NIST UNIVERSITY
Institute Park, Berhampur, Odisha-761008, India

Biswajit Panda

Dr. Biswajit Panda

Assistant Professor

Department of Physics (SCHOOL OF SCIENCE)

biswajit.panda@nist.edu
1234567890
ATR - 214

Education

M.Sc. Physics in Physics
Utkal University, Bhubaneswar
2018-05-01
B.Sc. Physics in Physics
Fakir Mohan Autonomous College, Balasore
2016-05-01
PhD in Physics
S N Bose National Centre for Basic Sciences(University of Calcutta)
2024-02-08

Work Experience

Assistant Professor
NIST University
19/06/2024 - 09/02/2026

Research Interests

  • Development of trace gas monitoring system, Soil enzyme activity.

Publications

  1. A mid-infrared (mid-IR) dual gas sensor was developed based on the scanned wavelength modulation spectroscopy combined with the second harmonic (2f) detection strategy. A continuous wave external cavity quantum cascade laser (EC-QCL) was utilized as the mid-IR light source operating at 6.2 µm, coupled with an astigmatic multipass gas cell to enhance both sensitivity and selectivity. A pair of interference-free rovibrational transitions of NO2 and NH3 at 1613.3398 cm−1 and 1613.3708 cm−1, respectively, were simultaneously probed in a single QCL scan of 0.10 cm−1. Wavelength modulation was achieved by applying a high-frequency sine wave to the QCL input, and the signal was demodulated using a lock-in amplifier. The experimental parameters were calibrated, and under the optimized conditions, the sensor performance was investigated by measuring the concentrations of NH3 and NO2 in two distinct gas mixtures. System stability was assessed using Allan–Werle deviation analysis and the minimum detection limits were determined to be 10.47 ppb for NO2 and 9.15 ppb for NH3. This dual gas sensor demonstrates significant potential for applications in environmental monitoring and air quality management.