5 papers
Detection of sub-degree fluctuations of the local cellmembrane slope using optical tweezers
Rahul Vaippully, Vaibavi Ramanujan, Manoj Gopalakrishnan +2
Normal thermal fluctuations of the cell membrane have been studied extensively using high resolution microscopy and focused light, particularly at the peripheral regions of a cell.…
Pitch-rotational manipulation of single cells and particles using single-beam thermo-optical tweezers
Sumeet Kumar, M. Gunaseelan, Rahul Vaippully +5
3D pitch rotation of microparticles and cells assumes importance in a wide variety of applications in biology, physics, chemistry and medicine. Applications such as cell imaging an…
In-vivo characterization of optically trapped Brownianprobes at a glance
Rahul Vaippully, Vaibavi Ramanujan, Saumendra Bajpai +1
Calibration of optically trapped particles in-vivo has been complicated given the frequency dependence and spatial inhomogeneity of the cytoplasmic viscosity, and the requirement o…
Detection of self-generated nanowaves on the interface of an evaporating sessile water droplet
Dhanush Bhatt, Rahul Vaippully, Bhavesh Kharbanda +4
Evaporating sessile droplets have been known to exhibit oscillations on the air-liquid interface. These are generally over millimeter scales. Using a novel approach, we are able to…
Study of adhesivity of surfaces using rotational optical tweezers
Rahul Vaipully, Dhanush Bhatt, Anand Dev Ranjan +1
Optical tweezers are powerful tools for high resolution study of surface properties. Such experiments are traditionally performed by studying the active or the brownian fluctuation…