# On the Use of Laser-Induced Graphene (LIG) in the Development of Chemoresistive Gas Sensors

## TL;DR

This paper reviews how laser-induced graphene is used to create affordable and efficient gas sensors.

## Contribution

The paper provides a comprehensive overview of laser-induced graphene's role in chemoresistive gas sensors from 2014 to 2025.

## Key findings

- Laser-induced graphene (LIG) is a low-cost method for producing chemoresistive gas sensors.
- Incorporating materials like nanoparticles or polymers into LIG improves sensor performance.
- LIG-based sensors can be tailored for sensitivity and selectivity in gas detection.

## Abstract

In recent years, two-dimensional (2D) materials have attracted growing attention for their application in chemoresistive gas sensors. Among these materials, graphene stands out due to its exceptional electrical, mechanical, and chemical properties. A simple and low-cost method for producing graphene involves the use of a laser to induce its formation on carbon-rich substrates, such as polyimides. This technique, first introduced in 2014, has been successfully applied in the fabrication of various types of sensors, including pressure sensors, temperature sensors, biosensors, and gas sensors. For chemoresistive gas sensors, laser-induced graphene (LIG) has been used either as an electrode or as part of the nanocomposite forming the active sensing layer. Moreover, this technology has allowed the use of heating elements. Sensing performance, including sensitivity and selectivity, can be tailored by incorporating different materials into the nanocomposite, such as metallic nanoparticles, metal oxides, or conductive polymers. These modifications can be implemented using low-cost and scalable fabrication methods, making this approach highly suitable for the development of affordable and efficient gas sensors. In this contribution, we present a comprehensive overview of the contributions, reported from the proposal of LIG technology in 2014 to 2025, about the use of this fabrication process in the development of chemoresistive gas sensors.