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Pathology with Paper and Pencil. [Ref: P. Mandal, R. Dey, S. Chakraborty, Lab Chip, 2012, 12, 4026-4028]. Normal filter paper. Filter paper soaked in photoresist ; prebaked. Mask for UV exposure. Paper channel. Fabrication of Complex Structures on Paper.
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Pathology with Paper and Pencil [Ref: P. Mandal, R. Dey, S. Chakraborty, Lab Chip, 2012, 12, 4026-4028] Normal filter paper Filter paper soaked in photoresist; prebaked Mask for UV exposure Paper channel
Fabrication of Complex Structures on Paper Zigzag design to investigate mixing H-channel designed to investigate blood cell separation 13 11 9 7 5 3 1 12 10 8 6 4 2
Colorimetric Detection of Blood Glucose and Multiplexing Glucose detection process Calibration with standard glucose samples Brown color developed Paper microchannel Glucose Reagent Blood Sample Separation + Reaction Reagents • Whatman grade 1 • Length = 20 mm • W = 3 mm, Φ = 7 mm Plasma separated from RBC Blood sample to source pad Antibody (ABO) Calibration curve with Standard glucose Image Acquisition Image Processing Result Display Protein assay Anti A-B Multiplexing: • Simultaneous detection of multiple analytes like glucose and protein etc. • Blood group Identification Anti O Glucose assay
Paper-based Kits for Antimicrobial Susceptibility Assays Prototype: Indian patent file no: 201631023867 Working protocol: Microfluidics and Microscale Transport Processes Laboratory
Towards a Commercializable Device Functional block diagram of the med Colorimeter. Paper Based Micro-fluidic Sensor with Blood Sample Micro-controller/ Digital Signal Processor LED based calibrated light source Calibrated photo detector Trans-impedance amplifier + filters Analog to Digital Converter Smart Phone Bluetooth Low Energy Transceiver A/Prof. Sudip Nag Prof. Suman Chakraborty
Prototype Design Paper Based Blood Sample Sensor Battery Calibrated LED with Driver and Optical Detector Opaque Enclosure Bluetooth Low Energy Transceiver
Acknowledgement Faculty Member Dr. Sudip Nag Department of E&ECE IIT Kharagpur, INDIA Researchers and Students Dr. Shantimoy Kar (former Ph.D student) SujayBiswas (current Ph.D student)
Acknowledgement Researchers and Students Dr. Shantimoy Kar SujayBiswas