Light entering the lower slab of plastic reflects off its upper surface but also passes into the upper slab in spots where there is close contact at the interface. The technique reveals the true contact area between the two slabs, an important parameter in determining friction. (S. Dillavou and S. Rubinstein/Harvard Univ.)
These nanodiscs act as micro-resonators, trapping infrared photons and generating polaritons. When illuminated with infrared light, the discs concentrate light in a volume thousands of times smaller than is possible with standard optical materials, which can be used to detect single biomolecules. (Image courtesy of the Capasso Lab/Harvard SEAS)
NASA's map of the cosmic microwave background. Somewhere in there may be evidence that dark matter carries an electrical charge. [NASA/SCIENCE PHOTO LIBRARY/GETTY IMAGES]
Physicists from Harvard University explore the possibility that dark matter, or a small amount of it, may have an electric charge.
With deep sadness we announce the passing of Richard Wilson, Mallinckrodt Professor of Physics, Emeritus, at 5:30am on May 19, 2018, at the assisted living facility in Needham, MA.
Read the announcement in The Harvard Gazette.
Cora Dvorkin, Shutzer Assistant Professor of Physics, has been elected as 2018-2019 Fellow at the Radcliffe Institue of Advanced Study. During her fellowship year, Prof. Dvorkin will pursue a project called "Probing Fundamental Physics with Cosmological Data Sets."
Fig. 1: Principle of Synchronized Readout (SR) protocol*
It’s not often that you see 50-year-old equipment in a modern physics laboratory, let alone find it at the center of cutting-edge research. But then, most such labs aren’t run by Ronald Walsworth.
A single molecule has been produced in an optical tweezer by a controlled reaction between a single sodium and single cesium atom. Inside a glass cell vacuum apparatus, a laser-cooled cloud of sodium atoms is suspended, allowing a microscope to view the fluorescence from individual atoms trapped side-by-side. Credit: Lee Liu and Yu Liu.
In terms of size, it may be the smallest scientific breakthrough ever made at Harvard.
The copper oxide-based high-temperature superconductors display a mysterious "pseudogap" metal phase at temperatures just above the critical temperature in a regime of low hole density. Extensive experimental and numerical studies have yielded much information on the nature of the electron corrections, but a fundamental theoretical understanding has been lacking.