br(-) by Ru(bpy)3 (3+), both of which resulted from the oxidative quenching process.

Journal: :Chemical communications 2011
Cheng Chen Yihua Zhu Hua Bao Jianhua Shen Hongliang Jiang Liming Peng Xiaoling Yang Chunzhong Li Guorong Chen

An ethanol-assisted method is utilized to generate a robust gelated crystalline colloidal array (GCCA) photonic crystal sensor. The functionalized sensor efficiently diffracts the visible light and responds to various stimuli involving solvent, pH, cation, and compressive strain; the related color change can be easily distinguished by the naked eye.

Journal: :Chemical communications 2012
Andrew M Schultz Paul A Salvador Gregory S Rohrer

The visible light photochemical reactivity of a 50 nm thick α-Fe(2)O(3)(0001) (hematite) film on a SrTiO(3)(111) substrate is compared to the reactivities of bulk hematite and the same film supported by α-Al(2)O(3)(0001). The hematite film supported by SrTiO(3)(111) is far more reactive then the other two cases.

نمودار تعداد نتایج جستجو در هر سال

با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید