Skip to content

RESEARCH INTERESTS

Graphene

Graphene is a monolayer of carbon atoms arranged in a sheet within a hexagonal crystal lattice. Due to the material’s extraordinary mechanical, chemical, optical, and electrical properties, it has become an extremely intense field of research since the first experimental realization in 2004. Since that time, other 2D materials have been discovered and made in the lab, ranging from semi-metals, to semiconductors, to insulators. These materials are expected to change the face of technology in the 21st century.

GRAPHENE MICROPHONES​

Graphene is an obvious material of choice for microphone membranes, because it is lightweight and stiff. We made the first microphone with a graphene membrane, which outperformed microphones with traditional nickel membranes. Under optimal conditions, graphene microphones could have usable bandwidth extending to the ultrasonic part of the spectrum.

Play Video

Our original publication captured the attention of many media outlets in several languages, including:

THIN FILMS OF 2D MATERIALS​

We make thin films of 2D materials produced with liquid phase exfoliation followed by Langmuir-Blodgett assembly. Such a production method is a good option for large area low cost transparent conductors and sensors on flexible substrates for wearable electronics. We are actively investigating the sensing performance of these materials that include graphene, PtSe2, MoS2 and hBN, on the route to practical devices. These films are excellent sensors of trace gases, humidity and strain.

  • T. Tomašević-Ilić et al, Reducing sheet resistance of self-assembled transparent graphene films by defect patching and doping with UV/ozone treatment, Applied Surface Science 458, 446 (2018).
  • A. Matković et al, Enhanced sheet conductivity of Langmuir–Blodgett assembled graphene thin films by chemical doping, 2D Materials 3, 015002 (2016).

OPTICAL PROPERTIES OF 2D MATERIALS​

Although atomically thin, 2D materials can have a strong interaction with light, which is desirable for optical quantum computing and investigation of fundamental material properties. Together with colleagues at CALT in Croatia and the Institute of Physics in Belgrade, we are investigating the use of nonlinear optical microscopy to study material properties such as strain and crystal orientation.