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Meet Thi Nga

Visiting Assistant Professor, Physics

Education

2011 Hue University, B.S.
2013 National Cheng Kung University, M.S.
2017 National Cheng Kung University, Ph.D.

Courses Taught

General Physics I
General Physics I Lab

Career Specialties

Thi Nga Do's academic focus lies in condensed matter physics, with a specialization in computational methods tailored to advance our understanding of complex physical phenomena at the microscopic scale.

Professional and Community Activities

In the realm of Condensed Matter Physics, Thi's scholarly journey has been a pursuit of understanding the fundamental properties of emergent materials and phenomena. In the past years, the research has been dedicated to unraveling the intricacies of condensed matter systems through computational methodologies, primarily employing Fortran and Matlab algorithms. The focus of this work lies in the exploration of electronic, transport, optical and collective properties of various materials under external fields. 

A significant breakthrough of her research lies in the development of a comprehensive computational program that integrates computational modeling with essential physical theories. This program, which incorporates the Peierls substitution to Wannier90 method, facilitates the construction of Hamiltonians under external magnetic fields, marking a notable advancement in computational physics. By leveraging this program, Thi has delved into an array of materials, ranging from graphene-based structures to topological materials, unearthing novel material properties and phenomena. Her investigations have led to the discovery of unconventional phenomena, such as the quantized optical Hall current in topological nodal-line semiconductors and unique plasmonic behaviors in edge-defect graphene nanoribbons. These findings not only contribute to the fundamental understanding of condensed matter physics but also hold promise for the development of electronic and optical devices with enhanced functionalities. 

Building upon the success of my previous endeavors, Thi is currently spearheading a project on the thermoelectric response of flat band materials under external fields. This study aims to explore the thermoelectric properties of systems like magic-angle twisted bilayer graphene, with a focus on increasing the thermoelectric figure of merit. By investigating the transverse Hall conductivity, longitudinal conductivity and Seebeck coefficient, this research endeavors to pave the way for materials with improved heat-to-work conversion efficiency.

Recent publications:

Po-Hsin Shih, Thi-Nga Do (Corresponding author) and Godfrey Gumbs Strain Engineering of Magneto-optical Properties in C3B/C3N van der Waals Heterostructure, Carbon 218, 118739 (2024).

Thi-Nga Do, Po-Hsin Shih and Godfrey Gumbs Optical Absorption of TaS2 and TaSe2 Transition-Metal Dichalcogenides, Solid State Phenomena 356, 113-117 (2024).

Thi-Nga Do, Po-Hsin Shih and Godfrey Gumbs, Magnetoplasmon in magic-angle twisted bilayer graphene, Journal of Physics: Condensed Matter 35, 455703 (2023).

Po-Hsin Shih, Danhong Huang, Godfrey Gumbs and Thi-Nga Do, Effects of interfaceroughness scattering on nonlinear electron transport in superlattice based on exact solution of generalized Boltzmann transport equation, Physical Review B 108, 165304 (2023).

Thi-Nga Do, Po-Hsin Shih, Hsin Lin, Danhong Huang, Godfrey Gumbs and TayRong Chang Generalized Peierls substitution for the tight-binding model of twisted multilayer graphene in a magnetic field, Physical Review B 105, 235418 (2022).

Thi-Nga Do, Godfrey Gumbs, Danhong Huang, Bui Dinh Hoi and Po-Hsin Shih, Role of edge-defect in the optical properties of armchair graphene nanoribbons, Nanomaterials 11(12), 3229 (2021).

Thi-Nga Do, Po-Hsin Shih, Godfrey Gumbs and Danhong Huang, Engineering plasmon modes and their loss in armchair graphene nanoribbons by selected edgeextended defects, Journal of Physics: Condensed Matter, 33, 485001 (2021).

Thi-Nga Do, Danhong Huang, Po-Hsin Shih, Hsin Lin and Godfrey Gumbs, Atomistic band-structure computation for investigating Coulomb dephasing and impurity scattering rates of electrons in graphene, Nanomaterials, 11(5), 1194 (2021).

Thi-Nga Do, Po-Hsin Shih, Godfrey Gumbs, Danhong Huang, Influence of electric and magnetic fields and σ-edge bands on the electronic and optical spectra of graphene nanoribbons, Phys. Rev. B 103, 115408 (2021).

Nguyen N. Hieu, Po-Hsin Shih, Thi-Nga Do (Corresponding author), Chuong V. Nguyen, Multi-orbital tight binding model for the electronic and optical properties of armchair graphene nanoribbons in the presence of a periodic potential, J. Phys.: Condens. Matter 33, 155702 (2021).

Honors and Awards

Research Award "AAPPS Award" by the Physical Society of Taiwan and Association of Asia Pacic Physical Societies (2021).
Research and Travel Awards by Ministry of Science and Technology of Taiwan (2015, 2018, 2019) and by National Cheng Kung University, Taiwan (2015).
Research Award "Annual Thesis Contest of Tung-Sheng Chang Foundation of Culture and Education 2015", Taiwan (2015).
Research Award "Vietnamese Young Science Talent Award" by the Vietnamese Ministry of Education and Training, Vietnam (2011).