scholarly journals Allylation of Aldehyde and Imine Substrates with In Situ Generated Allylboronates - A Simple Route to Enatioenriched Homoallyl Alcohols

2005 ◽  
Vol 2005 (12) ◽  
pp. 2539-2547 ◽  
Author(s):  
Sara Sebelius ◽  
Kálmán J. Szabó
Keyword(s):  
Simple Route

scholarly journals Colorless-to-colorful switching of electrochromic MXene by reversible ion insertion

Nano Research ◽  
2021 ◽  
Author(s):  
Jianxia Jiang ◽  
Leiqiang Qin ◽  
Joseph Halim ◽  
Per O. Å. Persson ◽  
Lintao Hou ◽  
...  
Keyword(s):  
Spin Coating ◽  
High Performance ◽  
Quartz Crystal ◽  
Contrast Ratio ◽  
Visible Region ◽  
Electrochemical Quartz Crystal Microbalance ◽  
Smart Windows ◽  
Simple Route ◽  
Coating Method

AbstractElectrochromic (EC) materials that change color with voltage have been widely studied for use in dynamic windows. However, colorless-to-colorful switching with high contrast ratio is generically unattainable, especially for colorless-to-black electrochromic materials with an ultrahigh contrast ratio over the entire visible region. In this work, we developed Nb1.33C MXene-based dynamic windows with colorless-to-black switching of up to 75% reversible change in transmittance from 300 to 1,500 nm. By exploring the electrochromic effects of different electrolytes through in situ optical changes and electrochemical quartz crystal microbalance (EQCM), it is found that electrochromic behavior is greatly influenced by the extent of reversible Li+ insertion/deinsertion between the two-dimensional Nb1.33C MXene nanosheets. In addition, a colorless-to-black EC device based on Nb1.33C with an overall integrated contrast ratio over 80% was successfully constructed by a solution-processable spin coating method. This work enables a simple route to fabricate MXene-based high-performance electrochromic smart windows, which is important for further expanding the application of MXenes to optoelectronic and photonic applications.

A simple route to transform normal hydrophilic cloth into a superhydrophobic–superhydrophilic hybrid surface

2014 ◽  
Vol 2 (21) ◽  
pp. 7845-7852 ◽  
Author(s):  
Ben Wang ◽  
Yabin Zhang ◽  
Weixin Liang ◽  
Guiyuan Wang ◽  
Zhiguang Guo ◽  
...  
Keyword(s):  
Growth Process ◽  
Simple Route ◽  
Co Nanoparticles

By utilizing the selective modification of n-octadecyl thiol for the Fe and Co nanoparticles, we fabricated superhydrophobic–superhydrophilic hybrid fabrics by a simple in situ growth process.

In Situ Tailor-Made Additives for Molecular Crystals: A Simple Route to Morphological Crystal Engineering

2016 ◽  
Vol 16 (7) ◽  
pp. 3555-3561 ◽  
Author(s):  
Seung-Heon Lee ◽  
Gyeong-Hui Lee ◽  
Kang-Hyun Lee ◽  
Mojca Jazbinsek ◽  
Bong Joo Kang ◽  
...  
Keyword(s):  
Crystal Engineering ◽  
Molecular Crystals ◽  
Simple Route

Rendez vous with Saturn's rings

1984 ◽  
Vol 75 ◽  
pp. 743-759 ◽  
Author(s):  
Kerry T. Nock
Keyword(s):  
Solar Energy ◽  
Electric Propulsion ◽  
Power Source ◽  
Propulsion System ◽  
Low Thrust ◽  
Ring Plane ◽  
The Earth ◽  
Total Impulse ◽  
Saturn's Rings

ABSTRACTA mission to rendezvous with the rings of Saturn is studied with regard to science rationale and instrumentation and engineering feasibility and design. Future detailedin situexploration of the rings of Saturn will require spacecraft systems with enormous propulsive capability. NASA is currently studying the critical technologies for just such a system, called Nuclear Electric Propulsion (NEP). Electric propulsion is the only technology which can effectively provide the required total impulse for this demanding mission. Furthermore, the power source must be nuclear because the solar energy reaching Saturn is only 1% of that at the Earth. An important aspect of this mission is the ability of the low thrust propulsion system to continuously boost the spacecraft above the ring plane as it spirals in toward Saturn, thus enabling scientific measurements of ring particles from only a few kilometers.

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