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.
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.
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.