R. Mohan Sankaran
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View article: Direct‐Current Plasma Formation Between Two Liquid Water Surfaces
Direct‐Current Plasma Formation Between Two Liquid Water Surfaces Open
Non‐thermal, atmospheric‐pressure plasmas formed near liquids are typically in contact with metal at a boundary. Here, a new strategy is presented to generate a direct current (DC) plasma between a pair of liquid water surfaces. Characteri…
View article: Influence of Gaseous Oxygen Species on Liquid-Phase, Fixed Nitrogen Products in Aqueous Plasma-Based Electrochemical Processes
Influence of Gaseous Oxygen Species on Liquid-Phase, Fixed Nitrogen Products in Aqueous Plasma-Based Electrochemical Processes Open
Electrified, small-scale, remote approaches are needed as an alternative to conventional centralized methods for nitrogen fixation in order to reduce our reliance on fossil fuels and ensure global food security. Plasma-based electrolytic p…
View article: Advancing Fusion Research and Development at TAE Technologies Through INFUSE Program
Advancing Fusion Research and Development at TAE Technologies Through INFUSE Program Open
The U.S. Department of Energy’s Innovation Network for Fusion Energy (INFUSE) program serves as a crucial catalyst by fostering public-private partnership that accelerates technological innovation for fusion energy research and development…
View article: Photonic crystal enhanced fluorescence using a hybrid hexagonal boron nitride spacer and plasmonic gold cryosoret cavity
Photonic crystal enhanced fluorescence using a hybrid hexagonal boron nitride spacer and plasmonic gold cryosoret cavity Open
Electric and magnetic field hotspots enhanced using a hBN spacer with Au cryosoret nanocavities. The radiating dipole at the cryosoret–hBN–photonic crystal interface drives unprecedented photonic crystal enhanced fluorescence (PCEF).
View article: Insights into Sustainable Nitrogen Fixation by Gas-phase Spectroscopic Measurements and Global Modeling of Reaction Intermediates in Humid Nitrogen Plasma
Insights into Sustainable Nitrogen Fixation by Gas-phase Spectroscopic Measurements and Global Modeling of Reaction Intermediates in Humid Nitrogen Plasma Open
In this article, there is growing interest in reacting molecular nitrogen and water to sustainably synthesize fixed forms of nitrogen such as ammonia. In particular, low-temperature plasmas can activate these relatively inert feedstocks at…
View article: Intervalence Plasmons in Boron-Doped Diamond
Intervalence Plasmons in Boron-Doped Diamond Open
Doped semiconductors can exhibit metallic-like properties ranging from superconductivity to tunable localized surface plasmon resonances. Diamond is a wide-bandgap semiconductor that is rendered electronically active by incorporating a hol…
View article: Flow reactor experiments of high-temperature graphite oxidation and nitridation
Flow reactor experiments of high-temperature graphite oxidation and nitridation Open
Predicting the gas-surface interactions of solid carbon is necessary for the design of many engineering systems that employ graphite. Experimental determination of the reaction rates improves the fidelity of those predictions. Here, we stu…
View article: Physics and applications of dusty plasmas: The Perspectives 2023
Physics and applications of dusty plasmas: The Perspectives 2023 Open
Dusty plasmas are electrically quasi-neutral media that, along with electrons, ions, neutral gas, radiation, and electric and/or magnetic fields, also contain solid or liquid particles with sizes ranging from a few nanometers to a few micr…
View article: Collaborative Research: Understanding Nanoparticle-Plasma Interactions in Dusty Non-Thermal Plasmas by Nanoparticle Probes and Online Aerosol Characterization
Collaborative Research: Understanding Nanoparticle-Plasma Interactions in Dusty Non-Thermal Plasmas by Nanoparticle Probes and Online Aerosol Characterization Open
Research Objectives The goal of this research project is to understand the nature of charge interactions between plasmas and aerosol particles. Specifically, the project has the following objectives: 1) Study the effect of solid nanopartic…
View article: The 2022 Plasma Roadmap: low temperature plasma science and technology
The 2022 Plasma Roadmap: low temperature plasma science and technology Open
The 2022 Roadmap is the next update in the series of Plasma Roadmaps published by Journal of Physics D with the intent to identify important outstanding challenges in the field of low-temperature plasma (LTP) physics and technology. The fo…
View article: Enhancing charging and capture efficiency of aerosol nanoparticles using an atmospheric-pressure, flow-through RF plasma with a downstream DC bias
Enhancing charging and capture efficiency of aerosol nanoparticles using an atmospheric-pressure, flow-through RF plasma with a downstream DC bias Open
(2020). Enhancing charging and capture efficiency of aerosol nanoparticles using an atmospheric-pressure, flow-through RF plasma with a downstream DC bias. Aerosol Science and Technology: Vol. 54, No. 11, pp. 1249-1254.
View article: Understanding the depletion of electrons in dusty plasmas at atmospheric pressure
Understanding the depletion of electrons in dusty plasmas at atmospheric pressure Open
The nucleation and growth of NPs in the gas phase using atmospheric-pressure plasma systems is an important approach to synthesizing novel dimensionally-controlled materials. Here, we investigated the effect of the NPs on a typical type of…
View article: Electrostatic forces alter particle size distributions in atmospheric dust
Electrostatic forces alter particle size distributions in atmospheric dust Open
Large amounts of dust are lofted into the atmosphere from arid regions of the world before being transported up to thousands of kilometers. This atmospheric dust interacts with solar radiation and causes changes in the climate, with larger…
View article: Microplasmas for Advanced Materials and Devices
Microplasmas for Advanced Materials and Devices Open
Microplasmas are low‐temperature plasmas that feature microscale dimensions and a unique high‐energy‐density and a nonequilibrium reactive environment, which makes them promising for the fabrication of advanced nanomaterials and devices fo…
View article: Electrically Conductive, Reduced Graphene Oxide Structures Fabricated by Inkjet Printing and Low Temperature Plasma Reduction
Electrically Conductive, Reduced Graphene Oxide Structures Fabricated by Inkjet Printing and Low Temperature Plasma Reduction Open
Here, an environmentally‐friendly and scalable process is reported to synthesize reduced graphene oxide (RGO) thin films for printed electronics applications. The films are produced by inkjet printing GO flakes dispersed binder‐free in aqu…
View article: Electrostatic forces alter particle size distributions in atmospheric dust
Electrostatic forces alter particle size distributions in atmospheric dust Open
Large amounts of dust are lofted into the atmosphere from arid regions of the world before being transported up to thousands of kilometers. This atmospheric dust interacts with solar radiation causing changes in the climate, with larger-si…
View article: Catalyst-free, highly selective synthesis of ammonia from nitrogen and water by a plasma electrolytic system
Catalyst-free, highly selective synthesis of ammonia from nitrogen and water by a plasma electrolytic system Open
Lightning in a bottle: Plasma enables selective, electrolytic production of ammonia from nitrogen and water.
View article: Electrostatic charging of wind-blown dust and implications on dust transport
Electrostatic charging of wind-blown dust and implications on dust transport Open
It is well known that electric fields occur in wind-blown dust, due to the triboelectric charging of particles as they collide. Triboelectric charging, or contact electrification, is a poorly understood and complex phenomenon. It is especi…
View article: Characterization of the state of nanoparticle aggregation in non-equilibrium plasma synthesis systems
Characterization of the state of nanoparticle aggregation in non-equilibrium plasma synthesis systems Open
Non-equilibrium plasmas offer a unique environment for nanoparticle synthesis. Particles are homogeneously nucleated and grow at near room temperature as a result of non-thermal decomposition of vapor precursors by electrons and other plas…
View article: Lightning under water: Diverse reactive environments and evidence of synergistic effects for material treatment and activation
Lightning under water: Diverse reactive environments and evidence of synergistic effects for material treatment and activation Open
International audience
View article: Dependence of triboelectric charging behavior on material microstructure
Dependence of triboelectric charging behavior on material microstructure Open
We demonstrate that differences in the microstructure of chemically identical materials can lead to distinct triboelectric charging behavior. Contact charging experiments are carried out between strained and unstrained polytetrafluoroethyl…