This is the accepted version of the article:
Merkoçi, Arben. «Graphene-based biosensors». 2D Materials, Vol. 7, issue 4
(Oct. 2020), art. 40401. DOI 10.1088/2053-1583/aba3bf


This version is available at https://ddd.uab.cat/record/236027

under the terms of the               license
This is the accepted version of the article:

Merkoi A.. Graphene-based biosensors. 2D Materials, (2020).
7. 040401: - . 10.1088/2053-1583/aba3bf.

Available at: https://dx.doi.org/10.1088/2053-1583/aba3bf
                                              Editorial

                                          Special Issue

                              Graphene-based Biosensors
Arben Merkoçi
Catalan Institute of Nanoscience and Nanotechnology (ICN2), CSIC and The Barcelona Institute of
Science and Technology, Campus UAB, Bellaterra, 08193 Barcelona, Spain.
ICREA - Institucio Catalana de Recerca i Estudis Avançats, 08010 Barcelona, Spain
E-mail: arben.merkoci@icn2.cat


Since the groundbreaking experiments related to the two-dimensional (2DMs) material graphenei by
Andre Geim and Kostya Novoselov the research and development in this area has increased in an
impressive mode. Their interesting mechanical, electrical and optical properties combined with the
known chemistry and the variety of their modification strategies have put 2D materials in the focus of
biosensing community in addition to other application fields. The various forms of 2D materials in
general and particularly those of graphene produced by physical, chemical or mechanical ways have
shown to be very attractive as building blocks for sensors and biosensors.

This special issue gathers the recent tendencies in the application of various 2D materials in sensing
and biosensing platforms.

The issue includes several research and review articles that cover interesting aspects related to the
application of 2D materials in chemical sensors as well as biosensing applications for diagnostics and
other areas. Graphene, as the first reported 2D materials, has a special attention in this special issue.
Various forms of graphene materials from CVD to exfoliated one have been attracting the interest in
biosensing field. Selective stamping of laser scribed reduced graphene oxide (rGO), hybrid graphene-
gold nanoparticles, dopamine-functionalized GO, selenium modified graphene or even graphene-
oxide-based molecular diagnostics for a broad range of applications that go from gases and pH
detection to health related diagnostics (diseases such as hepatiis B, Zika and dengue viruses, Lyme
etc.), food analysis and other industrial applications are included.

A special attention is given also to other 2D materials that are emerging due to their attractive and
advantageous properties with interest for biosensing applications. A molybdenum disulphide (MoS2)-
enabled optoelectronic biosensor for application in peptide detection or in-situ imaging of bacteria is
also part of this special issue. In addition, the photoluminescence of CVD-grown MoS2 modified by pH
with interest for biological sensing as well as tungsten disulphide (WS2) combined with graphene in a
battery-free wireless photosensor on paper also are also included.

I wish this special issue will serve to 2D Materials readers being very useful to them to learn about the
great capabilities 2D materials offer in the design of innovative biosensors for various applications.
The review and research articles will be very useful for the evaluation of the state of the art of 2D
Materials-based biosensing application as well as to inspire new ideas for research and application in
this very interesting field.

Acknowledgments
ICN2 is funded by the CERCA programme / Generalitat de Catalunya and the Severo Ochoa Centres of
Excellence programme and by the Spanish Research Agency (AEI, grant no.SEV-2017-0706). EU
GRAPHENE FLAGSHIP Core 3 (Reference: 785219) also is acknowledged.

i
    Novoselov, K. S. et al. Science 306, 666–669 (2004)