future of physics

Rice physicist earns $15.5M grant from DOE for ground-breaking research

The work is "poised to revolutionize our understanding of fundamental physics," according to Rice University. Photo via Rice.edu

A team of Rice University physicists has been awarded a prestigious grant from the Department of Energy's Office of Nuclear Physics for their work in high-energy nuclear physics and research into a new state of matter.

The five-year $15.5 million grant will go towards Rice physics and astronomy professor Wei Li's discoveries focused on the Compact Muon Solenoid (CMS), a large, general-purpose particle physics detector built on the Large Hadron Collider (LHC) at CERN, a European organization for nuclear research in France and Switzerland. The work is "poised to revolutionize our understanding of fundamental physics," according to a statement from Rice.

Li's team will work to develop an ultra-fast silicon timing detector, known as the endcap timing layer (ETL), that will provide upgrades to the CMS detector. The ETl is expected to have a time resolution of 30 picoseconds per particle, which will allow for more precise time-of-flight particle identification.

This will also help boost the performance of the High-Luminosity Large Hadron Collider (HL-LHC), which is scheduled to launch at CERN in 2029, allowing it to operate at about 10 times the luminosity than originally planned. The ETL also has applications for other colliders apart from the LHC, including the DOE’s electron-ion collider at the Brookhaven National Laboratory in Long Island, New York.

“The ETL will enable breakthrough science in the area of heavy ion collisions, allowing us to delve into the properties of a remarkable new state of matter called the quark-gluon plasma,” Li explained in a statement. “This, in turn, offers invaluable insights into the strong nuclear force that binds particles at the core of matter.”

The ETL is also expected to aid in other areas of physics, including the search for the Higgs particle and understanding the makeup of dark matter.

Li is joined on this work by co-principal investigator Frank Geurts and researchers Nicole Lewis and Mike Matveev from Rice. The team is collaborating with others from MIT, Oak Ridge National Lab, the University of Illinois Chicago and University of Kansas.

Last year, fellow Rice physicist Qimiao Si, a theoretical quantum physicist, earned the prestigious Vannevar Bush Faculty Fellowship grant. The five-year fellowship, with up to $3 million in funding, will go towards his work to establish an unconventional approach to create and control topological states of matter, which plays an important role in materials research and quantum computing.

Meanwhile, the DOE recently tapped three Houston universities to compete in its annual startup competition focused on "high-potential energy technologies,” including one team from Rice.

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A View From HETI

Simon M. King, a Rice University sophomore, served as the first author on a recent study of a new process for recycling lithium-ion batteries. Photo courtesy Rice

Rice University researchers have uncovered a more energy-efficient and faster way to recycle critical minerals from used lithium-ion batteries.

Traditional methods rely on high heat, long processing times and harsh chemicals to recover a small fraction of critical materials from batteries used in everything from smartphones to electric vehicles. However, the team from Rice's Department of Materials Science and Nanoengineering developed a process that uses a water-based solution containing amino chlorides to extract more metals in less time

The team published the findings in a recent edition of the scientific journal Small.

Simon King, a sophomore studying chemical and biomolecular engineering who completed this work as a summer research fellow at the Rice Advanced Materials Institute, served as first author of the study. He worked with corresponding authors Pulickel Ajayan, the Benjamin M. and Mary Greenwood Anderson Professor of Engineering, and Sohini Bhattacharyya, a research scientist in Ajayan’s lab.

By using a hydroxylammonium chloride (HACI) solution, the team achieved roughly 65 percent extraction of key battery metals in just one minute at room temperature, according to the study. The efficiencies grew to roughly 75 percent for several metals under longer processing times.

“We were surprised by just how fast the reaction occurs, especially without the involvement of high temperatures,” King said in a news release. “Within the first minute, we’re already seeing the majority of the metal extraction take place.”

By not requiring high temperatures or long reaction times, Rice predicts the process could have a major impact on cost and the environmental impact of lithium battery recycling. Additionally, the water-based HACI solution makes waste handling easier and lowers certain environmental risks.

In addition to extracting the materials, the team went on to demonstrate that the recovered metals could be recycled and reprocessed into new battery materials.

“A big advantage of this system is that it works under relatively mild conditions,” Ajayan added in the release. “That opens the door to more sustainable and scalable recycling technologies.”

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