Normal microscopes have their limitation which is dictated by the properties of light. There is a limit to the resolution which can be afforded by a microscope. This problem has been resolved to some extent with the advent of the Electron Microscope. However with Atomic Force Microscope the accuracy can increase by 20 times. Of course there are some issues pertaining to the use of atomic microscope which can be sorted out in the near future.
Studies have found that the efficacy of the microscope can be increased by as much as 20 times or even more. This is possible by using lasers. The latest development will enable the microscope to clearly show even the minutest details and will be able to see a virus also. It was something which was unthinkable until now.
The scientists are working on improving the atomic force microscope and they are getting the help of the laser based technology. The miniscule silver-gallium gold plated nanowire is the most important part in the atomic force microscope.
Ben Buchler, of the Department of Quantum Science at the Australian National University (ANU) says, “At room temperature the probe vibrates, just because it is warm, and this can make your measurements noisy. We can stop this motion by shining lasers at the probe”.
According to Professor Ping Koy Lam who is the co author of the report is of the view that microscopic probes will start vibrating and make the data less accurate. Cooling helps to garner sensitivity which makes it possible to weigh a large virus which is almost 1000 million times lighter than a mosquito. Scientists are now planning to overcome the heat problem by applying cool lasers to reduce the interference from the ambient temperature. However scientists have to be vigilant to make sure that the probe does not overheat. The readings have to be done very quickly, when the laser is off so that the probe does not heat again.