Research Areas

We carry out multidisciplinary, fundamental and applied research in physics. Our current research are in the following areas :

(A) Compact plasmas confined by a dipole magnet

Some recent research articles

  • Waves and instabilities in dipole plasmas (link)

  • Diffusion, particle, and energy balance (link)

(B) Plasmas created at cryogenic temperatures: Cryo-plasmas

Some recent research articles

  • Collisional cooling in a cryo-plasma (link)

  • Diffraction of cryo-plasma (ion) beams (link)

(C) Plasma-based creation of focused ion beams

Some recent research articles

  • Generation of quantum beams by controlled guiding and focusing through micro-glass capillaries (In progress)

  • Nonlinear demagnification in plasma-based charged particle optics (link)

  • Momentum transfer and creation of sub-micron structures (link)

Earlier Research

  • Threshold energy, hysteresis, and high current ion beam guiding through a micro-glass capillary

  • Ion energy distribution near a plasma meniscus

  • Rapid measurement of charged particle by a current flux grating

  • Microwave guiding and intense plasma generation at subcutoff dimensions

(D) Modification of electrical and surface properties of matter by plasma-based low-energy ion beams

Some recent research articles

  • Field emission of Atomically Heterogeneous Surfaces (link)

  • Optical properties of atomically heterogeneous systems (link)

Earlier Research

  • Wetting in atomically heterogeneous systems

  • Micro-resistive patterning through sub-Debye length plasma apertures

  • Sheet resistance and Debye temperatures in atomically heterogeneous systems

  • Micron-focused ion beamlets

(E) Atmospheric pressure microplasmas

Some recent research articles

  • Fluctuations and strong field effects (link1, link2)

(F) Wave interaction with multicusp plasmas

Earlier Research

  • Wave penetration and screening in bounded supercritical plasmas

  • Dispersion and waves in bounded plasma with subwavelength inhomogeneities

  • Birefringence and the Couton Mouton effect

  • Electron plasma waves in large amplitude electromagnetic pulses

  • Electron trapping in electromagnetic standing waves

  • Interpulse plasma versus conventional afterglows

  • Evidence of ion heating and the Buneman instability

  • Physics of plasmas containing negative ions

(G) Wave induced plasma initiation

Earlier Research

  • Evolution of electron energy distribution during genesis of breakdown plasma

  • Electron random walk and the collisional cross over in presence of em waves and magnetostatic fields

  • Electron random walk in presence of em waves and the difference with classical diffusion

(H) Charged particle transport in nano-gaps

Earlier Research

  • Coexistence of tunelling and displacement currents in nanogaps driven with ac fields

  • Transition from Fowler-Nordhiem field emission to space charge limited flows

  • Space charge limited flows and quantum Child-Langmuir's law