Sub-ppt gas detection with pristine graphene

By Gugang Chen, T. Paronyan, A. Harutyunyan. 2012

203 citations recorded by the source corpus.

Graphene is widely regarded as one of the most promising materials for sensor applications. Here, we demonstrate that a pristine graphene can detect gas molecules at extremely low concentrations with detection limits as low as 158 parts-per-quadrillion (ppq) for a range of gas molecules at room temperature. The unprecedented sensitivity was achieved by applying our recently developed concept of continuous in situ cleaning of the sensing material with ultraviolet light. The simplicity of the concept, together with graphene’s flexibility to be used on various platforms, is expected to intrigue more investigations to develop ever more sensitive sensors.

Subfields: Electrical and Electronic Engineering, Materials Chemistry

View Paper: https://www.semanticscholar.org/paper/11534dcc84cc741e1d7429e201721cf0c59cca47

How researchers see this paper

The researchers whose trusted networks rank it highest, strongest advocate first. Every researcher gets a different order.

In Electrical and Electronic Engineering

1. I. Torres
2. Seyed Mohammad Javad Zeidi
3. Sadegh Mehdi Aghaei
4. M. Monshi
5. V. Mittal
6. I. Calizo

In Materials Chemistry

1. I. Torres
2. Olga Kazakova
3. Sundaram Swaminathan
4. K. Singh
5. Seyed Mohammad Javad Zeidi
6. Sadegh Mehdi Aghaei
7. M. Monshi
8. S. H. Varghese

Citations in the corpus

• Frontiers of graphene and 2D material-based gas sensors for environmental monitoring (2020, methodology): “2 ppt 200–400 ppt [94] Mechanically Exfoliated Gr GFET NH3 ~60 3600 50 ppm 6–200 ppm [202] CVD Gr GFET NH3 ~120 ~600 550 ppm n/a [203] Epitaxial Gr Chemiresistor NO2 ~7200 2.”
• DFT study of adsorption behavior of NO, CO, NO2, and NH3 molecules on graphene-like BC3: A search for highly sensitive molecular sensor (2018, background): “ith high selectivity, fast recovery, high packing density, and low power consumption [3, 4]. The applicability of graphene in the field of gas sensing has been widely investigated both experimentally [5, 6, 7] and theoretically [8, 9, 10, 11, 12]. Pristine graphene shows low sensitivity toward commo”
• Two-Dimensional Materials for Sensing: Graphene and Beyond (2015, background): “[52] demonstrated the detection of a wide range of gas molecules using pristine”