New type of biosensor is fast, super-sensitive

New type of biosensor is fast, super-sensitive – A whole new class of biosensor that can detect exceptionally small traces of contaminants in liquids in just 40 minutes has been developed by a UNSW-led team of researchers. Known as a biochemiresistor, it meets a long-standing challenge to create a sensor that is not only super-sensitive to the presence of chemical compounds but responds quickly. It has countless potential uses for detecting drugs, toxins and pesticides for biomedical or environmental analysis. Reference: J. Gooding et al, Angewandte Chemie 25 MAY 2012 DOI: 10.1002/anie.201202350

Nuclear clock may keep time with the Universe

Nuclear clock may keep time with the Universe – A proposed new time-keeping system tied to the orbiting of a neutron around an atomic nucleus could have such unprecedented accuracy that it neither gains nor loses 1/20th of a second in 14 billion years – the age of the Universe. In a paper to be published in the journal Physical Review Letters – with US researchers at the Georgia Institute of Technology and the University of Nevada – Victor Flambaum and UNSW colleague Vladimir Dzuba report that their proposed single-ion clock would be accurate to 19 decimal places.