# Ya-Hong Xie

PROFESSOR
MATERIALS SCIENCE AND ENGINEERING

Email: yhx@seas.ucla.edu
Phone: (310) 825-2971
Fax: (310) 206-7353

Websites

- Introduction to the Xie Lab (Video)
- Semi-Conductor Materials Research Lab

##### RESEARCH AND INTERESTS

- Surface plasmon resonance enabled biosensing, notably surface enhanced Raman spectroscopy (SERS) of exosomes in liquid biopsy for disease diagnostics.
- Epitaxy of semiconductor nano-structures for achieving novel electronic and optoelectronic properties.

##### NOTABLE PUBLICATIONS

1. “Label-free SARS-CoV-2 Detection Platform Based on Surface-enhanced Raman Spectroscopy with Support Vector Machine Spectral Pattern Recognition”, Tieyi Li, Siddharth Srivastava, Jun Liu, Feng Li, Yong Kim, David T.W. Wong, Ya-Hong Xie; Engineered Science, v.23, 862 (2023);
2. “Analyzing Bronchoalveolar Fluid Derived Small Extracellular Vesicles using Single-Vesicle SERS for Non-Small Cell Lung Cancer Detection”, Sumita T. Jonak, Zirui Liu, Jun Liu, Tieyi Li, Brian V. D'Souza, J. Alan Schiaffino, Scott Oh and Ya-Hong Xie, Sens. Diagn., 2023, 2, 90;
3. “The Feasibility of Alzheimer's Disease Early Diagnosis Using a Neural Network Hybrid Platform”, Xinke Yu, Siddharth Srivastava, Shan Huang, Eric Y. Hayden, David B. Teplow and Ya-Hong Xie, Biosensors, v.12, 753 (2022);
4. “Gold Nanopyramid Arrays for Non-Invasive SERS-Based Gastric Cancer Detection via sEVs", Liu, Zirui; Li, Tieyi; Wang, Zeyu; Liu, Jun; Huang, Shan; Min, Byoung Hoon; An, Ji Young; Kim, Kyoung Mee; Kim, Sung; Chen, Yiqing; liu, huinan; Kim, Yong; Wong, David; Huang, Tony; Xie, Ya-Hong, ACS Appl. Nano Mat., September 2022; https://doi.org/10.1021/acsanm.2c01986; PMC9513748
5. “Ohmic contact to p-type GaN enabled by post-growth diffusion of magnesium”, Jia Wang, Shun Lu, Wentao Cai, Takeru Kumabe, Yuto Ando, Yaqiang Liao, Yoshio Honda, Ya-Hong Xie, and Hiroshi Amano, Electron Device Letters, v.43, 150 (2022);
6. “High-Gain Gated Lateral Power Bipolar Junction Transistor”, J. Wang, H. Amano, Y.H. Xie, IEEE Electron Device Letters, v.42(9), 1370-1373(2021);
7. “Non-polar true-lateral GaN power diodes on foreign substrates”, Jia Wang, Guo Yu, Hua Zong, Yaqiang Liao, Weifang Lu, Wentao Cai, Xiaodong Hu, Ya-Hong Xie, and Hiroshi Amano, Phys. Lett. 118, 212102 (2021); https://doi.org/10.1063/5.0051552.
8. “Molecular orientation and specificity in the identification of biomolecules via surface enhanced Raman spectroscopy”, XinkeYu, Wei Li, Owen Liang, YuBai, and Ya-Hong Xie, Analytical Biochemistry, 599, 113709 (2020); https://doi.org/10.1016/j.ab.2020.113709
9. “The proximity effect of the regrowth interface on two-dimensional electron density in strained Si”, J. Lie, T. M. Lu, J. Kim, K. Lai, D. C. Tsui, and Ya-Hong Xie Appl. Phys. Lett. 92, 112113 (2008);
10. “Capacitively induced high mobility two-dimensional electron gas in undoped Si/SiGe heterostructures with atomic-layer-deposited dielectric”, T.M. Lu, J. Liu, J. Kim, K. Lai, D.C. Tsui, and Y. H. Xie, Appl. Phys. Lett., 90, 182114 (2007).
11. "Step Energies and Surface Roughening Under Bulk Strain", Y.H.Xie, G.H.Gilmer, C.Roland, P.J.Silverman, S.K.Buratto, J.Y.Cheng, E.A.Fitzgerald, A.R.Kortan, S.Schuppler, M.A.Marcus, and P.H.Citrin, Phys. Rev. Lett., 74, 4963, (1995).
12. “Light Emission From Silicon”, S.S. Iyer, Y.-H. Xie, Science, 260, 40 (1993).
13. "Evaluation of Erbium Doped Silicon for Optoelectronic Applications", Y.-H. Xie, E.A. Fitzgerald, and Y.-J. Mii, J. Appl. Phys., 70, 3223 (1991).
14. "Extremely High Electron Mobility in Si/Gex Si1-x Structures Grown by Molecular Beam Epitaxy", Y.J. Mii, Y.-H. Xie, E. A. Fitzgerald, D. Monroe, F. A. Thiel, B. E. Weir, and L. C. Feldman, Appl. Phys. Lett., 59, 1611 (1991).