Research

(NANOSCIENCE AND NANOTECHNOLOGY):

I. Semiconducting Two-Dimensional Materials:

  • Tuning the band gap of semiconducting 2-D material by various techniques: electron  doping, photothermal heating, polymer assembly on the sheet surface.
  • Studying the optical properties using ultra-high-resolution imaging and spectroscopic techniques.
  •  Developing new techniques to produce semiconducting 2-D materials.

II. Catalysis and electrocatalysis:

  • Catalysis using nano-reactors (hollow nanoparticles of single shell, double shell, and rattle structures).
  • Catalysis on active nanocatalysts with sharp corners and edges.
  • Photocatalysis by semiconductor nanocatalysts and hybrid metallic-semiconductor nanoparticles.
  • Electrocatalysis by single metallic and multiple metallic nanoparticles of different structures.
  • Mechanistic studies of colloidal nanocatalysis (homogenous or heterogeneous).

III. Spectroscopy and photo-physics of nanomaterials:

  • Real-time surface-enhanced Raman spectroscopy (SERS).
  • Attenuated total reflection IR spectroscopy.
  • Time-resolved infrared (rapid and step scan) and fluorescence spectroscopy.
  • Femtosecond pump-probe transient absorption spectroscopy.

IV. Assembly of nanomaterials:

  • Fabrications of 2D arrays from the colloidally prepared nanoparticles with different structures on different substrates.
  •  Monolayer assembly of hybrid organic polymer-inorganic nanoparticles.

V. Energy:

  • Studying the optical and optoelectrical properties of a monolayer assembly of hybrid conjugated polymers-inorganic plasmonic nanoparticles (improving the efficiency of organic solar cells using plasmonic nanoparticles).
  • Study the excitionic interaction in semiconducting 2D materials integrated with conjugated polymer used in organic solar cell.

VI. Synthesis of Nanoparticles:

  • Size- and shape-controlled synthesis of nanoparticles of different compositions (single and multiple metals, semiconductors, and hybrid metallic-semiconductor) and structures (solid, hollow, and rattle).
  • Using new techniques to control nanocrystal growth based on stirring rate, temperature, capping agents, and reducing agents to prepare anisotropic nanoparticle shapes.

VII. Plasmonic Nanosensing:

  • Sensing of biological systems and hazardous materials by plasmonic nanoparticles chips.
  • Optomechanical and optoelectrical switching by plasmonic nanoparticles.
  • Simulation of the surface plasmon resonance spectrum and the plasmon field of plasmonic nanoparticles.