Department of Applied Physics Dr. LUO Xin

Research Assistant Professor

Tel: (852) 27665683 Email: xin.xi.luo@polyu.edu.hk Education & Working: Postdoc National University of Singapore, 2017

Scientist Agency for Science, Technology and Research (A*STAR), 2013 Ph.D. Sun Yat-sen University, 2011 B.Sc. Sun Yat-sen University, 2006

Research Interests: Material simulation, 2D materials, Ferroelectrics, Nanoelectronics Publication: 26 H-index: 15 Sum of Times Cited 857

 

Awards and Achievements  

• Fellow of Sino-German Center for Research Promotion

• 2008, Selected participant of the 58th Meeting of Nobel Laureates for Physics in Lindau, Germany

 

Publications (selected)  

• Wei Liu,† Xin Luo,† Yang Bao,† Yan Peng Liu, Guo-Hong Ning, Ibrahim Abdelwahab, Linjun Li, Chang Tai Nai, Zhi Gang Hu, Dan Zhao, Bin Liu, Su Ying Quek and Kian Ping Loh, A two-dimensional conjugated aromatic polymer via C–C coupling reaction, Nature Chemistry, 2017, doi:10.1038/nchem.2696

• Xin Lu,† Xin Luo,† Jun Zhang, Su Ying Quek and Qihua Xiong, Lattice vibrations and Raman scattering in two-dimensional layered materials beyond graphene. Nano Research, 2016, 9, 3559

• Xin Luo, Xin Lu, Chunxiao Cong, Ting Yu, Qihua Xiong, and Su Ying Quek, Stacking sequence determines Raman intensities of observed interlayer shear modes in 2D layered materials – a general bond polarizability model. Scientific Reports, 2015, 5, 14565.

• Xin Luo, Xin Lu, Gavin Kok Wai Koon, Antonio H Castro Neto, Barbaros Özyilmaz, Qihua Xiong, Su Ying Quek, Large Frequency Change with Thickness in Interlayer Breathing Mode - Significant Interlayer Interactions in Few Layer Black Phosphorus, Nano Letters, 2015, 15, 3931. (Highly cited SCI paper)

• Wei Sun Leong,† Yida Li,† Xin Luo,† Chang Tai Nai, Su Ying Quek, and John T. L. Thong, Tuning the Threshold Voltage of MoS2 Field-Effect Transistors via Surface Treatment. Nanoscale, 2015, 7, 10823.

• Wai Leong Chow,† Xin Luo,† Su Ying Quek, Beng Kang Tay, Electronic Structure: Evolution of Raman Scattering and Electronic Structure of Ultrathin Molybdenum Disulfide by Oxygen Chemisorption. Advanced Electronic Materials, 2015, 1, 1400037. (Inside Front Cover)

• Wei Sun Leong,† Xin Luo,† Yida Li,† Khoong Hong Khoo, Su Ying Quek, and John T. L. Thong, Low Resistance Metal Contacts to MoS2 Device with Nickel-Etched –Graphene Electrodes. ACS Nano, 2015, 9, 869.

• Yanyuan Zhao,† Xin Luo,† Hai Li, Jun Zhang, P. T. Araujo, C.K. Gan, J. Wu, Hua Zhang, Su Ying Quek, M. S. Dresselhaus, and Qihua Xiong, Interlayer Breathing and Shear Modes in Few-Trilayer MoS2 and WSe2, Nano Letters, 2013, 13, 1007−1015. (Highly cited SCI paper)

• Xin Luo, Yanyuan Zhao, Jun Zhang, Qihua Xiong, Su Ying Quek, Anomalous frequency trends in MoS2 thin films attributed to surface effects, Physical Review B, 2013, 88, 075320.

• Xin Luo, Biao Wang, Yue Zheng, Tunable tunnelling electro-resistance in ferroelectric tunnel junctions by mechanical loads, ACS Nano, 2011, 5, 1649.

† means equal contribution.

 

Strain engineering the performance of ferroelectric and piezoelectric device   

 

The mechanical loads are used to tuned the electro-resistance in tunnel junctions, providing a new freedom in material and device design.

ACS Nano, 2011, 5, 1649; Physical Chemistry Chemical Physics. 2012, 14, 7051

 

 

 

Phonon vibrations and Raman spectrum of two‐dimensional materials 

 

In a series of papers, we developed the theoretical framework on how to use the Raman spectrum to determine the thickness, symmetry, surface effect and absorption, as well as the stacking orders in 2D layer materials.

Nano Research, 2016, 9, 3559;

Scientific Reports, 2015, 5, 14565;

Nano Letters, 2015, 15, 3931

Advanced Electronic Materials, 2015, 1, 1400037;

Advanced Materials, 2015, 27, 4502

Nano Letters, 2013, 13, 1007;

Physical Review B, 2014, 90, 245428;

Physical Review B, 2013, 88, 195313

 

 

 

 

 

Interface between metal/semiconductors 

 

ACS Nano, 2015, 9, 869; Nanoscale, 2015, 7, 10823

 

Physical Review X, 2013, 3, 041027

The interface could be another freedom to tailor the properties of nanoelectronic devices. Here, we show that ultra-low contact resistance could be achieved in the MoS2/Graphene/Ni interface. And the nonvolatile resistive switching is obtained in Pt/LaAlO3/SrTiO3 heterostructures.

 

Organic two‐dimensional materials  

A new two-dimensional conjugated aromatic polymer is synthesized via C–C coupling reaction, which we believed paves the way for the sodium Battery application in organic 2D materials.

Nature Chemistry, 2017, doi:10.1038/nchem.2696