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33 Current news of Brown University

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Caught in the act: Images capture molecular motions in real time

15-Jul-2019

Researchers have used ultra-high-speed x-ray pulses to make a high-resolution "movie" of a molecule undergoing structural motions. The research, published in Nature Chemistry, reveals the dynamics of the processes in unprecedented detail -- capturing the excitation of a single electron in the ...

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Spaced-out nanotwins make for stronger metals

06-Nov-2018

Researchers from Brown University and the Institute of Metals Research at the Chinese Academy of Sciences have found a new way to use nanotwins -- tiny linear boundaries in a metal's atomic lattice that have identical crystalline structures on either side -- to make stronger metals. The ...

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Brown U. awarded $3.5 million to speed up atomic-scale computer simulations

24-Sep-2018

With a new grant from the U.S. Department of Energy, a Brown University-led research team will use machine learning to speed up atom-level simulations of chemical reactions and the properties of materials. "Simulations provide insights into materials and chemical processes that we can't readily ...

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How order first appears in liquid crystals

24-May-2018

Liquid crystals undergo a peculiar type of phase change. At a certain temperature, their cigar-shaped molecules go from a disordered jumble to a more orderly arrangement in which they all point more or less in the same direction. LCD televisions take advantage of that phase change to project ...

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New theory shows how strain makes for better catalysts

24-Apr-2018

Brown University researchers have developed a new theory to explain why stretching or compressing metal catalysts can make them perform better. The theory could open new design possibilities for new catalysts with new capabilities. Catalysts are substances that speed up chemical reactions. The ...

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New approach to measuring stickiness could aid micro-device design

09-Mar-2018

Brown University engineers have devised a new method of measuring the stickiness of micro-scale surfaces. The technique could be useful in designing and building micro-electro-mechanical systems (MEMS), devices with microscopic moving parts. At the scale of bridges or buildings, the most ...

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3-D-printed biomaterials that degrade on demand

12-Sep-2017

Brown University engineers have demonstrated a technique for making 3-D-printed biomaterials that can degrade on demand, which can be useful in making intricately patterned microfluidic devices or in making cell cultures than can change dynamically during experiments. "It's a bit like Legos," ...

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Researchers develop eco-friendly, 4-in-1 catalyst

26-Apr-2017

Brown University researchers have developed a new composite catalyst that can perform four separate chemical reactions in sequential order and in one container to produce compounds useful in making a wide range of pharmaceutical products. "It normally takes multiple catalysts to carry out all of ...

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Novel quantum state in strange insulating materials revealed

14-Feb-2017

Researchers from Brown University have shown experimentally how a unique form of magnetism arises in an odd class of materials called Mott insulators. The findings are a step toward a better understanding the quantum states of these materials, which have generated much interest among scientists ...

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Research pushes concept of entropy out of kilter

03-Feb-2017

Entropy, the measure of disorder in a physical system, is something that physicists understand well when systems are at equilibrium, meaning there's no external force throwing things out of kilter. But new research by Brown University physicists takes the idea of entropy out of its equilibrium ...

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