By 11 months ago
This research focus of this project is on Bio-MEMS, Bio-NEMS and Biomedical Engineering using multidisciplinary approaches to develop innovative solutions for biological application and public health especially cancer cell detection. The major topics of interest in this project are on design, modelling, simulation and characterization of nano-structures for biological manipulations and application using electrical methods like Electroporation for biomolecules delivery, irreversible electroporation for cancer cell lysis (killing), protein extraction from cells using electroporation and cancer cell detection using electrical methods at low voltages.
By 11 months ago
Fractals in Photonics and Plasmonics
The collective electromagnetic response of metal/dielectric particles arranged in fractal aperiodic arrays with sub-wavelength inter-particle spacing has the potential to provide a novel angular and frequency dependence in sensing applications. In this work we would like to analyse the light scattering and orbital angular momentum spectra of various fractal patterned aperiodic arrays of nanoparticles. This study is expected to open novel opportunities for the manipulation of optical properties of fractal based deterministic aperiodic nanostructures for a range of emerging engineering applications in singular optics, secure communication, optical cryptography, and optical sensing.
By 2 years ago
Flat Diffractive Optics
This project targets an emerging area of ultrathin structures (i.e., thickness << wavelength) named metasurfaces, which provide an avenue to replace the bulk optical components (like lenses, spiral phase plates, waveguides, wavelplates etc) with two highly efficient dimensional (2D) nanostructures. Development of such two-dimensional optical components find applications in integrated photonics. The mandate of this project also includes the exploration of new possible dielectric materials which can be employed for such flat optical nano-devices. The purpose is not only to provide an alternative to novel metals but also to exhibit elevated performance in terms of transmission efficiency. Design and simulations of nanostructured devices to unveil different optical phenomena such as lensing, imaging, holography, polarization etc are performed in ITU. Corresponding fabrications and characterizations of these devices are carried-out overseas (in POSTECH and in NUS). This project is led by Dr. Qaism and so far, he along with his staff/students/collaborators, has published 7 journal papers including at prestigious venues such Advanced Materials (IF ≈ 17.5), Advanced Functional Materials (IF ≈ 13), Advanced Optical Materials (IF ≈ 5) and Scientific Reports (IF ≈ 5).
By 2 years ago
Nano-scaled Optical Absorbers
Optical absorbers find usages in a broad range of applications across the electromagnetic spectrum, including photovoltaic and photochemical cells, photodetectors, optical filters, stealth technology, and thermal light sources. Owing to emerging area of integrated photonics, the development of nanoscale absorbers and photovoltaic cells is inevitable. Such absorbers are designed to achieve almost unity absorption on a particular wavelength or on a broadband scale. Their performance in the visible regime is of main concern, as visible regime covers the highest energy region of solar spectra. This project is supervised by Dr. Qasim where main objective is to develop new designs and to explore new possible materials for nano-scaled absorber and solar cells. Mr. Ahsan Sarwar Rana (PhD Scholar) and Muhammad Faizan (MS Scholar) are working on this project.