Barbaros ÖZYILMAZ
PhD, New York University, USA (2004)
Professor, Head of MSE

Email: msehead@nus.edu.sg
Office: S13-02-10
Tel: +65 6516 3325

Basic Research Interests

  • Synthesis of Novel 2D materials, e.g. monolayer amorphous carbon (MAC), black phosphorous, and nano-porous graphene foam
  • Fundamental studies of spin, charge and phonon transport in graphene, phosphorene and 2D van der Waals heterostructures.
  • Semiconductor device application of graphene and other 2D crystals, e.g. Ferroelectric-graphene non-volatile memory, Black phosphorus effect transistor, Spin-FET

Applied Research Interests

  • Process and synthesis development of 2D materials for scale up and benchmarking.
  • 2D amorphous Carbon and its applications, e.g. diffusion barrier for interconnects, oxidization barrier for hard discs.
  • Energy storage applications of nano-porous carbon composites an, e.g. supercapacitors.
  • Graphene based biomedical applications, IR detectors, flexible conductors.

Research Highlights

Synthesis and properties of free-standing monolayer amorphous carbon. Nature 577, 199-203 (2020). World’s first atomically thin amorphous carbon film. The amorphous structure has widely varying atom-to-atom distance unlike crystals. This is because of the random arrangement of five-, six-, seven- and eight-carbon rings in a planar carbon network, leading to a wide distribution of bond lengths (in Å) and bond angles.

IP Developments

 4 provisional patent applications, 7 national stage pending: 36 (12 unique) patents granted.

Licensed Patents

Licensee: Spin Memory, Inc., Fremont, California

Foundational IP for Spin Memory (previously Spin Transfer Technologies), a company established in 2011 by Allied Minds and New York University. The company raised $70 million in 2015 and in November 2018, the company announced its $52 million series B funding round.

Inventors: Kent, A. D.; Garcia, E. G.; Oezyilmaz, B.
Title: High Speed Low Power Magnetic Devices Based on Current Induced Spin-Momentum Transfer.
Patent Details: United States Pat. 6,980,469, 24/12/2005. United States Pat. 7,170,778, 30/01/2007. United States Pat. 7,573,737, 31/10/2007. PCT Pat. PCT/US2004/02689, 18/08/2004. Canada Pat. 2535965, 17/02/2006. European Pat. 2004781554, 20/03/2006. Japan Pat. 2006524031, 17/02/2006.

Inventors: Oezyilmaz, B.; Kent, A. D.
Title: Electronic Devices Based on Current Induced Magnetization Dynamics in Single Magnetic Layers.
Patent Details: United States Pat. 7,986,544, 26/07/2011. European Pat. EP20070874397, 5/11/2007. PCT Pat. PCT/US07/83676, 5/11/2007.

Patents Jointly Developed with Fuji Electric

Inventors: Oezyilmaz, B.; Ng, L. W.; Stier, A. V.; Martin Fernandez, I.; Castro Neto, A. H.
Title: Graphene as a Protective Overcoat for Magnetic Media Without the Use of Nucleation Layer
Patent Details: PCT Pat. PCT/SG2015/000117, 07/04/2015.

Inventors: Oezyilmaz, B.; Stier, A. V.; Toh, C. T.; Castro Neto, A. H.
Title: A Method of Protecting a Magnetic Layer of a Magnetic Recording Medium
Patent Details: United States Pat. 15/223,915, 29/07/2016

Selected Publications

  • Colloquium: Spintronics in graphene and other two-dimensional materials; A. Avsar, H. Ochoa, F. Guinea, B. Özyilmaz, B. J. van Wees, I. J. Vera-Marun.; Review of Modern Physics 92, 021003 (2020).
  • Synthesis and properties of free-standing monolayer amorphous carbon; CT Toh, H Zhang, J Lin, AS Mayorov, YP Wang, CM Orofeo, DB Ferry, H Andersen, N Kakenov, Z Guo, IH Abidi, H Sims, K Suenaga, ST Pantelides, B Özyilmaz.; Nature 577, 199-203 (2020).
  • Van der Waals bonded Co/h-BN contacts to ultra-thin Black Phosphorus devices; Ahmet Avsar, Jun You Tan, Xin Luo, Khoong Hong Khoo, Yuting Yeo, Kenji Watanabe, Takashi Taniguchi, Su Ying Quek, and Özyilmaz Barbaros. Nano Lett., 2017, 17(9), pp 5361–5367.
  • Gate-tunable black phosphorus spin valve with nanosecond spin lifetimes; Avsar, A., Jun Y. Tan, Kurpas, M., Martin, G., Watanabe, K., Taniguchi T., Fabian, J., Özyilmaz B.; Nature Physics volume13, pages888–893 (2017).
  • Controlling many-body states by the electric field effect in a two-dimensional material; Li, L. J., O’Farrell, E. C. T., Loh, K. P., Eda, G., Özyilmaz, B., and Castro Neto, A. H.; Nature 529, 185–189 (2016).
  • Transport properties of pristine few-layer black phosphorus by van der Waals passivation in inert atmosphere; Doganov, R. A., O’Farrell, E. C. T., Koenig, S. P., Yeo, Y., Ziletti, A., Carvalho, A., Campbell, D. K., Coker, D. F., Watanabe, K., Taniguchi, T., Castro Neto, A. H., and Özyilmaz, B.; Nat. Commun. (2015).
  • Electric field effect in ultrathin black phosphorus; SP Koenig, RA Doganov, H Schmidt, AH Castro Neto, B Özyilmaz.; Applied Physics Letters 104 (10), 103106 (2014).
  • Length-dependent thermal conductivity in suspended single-layer graphene; X Xu, LFC Pereira, Y Wang, J Wu, K Zhang, X Zhao, S Bae, CT Bui, R Xie, JTL Thong, BH Hong, KP Loh, D Donadio, B Li, B Özyilmaz.; Nature communications 5 (1), 1-6 (2014).
  • Colossal enhancement of spin–orbit coupling in weakly hydrogenated graphene; J Balakrishnan, GKW Koon, M Jaiswal, AHC Neto, B Özyilmaz.; Nature Physics 9 (5), 284-287 (2013).
  • Graphene for controlled and accelerated osteogenic differentiation of human mesenchymal stem cells; TR Nayak, H Andersen, VS Makam, C Khaw, S Bae, X Xu, P-L R Ee, J-H Ahn, BH Hong, G Pastorin, B Ozyilmaz.; Acs Nano 5 (6), 4670-4678 (2011).

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