Category Physics

A Reconfigurable Device based on 2D van der Waals Heterostructures that works both as a Transistor and Memory

A reconfigurable device based on 2D van der Waals heterostructures that works both as a transistor and memory
Schematic structure of the PFGFET created by the researchers, which is made from graphene (mauve, the partial floating gate), hexagonal boron nitride (green and purple) and tungsten diselenide (red and blue, the channel). The PFGFET can act as a memory with forwards and backwards transfer characteristics and as a transistor. The device has a source electrode (S) and a drain electrode (D), and is controlled by two of the terminals of the device: the control gate (CG) and the top gate (TG). Credit: Sun et al, Nature Electronics (2022). DOI: 10.1038/s41928-022-00858-z

One key objective of electronics engineering research is to develop computing devices that are both highly performing and energy-efficient, meaning that they can compute information quickly while consuming little power...

Read More

Harvesting Light to Grow Food and Clean Energy Together

solar filters emit a red light over tomato plants in an outdoor research field at UC Davis
Solar filters emit a red light over tomato plants growing in a research field at UC Davis in 2022. The work further tests the findings of a UC Davis study showing plants in agrivoltaic systems respond best to the red spectrum of light while blue light is better used for energy production. (Andre Daccache/UC Davis)

Different light spectra serve different needs for agrivoltaics. People are increasingly trying to grow both food and clean energy on the same land to help meet the challenges of climate change, drought and a growing global population that just topped 8 billion. This effort includes agrivoltaics, in which crops are grown under the shade of solar panels, ideally with less water.

Now scientists from the University of California, Davis, are investigating how to better harvest ...

Read More

Researchers use Ultrasound Waves to Move Objects Hands-Free

CSE students Matt Stein, Yujie Luo, and Sam Keller
University of Minnesota Twin Cities researchers have discovered a new method to move objects using ultrasound waves, opening the door for using contactless manipulation in industries such as robotics and manufacturing. In the above image, University of Minnesota students Matthew Stein, Yujie Luo, and Sam Keller interact with an object that has a metamaterial surface. Photo by Olivia Hultgren.

Contactless manipulation method could be used in industries such as robotics and manufacturing,where devices wouldn’t need a built-in power source in order to move.

University of Minnesota Twin Cities researchers have discovered a new method to move objects using ultrasound waves. The study is published in Nature Communications, a peer-reviewed, open-access scientific journal.

While it’s bee...

Read More

New Quantum Dots study uncovers Implications for Biological Imaging

CdZnSe/CdZnS quantum dots (QDs) have a complex internal structure that extends the lifetime. (A) TEM analyses reveal a zinc selenide-rich core interior and a cadmium sulfide shell exterior. (B) Time resolved emission reveals lifetime tunability by simple alterations to the QD structure. The lifetimes can be 10-times greater compared with similar materials.

Researchers report the synthesis of semiconductor ‘giant’ core-shell quantum dots with record-breaking emissive lifetimes. In addition, the lifetimes can be tuned by making a simple alteration to the material’s internal structure.

A new study involving researchers at the University of Illinois Chicago achieved a milestone in the synthesis of multifunctional photonic nanomaterials.

The group, which included collaborators from Pr...

Read More