Solution to develop a contactless touch sensor using the printing technique

Indian scientists have provided an affordable solution to develop a low cost touch and proximity sensor commonly known as a non-contact touch sensor through printing technique.

The coronavirus pandemic has sparked efforts to make our way of life more adaptable to pandemic scenarios. Actions are naturally geared towards strategies to reduce the risk of spreading viruses, especially in public places where touch screens on self-service kiosks, ATMs and vending machines are almost inevitable.

Recently, Bengaluru-based scientists from the Center for Nano and Soft Matter Sciences (CeNS) and the Jawaharlal Nehru Center for Advanced and Scientific Research (JNCASR), autonomous institutes of the Department of Science & Technology (DST), Government of India, have set up a semi-automated production facility for the production of print-assisted patterned transparent electrodes (approximately 300 µm resolution), which has the potential to be used in advanced non-contact display technologies.

This work by the team led by Prof. GU Kulkarni and colleagues and funded by DST-Nanomission at CeNS was recently published in the journal “Materials Letters”. Dr. Ashutosh K Singh, a scientist working on this project, said, “We made a touch sensor that detects proximal or hovering touch even at a distance of 9cm from the device.”

“We are making a few more prototypes using our patterned electrodes to prove their feasibility for other smart electronics applications. These patterned electrodes can be made available to interested industries and R&D labs upon request to explore collaborative projects,” said Dr. Indrajit Mondal. , another co-author of the research.

The new low-cost patterned transparent electrodes have enormous potential for use in advanced smart electronic devices such as displays and contactless sensors. This contactless touch sensor technology could help prevent the spread of viruses that spread through contact.

(With GDP entries)