Research Interests:

l  Artificial Olfaction/Gustation technologies: Detection of complex analytes in gaseous or liquid environments using e-nose/tongue systems.

l  Development of e-tongue systems:

n   Development of advanced flexible hybrid sensor arrays (Voltammetric; Impedimetric; Potentiometric).

n   Enhancing sensor array reliability through functionalization with nanomaterials.

n   Development of machine learning algorithms based on feature and decision fusion for multi-principle electronic tongue systems.

l  Development of e-nose systems:

n   Development of advanced miniature gas sensor arrays (Impedimetric; Chemoresistive).

n   Development of ultra-low concentration (ppb-ppm level) VOCs measurement systems.

n   Development of machine learning algorithms for e-noses: application in classification, spoilage diagnosis, and adulteration detection in edible meats.

l  All-solid-state ion-selective sensors: Development and reliability optimization.

l  Impedance-based Thin Film Sensors: Development and reliability optimization.

l  Development of Flexible Supercapacitor Energy Storage Devices.

l  Synthesis and optimization of nanocomposites for enhancing sensor performance.

l  Manufacturing and parameter optimization of flexible sensors based on laser-induced graphene (LIG) technology.

l  Feature Extraction and Evaluation for Impedance Spectroscopy and Electrochemical Methods.

l  Development of machine learning frameworks for sensor array signal processing.

l  Sensor applications:

n   Nutritional Metal Ions: K+, Mg2+, Ca2+.

n   Volatile Organic Compounds (Medical VOCs): Acetone, Isoprene.

n   Volatile Organic Compounds (Environmental VOCs): Formaldehyde, Ammonia, Methanol, Ethanol, Isopropanol.

Expertise:

l  Nanocomposites for sensors:

n   Physical characterization: AFM, Raman, FTIR, UV-vis.

n   Electrochemical characterization: Impedance spectroscopy, Cyclic voltammetry.

n   Two-dimensional Nanocomposites: Graphene, Black Phosphorene, Molybdenum Disulfide.

n   Nanoparticles: Au, Ag, Cu, TiO2 nanoparticles.

n   Conductive Polymers: PANI, PEDOT:PSS, PDAC.

l  Sensor devices/arrays:

n   Flexible device manufacturing.

n   Laser-induced graphene electrodes.

n   Impedimetric, Potentiometric, Cyclic voltammetry, Square wave voltammetry, Differential pulse voltammetry.

n   Sensing performance testing.

n   Reliability analysis and optimization.

l  Machine Learning:

n   Sensor signal preprocessing.

n   Feature extraction and evaluation.

n   Sensor array signal analysis:

n   Feature and decision fusion.