ScienceDaily: Top Technology News



Early opaque universe linked to galaxy scarcity

Posted: 14 Aug 2018 12:09 PM PDT

A team of astronomers has made a surprising discovery: 12.5 billion years ago, the most opaque place in the universe contained relatively little matter.


Unraveling the nature of ‘whistlers’ from space in the lab

Posted: 14 Aug 2018 11:05 AM PDT

Scientists have presented research on a curious cosmic phenomenon known as ‘whistlers’ — very low frequency packets of radio waves that race along magnetic field lines. The study provides new insights into the nature of whistlers and space plasmas and could one day aid in the development of practical plasma technologies with magnetic fields, including spacecraft thrusters that use charged particles as fuel.


Security gaps identified in Internet protocol ‘IPsec’

Posted: 14 Aug 2018 10:42 AM PDT

Researchers have demonstrated that the Internet protocol ‘IPsec’ is vulnerable to attacks. The Internet Key Exchange protocol ‘IKEv1’, which is part of the protocol family, has vulnerabilities that enable potential attackers to interfere with the communication process and intercept specific information.


Natural refrigerant replacements could reduce energy costs and conserve the environment

Posted: 14 Aug 2018 10:41 AM PDT

The 1987 Montreal Protocol and the 1997 Kyoto Protocol called for countries around the world to phase out substances that deplete the ozone layer, but many HVAC systems still use synthetic refrigerants that violate those international agreements and inflict environmental damage. Recently, researchers investigated how natural refrigerants could be used in geothermal heat pumps to reduce energy consumption and operating costs.


Light-engineered bacterial shapes could hold key to future labs-on-a-chip

Posted: 14 Aug 2018 10:41 AM PDT

Scientists have used light patterns to control the swimming speed of bacteria and direct them to form different shapes.


Ecology of investors in financial markets

Posted: 14 Aug 2018 07:32 AM PDT

Researchers studied the similarity of investment decisions in the financial market and how the investment strategies used by the investors influence the volatility of the markets by using an exceptionally large set of empirical data. The results help in understanding the operation of financial markets and shed light on the connection of earlier theories to the actual stock market.


Can radar replace stethoscopes?

Posted: 14 Aug 2018 07:15 AM PDT

Electronic engineers have developed a procedure for reliably detecting and diagnosing heart sounds using radar. In future, mobile radar devices could replace conventional stethoscopes and permanent touch-free monitoring of patients’ vital functions could be possible using stationary radar devices.




Flipping the switch on supramolecular electronics

Posted: 14 Aug 2018 07:14 AM PDT

Engineers have successfully combined photoswitchable molecular lattices with layered materials to create new high-performance devices that show macroscopic responses to light.


How hot is Schrödinger’s coffee?

Posted: 14 Aug 2018 07:14 AM PDT

A new uncertainty relation, linking the precision with which temperature can be measured and quantum mechanics, has been discovered.


Artificial placenta created in the laboratory

Posted: 14 Aug 2018 07:14 AM PDT

Scientists have now produced an artificial placenta model that very closely resembles the natural organ. Using a specially developed femtosecond laser-based 3D printing process, it is possible to produce customized hydrogel membranes directly within microfluidic chips, which are then populated with placenta cells. This means it is now possible to provide clarity in some vital research issues, such as the exchange of glucose between mother and child.


Bacteria-fighting polymers created with light

Posted: 14 Aug 2018 07:14 AM PDT

Hundreds of polymers — which could kill drug-resistant superbugs in novel ways — can be produced and tested using light, using a new method.


Long-sought carbon structure joins graphene, fullerene family

Posted: 13 Aug 2018 04:01 PM PDT

Scientists have been playing with pure carbon compounds for centuries, starting with diamond and graphite and now with fullerenes, nanotubes and graphene. One type of 3D geometry has been missing, however: a negatively curved carbon-cage surface called schwarzite. Chemists have now shown that serendipitously produced materials called zeolite-templated carbons are in fact the long-sought schwarzites. Their recipe for making schwarzites could make them practical in electronics and gas storage.

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