Large-Scale Self-Assembly of 3D Flower-like Hierarchical Ni/Co-LDHs Microspheres for High-Performance Flexible Asymmetric Supercapacitors

2016 ◽  
Vol 8 (4) ◽  
pp. 2562-2572 ◽  
Author(s):  
T. Li ◽  
G.H. Li ◽  
L. H. Li ◽  
L. Liu ◽  
Y. Xu ◽  
...  
2019 ◽  
Vol 805 ◽  
pp. 1096-1105 ◽  
Author(s):  
Duanfu Long ◽  
Huanji Liu ◽  
Yuan Yuan ◽  
Jianping Li ◽  
Zhong Li ◽  
...  

Nanophotonics ◽  
2020 ◽  
Vol 10 (2) ◽  
pp. 909-918
Author(s):  
Tongtong Kang ◽  
Zongwei Ma ◽  
Jun Qin ◽  
Zheng Peng ◽  
Weihao Yang ◽  
...  

AbstractActive metasurfaces, in which the optical property of a metasurface device can be controlled by external stimuli, have attracted great research interest recently. For optical switching and modulation applications, high-performance active metasurfaces need to show high transparency, high power efficiency, as well as ultrafast switching and large-scale fabrication capability. This paper reports Au/VO2-based active metasurfaces meeting the requirements above. Centimeter-scale Au/VO2 metasurfaces are fabricated by polystyrene sphere colloidal crystal self-assembly. The devices show optical modulation on-off ratio up to 12.7 dB and insertion loss down to 3.3 dB at 2200 nm wavelength in the static heating experiment, and ΔT/T of 10% in ultrafast pump-probe experiments. In particular, by judiciously aligning the surface plasmon resonance wavelength to the pump wavelength of the femtosecond laser, the enhanced electric field at 800 nm is capable to switch off the extraordinary optical transmission effect at 2200 nm in 100 fs time scale. Compared to VO2 thin-film samples, the devices also show 50% power reduction for all-optical modulation. Our work provides a practical way to fabricate large-scale and power-efficient active metasurfaces for ultrafast optical modulation.


2021 ◽  
Author(s):  
Chongjia Lin ◽  
Yang Li ◽  
Cheng Chi ◽  
Ye Seul Kwon ◽  
Chi Yan Tso ◽  
...  

Abstract Daytime radiative cooling provides an eco-friendly solution to space cooling with zero energy consumption. Despite significant advances, most state-of-the-art radiative coolers show broadband infrared emission with low spectral effectiveness, which limits their cooling temperatures and climate applicabilities, especially in hot humid regions. Here we report an all-inorganic narrowband cooler comprising a solution-derived SiOxNy layer sandwiched between a reflective substrate and a self-assembly monolayer of SiO2 microspheres. It shows a high and diffusive solar reflectance (96%) and strong infrared-selective emittance (94.6%) with superior spectral effectiveness (1.44). Remarkable subambient cooling of up to 5°C was achieved under high humidity without any solar shading or convection cover at noontime in a subtropical coastal city, Hong Kong. Owing to the all-inorganic hydrophobic structure, the emitter showed outstanding resistance to ultraviolet and water in the long-term durability tests. The scalable solution-based fabrication renders this stable high-performance emitter promising for large-scale deployment in various climates.


2019 ◽  
Vol 37 ◽  
pp. 66-72 ◽  
Author(s):  
Jianwei Li ◽  
Dongbin Xiong ◽  
Linzhe Wang ◽  
Maleki Kheimeh Sari Hirbod ◽  
Xifei Li

2017 ◽  
Vol 5 (8) ◽  
pp. 3923-3931 ◽  
Author(s):  
Yongfu Tang ◽  
Shunji Chen ◽  
Teng Chen ◽  
Wenfeng Guo ◽  
Yanshuai Li ◽  
...  

Peanut-like hierarchical MnCO3 microcrystals assembled with floss-like nanowires are synthesized via a hydrothermal process and used as an active material for supercapacitors.


RSC Advances ◽  
2015 ◽  
Vol 5 (128) ◽  
pp. 105820-105824 ◽  
Author(s):  
Jiaolai Jiang ◽  
Shaofei Wang ◽  
Haoxi Wu ◽  
Jing Zhang ◽  
Haibo Li ◽  
...  

A facile and rapid self-assembly method for fabricating a high performance SERS substrate was reported here by using ascorbic acid as an active reagent.


Nano Energy ◽  
2020 ◽  
Vol 67 ◽  
pp. 104270 ◽  
Author(s):  
Ni Luh Wulan Septiani ◽  
Yusuf Valentino Kaneti ◽  
Kresna Bondan Fathoni ◽  
Jie Wang ◽  
Yusuke Ide ◽  
...  

2017 ◽  
Vol 5 (22) ◽  
pp. 11236-11245 ◽  
Author(s):  
Kai Wang ◽  
Jing Yang ◽  
Jixin Zhu ◽  
Le Li ◽  
Ying Liu ◽  
...  

High-performance asymmetric supercapacitor is designed with MoS2–NiO or MoS2–Co3O4 as positive electrode material and MoS2–Fe2O3 as negative electrode material via an easy and large-scale fabrication approach.


Author(s):  
C.K. Wu ◽  
P. Chang ◽  
N. Godinho

Recently, the use of refractory metal silicides as low resistivity, high temperature and high oxidation resistance gate materials in large scale integrated circuits (LSI) has become an important approach in advanced MOS process development (1). This research is a systematic study on the structure and properties of molybdenum silicide thin film and its applicability to high performance LSI fabrication.


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