Physics

Optical microscopy enters a new phase: 3D measurement through tomographic bright field imaging

(Phys.org)—A widely-used tool for studying cellular structure – indeed, a technique in use throughout biology – phase contrast microscopy converts optical phase shifts to changes in brightness. At the same time, several issues in phase contrast microscopy – including reliance on custom instrumentation, the considerable costs of phase contrast condensers and objective lenses, complex analytics, and disruptive sample perturbations – have constrained its application to studying cellular refractive index and dry mass density.

Higgs boson: landmark announcement clears key hurdle

The announcement two months ago that physicists have discovered a particle consistent with the famous Higgs boson cleared a formal hurdle on Monday with publication in a peer-reviewed journal.

Landmark papers on the Higgs boson published

Physics Letters B, Elsevier's flagship journal in high energy physics, announced today that the observations of the long-sought Higgs particle, hailed as one of the greatest scientific discoveries of all time, have been published.

Nano-velcro clasps heavy metal molecules in its grips

Researchers have devised a simple, system based on nanoparticles, to detect mercury as well as others pollutants. This technology makes it possible to easily and inexpensively test for these substances in water and, importantly, also in the fish that we eat.

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