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IMAGE: a, the raw SREF spectrum of Rh800 nitrile mode acquired by conventional SREF excitation (red curve) and corresponding background-free FM-SREF spectrum acquired by FM-SREF excitation. b, the FM-SREF imaging and. view more
Credit: by Hanqing Xiong†, Naixin Qian†, Yupeng Miao, Zhilun Zhao, Chen Chen, Wei Min.
It has been a long pursuit to develop super-resolution imaging techniques for Raman microscopy, which has intrinsic advantages of chemical specificity over the fluorescence counterpart. Despite the perceived importance and extensive research efforts, true super-resolution (defined as diffraction-unlimited) Raman imaging of biological systems in the optical far-field remains challenging due to the deficiency in sensitivity for conventional Raman scattering. Consequently, those reported super-resolution vibrational imaging methods have to base on excitation saturating, depleting, or high-order nonlinearity of the Raman transitions. These require extr
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IMAGE: Ultra-High Proton Conduction via Extended Hydrogen-Bonding Network in Polyoxometalate-based Framework Functionalized with Lanthanide Ion view more
Credit: Sayaka Uchida, The University of Tokyo
Protons are the next big thing when it comes to fuel cell technology. The subatomic exchange produces power on a scale that challenges contemporary solid-state fuel cell technology, used to help power space shuttles. To realize the proton-based technology sooner, an international team of researchers have developed a hybrid material that effectively transports protons at high temperatures and humidity two major challenges in past attempts.
The results were published on April 19 in
ACS Applied Materials & Interfaces, a journal of the American Chemical Society.
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IMAGE: Scenarios for the trajectories of droplets at three different inclination angles, where the cases predicted with accounting for the interactions with the vortex ring are shown in red, and those. view more
Credit: Gen Li, Nathaniel Sliefert, James B. Michael, and Alexander L. Yarin
WASHINGTON, April 20, 2021 In 2009, music producer Phil Spector was convicted for the 2003 murder of actress Lana Clarkson, who was shot in the face from a very short distance. He was dressed in white clothes, but no bloodstains were found on his clothing even though significant backward blood spatter occurred.
How could his clothing remain clean if he was the shooter? This real-life forensic puzzle inspired University of Illinois at Chicago and Iowa State University researchers to explore the fluid physics involved.
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IMAGE: Induced droplet bag breakup at ~40 milliseconds after bullet impact due to muzzle gas influence. Time instants are shown in a-d, depicting the global backspatter with a magnified view of. view more
Credit: Gen Li, Nathaniel Sliefert, James B. Michael, and Alexander L. Yarin
WASHINGTON, April 20, 2021 Forensic science includes the analysis of blood backspatter involved in gunshot wounds, but scientific questions about the detailed role of fluids in these situations remained unresolved.
To search for answers about how blood droplets from a gunshot wound can reverse direction while in flight, University of Illinois at Chicago and Iowa State University researchers explored the influence of propellant gases on blood backspatter.