Slaven GARAJPhD in Physics, Ecole Polytechnique Federale de Lausanne, Switzerland
Prof. Garaj explores nanoscale phenomena emerging at the interface of solid-state devices and soft-matter systems. He is interested in behaviour of water molecules and ions in atomic-scale confinements; control and analysis of individual biomolecules using physical methods; and electrical and structural properties of 2D materials. The research is often guided by the desire to address a real technological challenge, and it includes:
- Ultra-fast, inexpensive DNA sequencing using physical methods.
- Nanopore devices for detection, fingerprinting and sequencing of individual proteins.
- Electrical sensors based on 2D materials.
- 2D materials as next-generation membranes for filtration and water desalination.
Left: Graphene nanopore for detection and analysis of individual DNA molecules.
Right: Ions sieving properties of graphene membranes for desalination rely on ionic size exclusion and charge rejection between the graphene layers.
A. Esfandiar et al., “Size effect in ion transport through angstrom-scale slits”, Science 358, 511-513 (2017).
S. Hong et al., “Scalable Graphene-Based Membranes for Ionic Sieving with Ultrahigh Charge Selectivity”, Nano Letters 17, 728 (2017).
K. Bogaert et al., “Diffusion-Mediated Synthesis of MoS2/WS2 Lateral Heterostructures”, Nano Letters 16, 5129 (2016).
B. Radha et al., “Molecular transport through capillaries made with atomic-scale precision”, Nature 538, 222 (2016).
S. Garaj et al., “Molecule-hugging graphene nanopores”, Proc. Natl. Acad. Sci. U.S.A. 110, 12192 (2013).
S. Garaj et al., “Graphene as a subnanometre trans-electrode membrane”, Nature 467, 190 (2010).
D. Branton et al., “The potential and challenges of nanopore sequencing”, Nat. Biotechnol. 26, 1146 (2008).