Zobrazeno 1 - 10
of 5 115
pro vyhledávání: '"Kumar G P"'
Optical tweezers have revolutionized particle manipulation at the micro- and nanoscale, playing a critical role in fields such as plasmonics, biophysics, and nanotechnology. While traditional optical trapping methods primarily rely on optical forces
Externí odkaz:
http://arxiv.org/abs/2411.15512
Artificial soft matter systems have appeared as important tools to harness mechanical motion for microscale manipulation. Typically, this motion is driven either by the external fields or by mutual interaction between the colloids. In the latter scen
Externí odkaz:
http://arxiv.org/abs/2411.12488
Directional motion is commonly observed in various living active systems, such as bacterial colonies moving through confined environments. In these systems, the dynamics arise from the collective effects of mutual interactions between individual elem
Externí odkaz:
http://arxiv.org/abs/2409.16792
Autor:
Kumar, G. V. Pavan
Colloidal matter undergoing Brownian motion serves as a model system to study various physical phenomena. Understanding the effect of external perturbation on the assembly and dynamics of Brownian colloids has emerged as a relevant research issue in
Externí odkaz:
http://arxiv.org/abs/2408.15791
Surface plasmons (SP) and their mediated effects have been widely used to manipulate micro- and nanoscale objects of dielectric and metallic nature. In this work, we show how SP excitation can be used to induce thermofluidic and thermoelectric effect
Externí odkaz:
http://arxiv.org/abs/2407.00343
Autor:
Majumder, Sudipta, Walve, Vaibhav, Chand, Rahul, A., Gokul M., Hwang, Sooyeon, Kumar, G. V. Pavan, Deshpande, Aparna, Rahman, Atikur
Atomic vacancies, such as chalcogen vacancies in 2D TMDs, are important in changing the host material's electronic structure and transport properties. We present a straightforward one-step method for growing monolayer MoS2 utilizing oxidized Molybden
Externí odkaz:
http://arxiv.org/abs/2405.17373
Autor:
Choudhary, Anandam, Goswami, Laxman Prasad, Aparajit, C., Lad, Amit D., Parab, Ameya, Ved, Yash M., Das, Amita, Kumar, G. Ravindra
The interaction of intense linearly polarized femtosecond laser pulses with solids is known to generate azimuthal magnetic fields, while circularly polarized light has been shown to create axial fields. We demonstrate through experiments and particle
Externí odkaz:
http://arxiv.org/abs/2405.14375
The complex interaction dynamics of intense femtosecond (fs) pulses and their picosecond (ps)-long leading edge with nanostructured solids occur at both the nanometer and the femtosecond scales, making them extremely difficult to measure directly. He
Externí odkaz:
http://arxiv.org/abs/2403.10908
Autor:
Kumar, G. V. Pavan
C.V. Raman (1888 - 1970) was a creative scientist, enthusiastic teacher and a science celebrity in India. In all these roles, he communicated science effectively. In this essay, I ask how and why did he communicate science. I take a few examples from
Externí odkaz:
http://arxiv.org/abs/2403.04773
Autor:
Aparajit, C., Choudhary, Anandam, Dulat, Ankit, Grech, Mickael, Marini, Samuel, Lad, Amit D., Ved, Yash M., Raynaud, Michèle, Riconda, Caterina, Kumar, G. Ravindra
Extreme intensity contrast is considered essential for ultraintense, femtosecond laser excitation of solid targets, in particular for studies with structured or ultra-thin targets. Second-harmonic generation has been used to maximize the contrast in
Externí odkaz:
http://arxiv.org/abs/2402.11360