Many groups have explored theoretical systems in which a quantum dot is coupled to a nanowire or nanocavity. However, placing an emission source within the influence of such structures requires accuracy approaching molecular-length scales. The capability to position individual quantum dots near metallic nanostructures is highly desirable for constructing active optical devices that can manipulate light at the single photon level. [...]
The challenge of bridging from nano- to milli-meter scale has been realized, indeed a very fast way of creating nanometer-sized features over large surface areas is now available. US researchers at Northwestern University in Chicago proved that the optical nanolithography technique could be used to rapidly prototype miniature devices, such as photomasks, circuits and photonic components. The new technique developed by Chad Mirkin and colleagues is called beam pen lithography (BPL). [...]
Revzin's team collaborated with UCLA electrical engineer Prof. Aydogan Ozcan to integrate an antibody microarray with a lensfree holographic imaging device. The test returns results six to twelve times faster than traditional approaches and tests six parameters simultaneously. The lab on a chip device will have important applications in multiparametric blood analysis, especially in resource-poor areas for point of care analyses; nevertheless it will be also an attractive option in wealthier areas as a good and fast practice in clinical use. More than HIV testing and monitoring this will be a fast responsive device to guarantee safe blood transfusions. [...]
At the Department of Mechanical Engineering at Purdue University, scientists have succeeded in developing a carbon nanotubes based device to provide enhanced cooling applicable to insulated gate bipolar transistors, and to high-power switching transistors in power electronics for military and hybrid vehicles applications. The device is based on the new wicking technology representing the heart of a new ultrathin hollow plate containing water. The heat exchange functionality is enhanced from 50W/cm2, typical of standard computer chips cooling devices, to 550W/cm2. [...]
The National Nanotechnology Initiative (NNI) is the US Government agency cross –cut programme devoted to the development of activities in the field of nano – micro science and engineering in strong collaboration and interrelation with all the participating US agencies supporting it.
Micro-optomechanical device vibrates at record rates Optical electrostriction in microelectromechanical systems enables vibration at 11GHz and allows sonance frequency scaling with wavelength rather than device size. Devices resonating both optically and mechanically can exhibit coupled mechanical and electromagnetic modes [...]