Khandaker Reaz Mahmud
Current Organizations / Institutes
The organizations/institutes from the scholar's latest article
Research Subjects
Khandaker Reaz Mahmud has a total of 7 co-authors. Here are the top co-authors by number of shared publications:
- Carlos H. Mastrangelo
Department of Electrical and Computer Engineering, University of Utah, Salt Lake City, UT 84112, USA
1 shared publication - Farhan Sadik Sium
Department of Electrical and Computer Engineering, University of Utah, Salt Lake City, UT 84116, USA
1 shared publication - Hanseup Kim
Department of Electrical and Computer Engineering, University of Utah, Salt Lake City, UT 84112, USA
1 shared publication - Md. Rabiul Hasan
Department of Electrical and Computer Engineering, University of Utah, Salt Lake City, UT 84116, USA
1 shared publication - Seungbeom Noh
Department of Electrical and Computer Engineering, The University of Utah, Salt Lake City, UT, USA
1 shared publication - Steven Tran
Department of Electrical and Computer Engineering, University of Utah, Salt Lake City, UT 84116, USA
1 shared publication
Latest Publications
- Open Access
A Sub-Milliwatt Graphene-Based Thermal Conductivity Detector for On-Site Gas Analysis
This paper presents the design, fabrication, and characterization of a sub-milliwatt graphene-based micro thermal conductivity detector (µTCD) that utilizes a suspended multilayer graphene (MLG) bridge to sense volatile organic compounds (VOCs) in the gas phase based on their thermal transport properties. The graphene bridge is transferred onto a silicon chip with integrated microchannels using a photolithography-free process. By incorporating microchannel designs, this approach enables precise transfer of suspended MLG dimensions without conventional patterning steps. A key innovation of this work lies in the use of an ultra-low thermal mass suspended graphene architecture, which significantly increases temperature rise per unit input power, thereby enhancing sensitivity per unit power compared to conventional metal-based TCDs. The fabricated µTCD successfully produces chromatograms of multiple VOC species, closely matching those obtained using a standard flame ionization detector (FID). The device demonstrates an estimated limit of detection (LOD) of 190 ppm while consuming an average power of 151 µW under DC operation.
Open AccessA Sub-Milliwatt Graphene-Based Thermal Conductivity Detector for On-Site Gas Analysis
This paper presents the design, fabrication, and characterization of a sub-milliwatt graphene-based micro thermal conductivity detector (µTCD) that utilizes a suspended multilayer graphene (MLG) bridge to sense volatile organic compounds (VOCs) in the gas phase based on their thermal transport properties. The graphene bridge is transferred onto a silicon chip with integrated microchannels using a photolithography-free process. By incorporating microchannel designs, this approach enables precise transfer of suspended MLG dimensions without conventional patterning steps. A key innovation of this work lies in the use of an ultra-low thermal mass suspended graphene architecture, which significantly increases temperature rise per unit input power, thereby enhancing sensitivity per unit power compared to conventional metal-based TCDs. The fabricated µTCD successfully produces chromatograms of multiple VOC species, closely matching those obtained using a standard flame ionization detector (FID). The device demonstrates an estimated limit of detection (LOD) of 190 ppm while consuming an average power of 151 µW under DC operation.