To gauge whether suspects involved in accidents or routine traffic stops have been driving drunk, police officers pair field sobriety tests with breathalyzers, which signal the presence of alcohol in the breath. Most breathalyzers are expensive and unable to test for precise concentrations of alcohol. Offering a better solution, Italian researchers have developed a novel idea for an inexpensive, portable breathalyzer whose color would change from green to red with higher alcohol concentrations.
Using ultra-fast laser pulses, researchers have made the first detailed observation of how energy travels through diamonds containing nitrogen-vacancy centers -- promising candidates for a variety of technological advances such as quantum computing.
Once developed, the technology will provide medical researchers and healthcare providers with a new diagnostic tool to aid in the detection of cancer and other diseases. Its creators say the technology could also lead to the development of new treatments for those diseases.
Tsu-Wei Chou, Pierre S. du Pont Chair of Engineering at the University of Delaware, has received funding from the National Research Foundation of Korea to support research in advanced hybrid nano- and micro-composites for structural and multifunctional applications.
For years scientists have been working to fundamentally understand how nanoparticles move throughout the human body. One big unanswered question is how the shape of nanoparticles affects their entry into cells. Now researchers have discovered that under typical culture conditions, mammalian cells prefer disc-shaped nanoparticles over those shaped like rods.
Researchers are developing a system that uses tiny magnetic beads to quickly detect rare types of cancer cells circulating in a patient's blood, an advance that could help medical doctors diagnose cancer earlier than now possible and monitor how well a patient is responding to therapy.