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Raman Tweezers Spectroscopy of Live, Single Red and White Blood Cells
The richness of the measured spectrum illustrates that Raman studies of live cells in suspension are more informative than conventional micro-Raman studies where the cells are chemically bound to a glass cover slip.
Tank treading of optically trapped red blood cells in shear flow.
Naturally occurring, optically driven, cellular rotor
We report the conversion of optical energy into mechanical energy by naturally occurring red blood cells (RBCs) placed in an optical trap. A trapped RBC undergoes folding due to the elastic nature of…
Torque-generating malaria-infected red blood cells in an optical trap.
Measurements indicate that the torque of rotating iRBCs is up to three orders of magnitude larger, which is in the context of known molecular motors.
Long-lived, doubly charged diatomic and triatomic molecular ions
Lifetimes of doubly charged diatomic and triatomic molecules have been measured by monitoring the decay curves of such ions in a heavy-ion storage ring. CO2+, N22+, CO22+, CS22+ and SH2+ are all…
Euler buckling-induced folding and rotation of red blood cells in an optical trap.
A model based on geometric considerations, using the concept of buckling instabilities, captures the folding phenomenon; the rotation of the cell is rationalized using the Poincaré sphere and a possible mechanism for the emergence of birefringent properties in the RBC in the folded state is suggested.
Carrier-envelope-phase effects in ultrafast strong-field ionization dynamics of multielectron systems: Xe and CS2.
- D. Mathur, K. Dota, A. Dharmadhikari, J. Dharmadhikari
- PhysicsPhysical review letters
- 16 January 2013
The relative enhancement of fragmentation when CEP-stabilized 2-cycle pulses are used is found to be at the expense of molecular ionization, reflecting the phase dependence of nonsequential ionization and its contribution to the formation of higher charge states.
A Micro-Raman Study of Live, Single Red Blood Cells (RBCs) Treated with AgNO3 Nanoparticles
It is proposed that the interaction of Ag NPs with the cell surface induces damage brought about by alteration of intracellular pH caused by the blockage of the cell membrane transport.
Systematic study of highly efficient white light generation in transparent materials using intense femtosecond laser pulses
We report the results of a systematic study of white light generation in different high band-gap optical media (BaF2, acrylic, water and BK-7 glass) using ultrashort (45 fs) laser pulses. We have…
Asymmetric high-energy ion emission from argon clusters in intense laser fields.
A directional asymmetry in the ion-explosion energies is observed for the highest charge states, and the ions' distribution consists of a low-energy isotropic component, and a high-energy anisotropic one.