Reduced Graphene Oxide Tattoo as Wearable Proximity Sensor

12/10/2020
by   Vaishakh Kedambaimoole, et al.
0

The human body is punctuated with wide array of sensory systems that provide a high evolutionary advantage by facilitating formation of a detailed picture of the immediate surroundings. The sensors range across a wide spectrum, acquiring input from non-contact audio-visual means to contact based input via pressure and temperature. The ambit of sensing can be extended further by imparting the body with increased non-contact sensing capability through the phenomenon of electrostatics. Here we present graphene-based tattoo sensor for proximity sensing, employing the principle of electrostatic gating. The sensor shows a remarkable change in resistance upon exposure to objects surrounded with static charge on them. Compared to prior work in this field, the sensor has demonstrated the highest recorded proximity detection range of 20 cm. It is ultra-thin, highly skin conformal and comes with a facile transfer process such that it can be tattooed on highly curvilinear rough substrates like the human skin, unlike other graphene-based proximity sensors reported before. Present work details the operation of wearable proximity sensor while exploring the effect of mounting body on the working mechanism. A possible role of the sensor as an alerting system against unwarranted contact with objects in public places especially during the current SARS-CoV-2 pandemic has also been explored in the form of an LED bracelet whose color is controlled by the proximity sensor attached to it.

READ FULL TEXT
research
07/06/2023

Touch, press and stroke: a soft capacitive sensor skin

Soft sensors that can discriminate shear and normal force could help pro...
research
03/27/2023

Automatic breach detection during spine pedicle drilling based on vibroacoustic sensing

Pedicle drilling is a complex and critical spinal surgery task. Detectin...
research
07/12/2023

GRAINS: Proximity Sensing of Objects in Granular Materials

Proximity sensing detects an object's presence without contact. However,...
research
10/26/2022

The Contribution of Human Body Capacitance/Body-Area Electric Field To Individual and Collaborative Activity Recognition

The current dominated wearable body motion sensor is IMU. This work pres...
research
10/06/2019

Enhanced Human-Machine Interaction by Combining Proximity Sensing with Global Perception

The raise of collaborative robotics has led to wide range of sensor tech...
research
02/18/2019

Commodity RGB-D Sensors: Data Acquisition

Over the past ten years we have seen a democratization of range sensing ...
research
09/23/2022

Design of a Multimodal Fingertip Sensor for Dynamic Manipulation

We introduce a spherical fingertip sensor for dynamic manipulation. It i...

Please sign up or login with your details

Forgot password? Click here to reset