Compounds Could Be Basis For Devices That Turn Waste Heat Into Electricity
Cage-like compounds called clathrates could be used for harvesting waste heat and turning it into electricity. UC Davis chemists just discovered a whole new class of clathrates, potentially opening new ways to make and apply these materials.
UC Davis chemists discovered a new class of clathrates that break the four-bond rule. The discovery was featured on the cover of the journal Angewandte Chemie (Wiley)
By Holly Ober
Two UC Davis graduates have started a company incubated in the TEAM manufacturing facility at the UC Davis Department of Biomedical Engineering.
Arshia Firouzi and Gurkern Sufi met in 2011 as Freshmen living in Tercero Dormitories at UC Davis and quickly became friends. Arshia majored in Electrical Engineering and Gurkern in Biotechnology, and they worked with the mentorship of Professor Marc Facciotti to explore their shared interest in the intersection of electronics and biology. In 2015 they won a VentureWell grant for a research project, which they pursued in TEAM’s Molecular Prototyping and Bioinnovation Laboratory. By the end of their project, they had come up with an idea that grew into a company that could usher in a new era for laboratories all over the world.
By Lisa Howard
On January 20, 1990, when the nuclear reactor at McClellan Air Force Base achieved its first sustained nuclear reaction known as “criticality,” it was the newest reactor in the United States.
Six years later, when the Tennessee Valley Authority launched the Watts Bar Nuclear Generating Station, the nuclear reactor at McClellan was relegated to second newest. McClellan would go on to retain that ranking for another two decades until this past October when the Tennessee Valley Authority launched Watts Bar Unit 2.
The UC Davis-based EXPLORER consortium, which aims to build a revolutionary total-body PET (positron emission tomography) scanner, has announced the selection of two industry partners to help build the prototype device. They are United Imaging Healthcare America, a North American subsidiary of Shanghai United Imaging Healthcare, and SensL Technologies of Cork, Ireland.
Positron emission tomography, or PET, scanning uses short-lived radioactive tracers to show how organs and tissues are functioning in the body, while magnetic resonance imaging (MRI) and computed tomography (CT) scans mostly show anatomy. PET scans are widely used to diagnose and track a variety of illnesses, including cancer, heart disease and Alzheimer’s disease.
2016 saw an unprecedented use of cyberattacks during a U.S. presidential election. According to the U.S. Department of Homeland Security and the Office of the Director of National Intelligence, the Russian government directed theft of emails and release of information in an apparent attempt to influence the election.
What does this mean for the coming year? I asked Professors Karl Levitt, Matt Bishop, Hao Chen, and Felix Wu of the UC Davis Computer Security Laboratory for some thoughts about cybersecurity in the wake of the 2016 election hack. Here’s what they had to say.
In the latest episode of the Three Minute Egghead podcast, Ilias Tagkopoulos talks about a computer model that predicts the metabolism of the bacteria Escherichia coli. While E. coli might be one of the most-studied organisms both in labs and as a cause of disease, there is still much we don’t know about it, he notes.
Tagkopoulos and his team spent two years pulling together all the data they could find on E. coli, from DNA sequences to metabolism, and assembling it into a single database. They then used computer clusters and the Blue Waters supercomputer to create their model. You can access their data here.
By Linda Vu, Lawrence Berkeley National Laboratory
Getting a better picture of connections between brain areas is the goal of a new tool developed by researchers at the U.S. Department of Energy’s Lawrence Berkeley National Laboratory and UC Davis. Their “Brain Modulyzer” software allows researchers to visualize and explore brain activity, either while a subject is performing tasks or at rest.
By Becky Oskin
Solar cells made from perovskites have sparked great excitement in recent years because the crystalline compounds boast low production costs and high energy efficiencies. Now UC Davis scientists have found that some promising compounds — the hybrid lead halide perovskites — are chemically unstable and may be unsuited for solar cells.
“We have proven these materials are highly unlikely to function on your rooftop for years,” said Alexandra Navrotsky, interdisciplinary professor of ceramic, earth, and environmental materials chemistry at UC Davis and director of the Nanomaterials in the Environment, Agriculture, and Technology (NEAT) organized research unit.
We’re adding a new element to the Egghead blog this month with Three Minute Egghead, a podcast about research at UC Davis. While we figure out a few details about RSS feeds and XML, I’ll be posting these audio files to the Egghead blog, usually with an accompanying blog post.
Our first piece is about two UC Davis computer scientists who are using data from the open-source programming website GitHub to learn about coder’s work habits and in particular, how multitasking affects productivity.
Study author Bogdan Vasilescu will be presenting the study at the International Conference on Software Engineering in Austin, Texas tomorrow, May 20.
Our electronic devices are based on what happens when different materials are layered together: “The interface is the device,” as Nobel laureate Herbert Kroemer famously claimed over 40 years ago. Right now, our microchips and memory devices are based on the movement of electrons across and near interfaces, usually of silicon, but with limitations of conventional electronics become apparent, researchers are looking at new ways to store or process information. These “heterostructures” can also find applications in advanced batteries and fuel cells.
Now physicists at UC Davis have observed what’s going on at some of these interfaces as oxygen ions react with different metals, causing drastic changes in magnetic and electronic properties.