On-the-Fly Calibrated Measure and Remote Control of Temperature and Viscosity at Nanoscale.

ABSTRACT: A novel on-the-fly calibration method of optical tweezers is presented, which enables in situ control and measure of absolute temperature and viscosity at nanoscale dimensions. Such noncontact measurement and control at the nanoscale are challenging as the present techniques only provide off-line measurements that do not provide absolute values. Additionally, some of the present methods have a low spatial resolution. We simultaneously apply the high temporal sensitivity of position autocorrelation and equipartition theorem to precisely measure and control in situ temperature and the corresponding microrheological property around the focal volume of the trap at high spatial resolution. The femtosecond optical tweezers (FOTs) use a single-beam high repetition rate laser for optical tr

SUBMITTER: Mondal D 

PROVIDER: S-EPMC6645231 | biostudies-literature | 2018 Sep

REPOSITORIES: biostudies-literature