Loading video.
VIDEO: At time passes, different stray light contributors (ghost) appear and disapear on the detector. The time of arrival is related to the optical path length, we can identify each contributor. view more
Credit: Lionel Clermont / Centre Spatial de Liège / Université de Liège
A team of researchers at the Centre Spatial de Liège (CSL) of the University of Liège has just developed a method to identify the contributors and origins of stray light on space telescopes. This is a major advance in the field of space engineering that will help in the acquisition of even finer space images and the development of increasingly efficient space instruments. This study has just been published in the journal
E-Mail
IMAGE: Schematic of the proof-of-concept demonstration of harvesting a wireless signal of 2.4 GHz using electrically-connected eight magnetic tunnel junctions view more
Credit: S.Fukami
Researchers at the National University of Singapore (NUS) and Tohoku University have demonstrated that an array of electrically connected spintronic devices can harvest a 2.4 GHz wireless signal, which can be used to power and charge small electronic devices and sensors.
The researchers from NUS and Tohoku University have successfully synchronized the four electrically connected magnetic tunnel junction (MTJ), for the signal transmission at 2.4 GHz. Furthermore, the eight MTJs array was integrated with the conventional battery-free electronics to harvest a wireless signal of 2.4 GHz to a DC signal, which is used to power light emitting diodes (LED).
E-Mail
IMAGE: Topology-based machine learning classifies how human cells organize into spatial patterns based on the presence of persistent topological loops around empty regions, which can be used to infer cellular behaviors. view more
Credit: Wong lab/Brown University
PROVIDENCE, R.I. [Brown University] The field of mathematical topology is often described in terms of donuts and pretzels.
To most of us, the two differ in the way they taste or in their compatibility with morning coffee. But to a topologist, the only difference between the two is that one has a single hole and the other has three. There s no way to stretch or contort a donut to make it look like a pretzel at least not without ripping it or pasting different parts together, both of which are verboten in topology. The different number of holes make two shapes that are fundamentally, inexorably different.
About JAMA Network Open: JAMA Network Open is the new online-only open access general medical journal from the JAMA Network. On weekdays, the journal publishes peer-reviewed clinical research and commentary in more than 40 medical and health subject areas. Every article is free online from the day of publication.
###
Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.
Share
Imagine an entire twenty storey concrete building which can store energy like a giant battery. Thanks to unique research from Chalmers University of Technology, Sweden, such a vision could someday be a reality. Researchers from the Department of Architecture and Civil Engineering recently published an article outlining a new concept for rechargeable batteries - made of cement.