Motivation

Over the years, there are increasing needs for the development of simple, cost-effective, portable, integrated biosensors that can be operated outside the laboratory by untrained personnel. However, to reach this goal a reliable sensor technology based on printed electronics has to be developed. Our group aims to develop and establish the field of Biosensor and Electrochemistry for Bench to Bedside diagnosis. Our goal will be the use of redox cycling-based wash-free electrochemical technique in a portable electronic device that can be operated outside the laboratory for simple and effective point-or-care testing in India for early stage disease diagnosis (i.e. cancer, malaria, dengue, tuberculosis, HIV/AIDS etc.). The main challenges of point-of-care testing require to implement complex analytical methods into low-cost technologies. This is particularly true for countries with less developed health care infrastructure. Our washing-free technique is very simple and innovative. We can develop a low-cost disposable wash-free chip and our approach will make it possible to perform highly sensitive detection of biomarkers with printed electronics. The redox cycling technology will detect several interesting targets at the same time on a printed chip. The proposed research projects are inherently cross-disciplinary, combining expertise in biosensing, electrochemistry, electronics & electrical engineering, healthcare and manufacturing, entailing close collaboration and knowledge exchange among the different labs.

Research Areas

BioMedical Devices

Information about the sample at the earliest is most crucial aspect of disease diagnostics. To enable economical disease identification we are developing portable medical devices that can reach the patients from urban to rural areas. Our focus lies on using electrochemical techniques for measurement of signals from the modified screen printed electrodes and field effect transistor based sensors.
Topics of Research
Microfluidics
Lab-on-Printed Circuit Board
SLA and FDM 3D printing
Soft Lithography
Fuel cell for self-powered biodevicesSoft Lithography
Fuel cell for self-powered biodevices

Nanomaterials

To reach the effective detection range and create surfaces that can reproduce the results in different environment and demographies. The characterisics of different materials helps us design the sensors to be reproducable and realiable for testing of different markers.
Topics of Research
Metal and metal oxide catalyst
Conductive Polymers
Nanocomposites for surface enhancement

Sensor Design and Development

Design of sensors determine their effectiveness, ease of use and ability to differentiate or sense specifically different targets. Detection of targets ranging from gas, aerosol particles to biomolecules in samples of living being, can be achieved only with various design and type of sensors. Our lab develops the material for every step from ink to material to coat on the sensor using different Technologies like sputtering, 3D printing, screen printing etc.
Topics of Research
Printable Nanoparticle Materials
Resins for printing
Field Effect Transistors
Screen Printed Electrodes
3D Printed Sensing Systems

Sensing Method Development

Different methods of detection offers various advantages but has draw backs to be solved or reduced during the process of research. We in our lab try to solve such issues, by forming new strategies for electrochemical sensing, using Machine Learning and AI to solve these problems.
Topics of Research
Electrocycling Mechanism
Identification of Bio-systems for testing
Invasive and Non-invasive detection methods
Contact Less Sensing