Two recent publications involving neutron scattering experiments performed at the NIST Center for Neutron Research have been highlighted in the 2015 NCNR Annual Report. The studies, involving a multi-disciplinary collaboration between CNAM members J. Paglione (physics), E.E. Rodriguez (chemistry) and NIST Fellow J.W. Lynn, are focused on superconductivity and magnetism in iron-based materials and the half-Heusler ternary system.

S. James Gates Jr. speaks during a panel at the U.S. News STEM Solutions Conference.

The idea of a pump is at least as old as the ancient Greek philosopher and scientist Archimedes. More than 2000 years ago, Archimedes allegedly invented a corkscrew pump (link is external) that could lift water up an incline with the turn of a handle. Versions of the ancient invention still bear his name and are used today in agriculture and industry.

Modern pumps have achieved loftier feats. For instance, in the late 1990s, NIST developed a device that could pump individual electrons, part of a potential new standard for measuring capacitance (link is external).

While pumps can be operated mechanically, electrically or via any other source of energy, they all share the common feature of being driven by a periodic action. In the Archimedean pump, that action is a full rotation of the handle, which draws up a certain volume of water. For the NIST electron pump, it is a repeating pattern of voltage signals, which causes electrons to hop one at a time between metallic islands.

But physicists have sought for decades to build a different kind of pump—one driven by the same kind of periodic action but made possible only by the bizarre rules of quantum mechanics. Owing to their physics, these pumps would be immune to certain imperfections in their fabrication.

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Sydney Robinson, a rising junior double majoring in physics and French, was awarded the U.S. Department of State Critical Language Scholarship (CLS) to study abroad. The competitive program provides fully funded, group-based intensive language instruction and structured cultural enrichment experiences over a period of seven to 10 weeks.

Robinson will travel to Lucknow, India, to study Urdu, a language spoken in northern India and Pakistan. Robinson hopes to build new relationships, experience a new culture and connect with family members.

“I think the most important part of adapting to new cultures and situations is to ask questions and be open to whatever answers you may receive, even if they are not what you expected,” says Robinson.

With language skills in English, French and Urdu, Robinson hopes to facilitate a research and training exchange between students at the National Centre for Physics in Pakistan and students at CERN, the European Organization for Nuclear Research, headquartered in Switzerland.

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University of Maryland Gemstone Team TESLA had a very successful time at the 2016 IEEE Wireless Power Transfer Conference May 5-6, 2016 in Aveiro, Portugal. This international conference brought together the leading experts in the emerging technology of providing wireless power to everything from TV remotes and cell phones to electric vehicles. Three of the 10 team members are physics majors: Scott Roman, Tyler Grover and Ben Philip. Roman and Frank Cangialosi represented the team at the conference. Both gave invited talks, and with their mentor Steven M. Anlage, presented a poster on their concept for a wireless power transfer system based on time-reversed electromagnetic waves. Anlage, a Professor of Physics, a member of CNAM and a Faculty Affiliate in ECE, was recently named a UMD Distinguished Scholar-Teacher.

Gemstone Team TESLA has spent the last three years investigating basic questions related to a radical new method to deliver wireless power to devices in an enclosed environment. Their idea is to harness the time-reversal properties of wave propagation to deliver microwave energy to a precise location in space. This energy is then rectified and used to power the device. Team TESLA has carried out a series of experiments and simulations to show that this technology is feasible, and they have developed new ideas to overcome some of the challenges that the technology faces.

The talks (and associated papers and US patent applications) were:

Time Reversed Electromagnetic Wave Propagation as a Novel Method of Wireless Power Transfer, by Frank Cangialosi, Tyler Grover, Patrick Healey, Tim Furman, Andrew Simon, Steven M. Anlage. This work has resulted in an invention disclosure PS-2016-011 made to the UMD Office of Technology Commercialization on 14 February, 2016. “Method of Delivering Power to a Moving Target Wirelessly via Electromagnetic Time Reversal”. A provisional US Patent Application was filed on 25 April, 2016, Application No.: 62/327,346.

Selective Collapse of Nonlinear Time Reversed Electromagnetic Waves, by Scott Roman, Rahul Gogna, Steven Anlage. This work has resulted in an invention disclosure PS-2016-012 made to the UMD Office of Technology Commercialization on 14 February, 2016. “Selective Collapse of Nonlinear Time Reversed Electromagnetic Waves”. A provisional US Patent Application was filed on 25 April, 2016, Application No.: 62/327,349.

The poster presentation was entitled Time-Reversed Electromagnetic Wave Propagation as a Novel Method of Wireless Power Transfer, by Frank Cangialosi, Anu Challa, Tim Furman, Tyler Grover, Patrick Healey, Ben Philip, Scott Roman, Andrew Simon, Liangcheng Tao, and Alex Tabatabai. The associated paper won the Best Paper Award for the entire conference (about 200 submissions). The award includes a framed certificate, a book from Cambridge University Press, and a €400 cash award.