With the progress of human society, science and technology, the laser itself, the pace of development has never stopped. University of California, Berkeley M.Huang and P.Yang et al "Room temperature ultraviolet radiation nano laser," claims to be the world's smallest laser. Micro-sized nanometer laser photons can be restricted to a few state, while the bass effect makes photon gallery constrained, until the generated waves accumulate enough energy back through this structure. As a result, the laser to achieve high efficiency, and the energy threshold is very low. Nanometer laser is actually bent into the shape of a thin bagel photons wire was found that the size and shape of the nano-lasers can effectively control it emits a photon quantum behavior, thus affecting the operation of the laser. Scientists have developed a new, simple, low-cost instrument, by knowing the change in the surface charge density or a solution PH value to detect DNA and other biological molecules. Another important finding was that based on nano lasers biosensor can detect the intensity of the laser radiation by the case of surface charges, which can also be used to detect the absorption properties of biological molecules. Laser intensity to detect biomolecular process more simple and therefore low cost fluorescence spectroscopy or fluorescent labels used than conventional sensors. Based on nano lasers biological sensors to detect biological molecules by changing the laser intensity, so neither marked nor spectrometer, thus greatly simplifying the detection process, this method has been validated in a DNA molecule. Speaking nm laser biosensors potential applications, research group hopes that the technology is a simpler than conventional methods, such as blood in the probe DNA molecules in the human body fluids to detect cancer and Alzheimer's disease marker protein. This research project starting in 2012, will continue until 2016, the ultimate goal is to develop a sensor based on photonic crystal nano lasers for detecting biomarkers currently in development to further simplify and sensors, hope can be put in the next few years practical application. QQ: 447380394 Tel: 027-85717787 Tamrac Tamrac laser laser www.whhxty.com Alibaba station whtyjg.1688.com Jupiter photoelectric www.muxing360.com