23 citations · 106 across the 16 of their papers we have counts for
16 papers
Achieving High Temporal Resolution in Single-Molecule Fluorescence Techniques using Plasmonic Nanoantennas
Sunny Tiwari, Prithu Roy, Jean-Benoît Claude +1
Single-molecule fluorescence techniques are essential for investigating the molecular mechanisms in biological processes. However, achieving sub-millisecond temporal resolution to…
Ultraviolet Nanophotonics Enables Autofluorescence Correlation Spectroscopy on Label-Free Proteins With a Single Tryptophan
Prithu Roy, Jean-Benoît Claude, Sunny Tiwari +2
Using the ultraviolet autofluorescence of tryptophan aminoacids offers fascinating perspectives to study single proteins without the drawbacks of fluorescence labelling. However, t…
Opto-thermoelectric trapping of Fluorescent Nanodiamonds on Plasmonic Nanostructures
Ashutosh Shukla, Sunny Tiwari, Ayan Majumder +2
Deterministic optical manipulation of fluorescent nanodiamonds (FNDs) in fluids has emerged as an experimental challenge in multimodal biological imaging. Designing and developing…
Directing Monolayer Tungsten Disulfide Photoluminescence using a Bent Plasmonic Nanowire on a Mirror Cavity
Shailendra K. Chaubey, Sunny Tiwari, Ashutosh Shukla +3
Designing directional optical antennas without compromising the field enhancement requires specially designed optical cavities. Herein, we report on the experimental observations o…
Mirror-Coupled Microsphere can narrow the Angular distribution of Photoluminescence from WS2 Monolayers
Shailendra K. Chaubey, Sunny Tiwari, Gokul M. A. +3
Engineering optical emission from two dimensional, transition metal dichalcogenides (TMDs) materials such as Tungsten disulphide (WS2) has implications in creating and understandin…
Single Molecule SERS in a Single Gold Nanoparticle-driven Thermoplasmonic Tweezer
Sunny Tiwari, Utkarsh Khandelwal, Vandana Sharma +1
Surface enhanced Raman scattering (SERS) is optically sensitive and chemically specific to detect single molecule spectroscopic signatures. Facilitating this capability in opticall…
Optothermal pulling, trapping, and assembly of colloids using nanowire plasmons
Vandana Sharma, Sunny Tiwari, Diptabrata Paul +3
Optical excitation of colloids can be harnessed to realize soft matter systems that are out of equilibrium. In this paper, we present our experimental studies on the dynamics of si…
Beaming Elastic and SERS Emission from Bent-Plasmonic Nanowire on a Mirror Cavity
Sunny Tiwari, Adarsh B. Vasista, Diptabrata Paul +2
We report on the experimental observation of beaming elastic and surface enhanced Raman scattering (SERS) emission from a bent-nanowire on a mirror (B-NWoM) cavity. The system was…
Sub-Wavelength Plasmon Polaritons Channeling of Whispering Gallery Modes of Fluorescent Silica Microresonator
Sunny Tiwari, Chetna Taneja, G. V. Pavan Kumar
Herein, we report sub-wavelength propagation and directional out-coupling of whispering gallery modes (WGMs) of a fluorescent silica microsphere resonator mediated via plasmon pola…
Mirror enhanced directional out-coupling of SERS by remote excitation of a nanowire-nanoparticle cavity
Sunny Tiwari, Adarsh B Vasista, Diptabrata Paul +1
We report on the experimental observation of mirror enhanced directional surface enhanced Raman scattering (SERS) from a self-assembled monolayer of molecules coupled to a nanowire…
Directional emission from WS2 monolayer coupled to plasmonic Nanowire-on-Mirror Cavity
Shailendra K. Chaubey, Gokul M. A., Diptabrata Paul +3
Influencing spectral and directional features of exciton emission characteristics from 2D transition metal dichalcogenides by coupling it to plasmonic nano-cavities has emerged as…
Plasmonic nanowire coupled to zero-dimensional nanostructures: A brief review
Sunny Tiwari, Chetna Taneja, G V Pavan Kumar
Metal nanowires and nanoparticles that facilitate surface plasmons are of contemporary interest in nanophotonics, thermoplasmonics and optoelectronics. They facilitate not only sub…
Large-scale optothermal assembly of colloids mediated by a gold microplate
Vandana Sharma, Diptabrata Paul, Shailendra K Chaubey +2
Light-activated colloidal assembly and swarming can act as model systems to explore non-equilibrium state of matter. In this context, creating new experimental platforms to facilit…
Dielectric microsphere coupled to a plasmonic nanowire: A self-assembled hybrid optical antenna
Sunny Tiwari, Chetna Taneja, Vandana Sharma +3
Hybrid mesoscale-structures that can combine dielectric optical resonances with plasmon-polaritons are of interest in chip-scale nano-optical communication and sensing. This experi…
Vectorial Fluorescence Emission from Microsphere Coupled to Gold Mirror
Adarsh B. Vasista, Sunny Tiwari, Deepak K. Sharma +2
We report on the generation, and momentum space distribution of fluorescence emission from individual SiO2 microsphere on dye coated Au mirror. The molecular fluorescence emission…
Doughnut shaped emission from vertical organic nanowire coupled to thin plasmonic film
Adarsh B. Vasista, Ravi P. N. Tripathi, Shailendra K. Chaubey +2
Vertical nanowires facilitate an innovative mechanism to channel the optical field in the orthogonal direction and act as a nanoscale light source. Subwavelength, vertically orient…