Schematic representation of the monolithically integrated SiPV–LIB device and the electrochemical performance of the bipolar LIB.

A UNIST affiliated team has developed a single-unit, photo-rechargeable portable power source based on high-efficiency silicon solar cells and lithium-ion batteries (LIBs). This newly-developed power source is designed to work under sunlight and indoor lighting, allowing users to power their portable electronics anywhere with access to light. In addition, the new device could power electric devices even in the absence of light.

In this work, the team of Professor Sang-Young Lee and Professor Kwanyoung Seo of Energy and Chemical Engineering at UNIST presented a new class of monolithically integrated, portable PV-battery systems (denoted as ‘SiPV-LIBs’) based on...

The image on the left shows a compact model of the heliosphere, supported by this latest data, while the image on the right shows an alternate model with an extended tail. The main difference is the new model’s lack of a trailing, comet-like tail on one side of the heliosphere. This tail is shown in the old model in light blue. Credits: Dialynas, et al. (left); NASA (right)

New Cassini mission data, combined with measurements from the 2 Voyager spacecraft and NASA’s Interstellar Boundary Explorer, IBEX, suggests our sun and planets are surrounded by a giant, rounded system of magnetic field from the sun—calling into question the alternate view of the solar magnetic fields trailing behind the sun in the shape of a long comet tail.

The sun releases a constant outflow of magnetic solar ma...

1. The robotic arms are highly sensitive to touch, have up to ten degrees of movement, and can perform surgical procedures by means of a single incision.
Copyright : The Hong Kong Polytechnic University
2.The robotic arms are highly sensitive to touch, have up to ten degrees of movement, and can perform surgical procedures by means of a single incision.
Copyright : NISI (HK) Limited

HK researchers have developed a novel surgical robotic system that provides tactile feedback and is capable of single-incision and natural orifice (incision-free) robotic surgery. The system minimizes surgical trauma and is safer than currently available robotic systems...

New research correlates sugary drinks—as well as diet soda—to smaller brain volume and memory deficits. Photo by RapidEye/iStock

Both sugary, diet drinks correlated with accelerated brain aging. Researchers using data from the Framingham Heart Study (FHS) found that people who drink sugary beverages frequently are more likely to have poorer memory, smaller overall brain volume, and a significantly smaller hippocampus. A follow-up study found that people who drank diet soda daily were almost 3X as likely to develop stroke and dementia when compared to those who did not.

Researchers are quick to point out that these findings, which appear separately in the journals Alzheimer’s & Dementia and Stroke, demonstrate correlation but not cause-and-effect...