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Fachbereich Physik - Institut für Experimentalphysik

Student assistant (40 h/month) (m/f/d) limited to 30.04.2022 (end of project) reference code: ERC-2D-SHK-1

Bewerbungsende: 13.04.2021

We are a research group in the Physics Department of Freie Universität specializing in nanoscale electronics and optoelectronics. Our main focus is two-dimensional atomic crystals – a class of materials that are only atoms thick. These include: graphene, atomically thick form of carbon with record electrical conductivity, thermal conductivity, and strength; monolayer transition metal dichalcogenides (MoS2, WSe2, MoSe2), semiconductors strongly interacting with light; and monolayer boron nitride (BN), an atomically-smooth insulator material. Our overarching goal is to answer the following questions: How does one controllably create, pattern, and manipulate two-dimensional atomic crystals? What happens to interacting electrons that are confined in two dimensions and are governed by the laws of quantum mechanics? Can we use nanoelectromechanical devices based on graphene to sense ultrasmall forces and weigh ultralight objects? Our main experimental tools include nanofabrication, transport measurements, static and time-resolved optoelectronic measurements.

Job description:
The student assistant will join the Bolotin group to support research work within the ERC project “Strained 2D materials”. The specific tasks of the project include:
- nanofabrication of suspended two-dimensional materials
- fabrication of micron-sized suspended graphene and other two-dimensional materials
- creation of electrical contacts for these samples by using a combination of electron beam lithography and metal evaporation.
The samples will later be used in experiments exploring the effects of mechanical strain in these materials. In the last stage of the project, the student assistant will work with an advanced optical system to carry out single-photon measurements probing the effect of strain in 2D materials.

- At least three completed semesters in physics (Bachelor)
- Familiarity with 2D materials (e.g. graphene, MoS2)
- Familiarity with advanced photonic measurements
- Familiarity in working with low-yield devices
- Interest in nanofabrication

Stellenauschreibung vom: 05.04.2021