feed info

261,096 articles from PhysOrg

Wireless sensor enables real-time spoilage alerts on food

Food waste and food-borne diseases are among the most critical problems urban populations face today. They contribute to greenhouse emissions tremendously and amplify economic and environmental costs. Since food spoilage remains the main reason for this waste, the circumstances of processing, transporting, and preserving food still need to be improved in line with current technological...

Scientists demonstrate 3D 'bio-printing' inside organoids growing in hydrogels

Scientists from the NIHR Great Ormond Street Hospital Biomedical Research Centre (a collaboration between GOSH and UCL), London, and University of Padova, Italy, have shown for the first time how 3D printing can be achieved inside "mini-organs" growing in hydrogels—controlling their shape, activity, and even forcing tissue to grow into "molds."

Scientists make a surprising discovery about magnetic defects in topological insulators

Scientists from the Department of Energy's Ames National Laboratory made an intriguing discovery while conducting experiments to characterize magnetism in a material known as a dilute magnetic topological insulator where magnetic defects are introduced. Despite this material's ferromagnetism, the team discovered strong antiferromagnetic interactions between some pairs of magnetic defects that play...

Novel ferroelectrics for more efficient microelectronics

When we communicate with others over wireless networks, information is sent to data centers where it is collected, stored, processed, and distributed. As computational energy usage continues to grow, it is on pace to potentially become the leading source of energy consumption in this century. Memory and logic are physically separated in most modern computers, and therefore the interaction between...

Cryo-EM study shows zinc transporter has built-in self-regulating sensor

Scientists at the U.S. Department of Energy's (DOE) Brookhaven National Laboratory have determined the atomic-level structure of a zinc-transporter protein, a molecular machine that regulates levels of this crucial trace metal micronutrient inside cells. As described in a paper just published in Nature Communications, the structure reveals how the cellular membrane protein shifts its shape to move...

Researchers discover jet streams in Mars' magnetosheath

A research team from Umeå University and the Swedish Institute of Space Physics in Kiruna has discovered jet streams in the magnetosheath of Mars using data collected by NASA's MAVEN spacecraft. This is the first time such a jet has been found in the magnetosheath of a planet other than Earth. The results are published in the journal Science Advances.

Liquid metal sticks to surfaces without a binding agent

Everyday materials such as paper and plastic could be transformed into electronic "smart devices" by using a simple new method to apply liquid metal to surfaces, according to scientists in Beijing, China. The study, published June 9 in the journal Cell Reports Physical Science, demonstrates a technique for applying a liquid metal coating to surfaces that do not easily bond with liquid metal. The...

Wolves in Minnesota switch to fish as a main source of food in the spring

A team of wildlife specialists from the University of Minnesota, the University of Manitoba and Voyageurs National Park has found that wild wolves living in Minnesota tend to switch from feasting on larger prey to fish as their main source of food in the spring. In their study, reported in the journal Royal Society Open Science, the group used a variety of methods to study the eating behavior of...

The first prehistoric wind instruments discovered in the Levant

Although the prehistoric site of Eynan-Mallaha in northern Israel has been thoroughly examined since 1955, it still holds some surprises for scientists. Seven prehistoric wind instruments known as flutes, recently identified by a Franco-Israeli team, are the subject of an article published on 9 June in Scientific Reports.