Dr. Dai-Nam Le
Department of Physics, University of South Florida, Tampa, Florida, USA
https://sites.google.com/view/dai-nam-le/
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Academic Career Length
12Years (2015-Present)
(Calculated once Scilit publication data is synced: current year − year of first publication + 1)
Representative Publications
View All Publications1 March 2020 in Journal of Luminescence
Journal Article
HDHo Kim Dan
Ho Kim Dan
Dai-Nam LeHNHieu T. Nguyen-Truong
Hieu T. Nguyen-Truong
TTTran Duy Tap
Tran Duy TapHVHa Xuan Vinh
Ha Xuan Vinh
JQJianbei Qiu
Jianbei Qiu
+3
17 January 2024 in Physical Review B
Journal Article
PRPablo Rodriguez-Lopez
Pablo Rodriguez-LopezDai-Nam LeIBIgor V. Bondarev
Igor V. BondarevMAMauro Antezza
Mauro Antezza
Lilia WoodsThe Casimir interaction and torque are related phenomena originating from the exchange of electromagnetic excitations between objects. While the Casimir force exists between all types of objects, the material or geometrical anisotropy drives the emergence of the Casimir torque. Here both phenomena are studied theoretically between dielectric films with immersed parallel single-wall carbon nanotubes in the dilute limit with their chirality and collective electronic and optical response properties taken into account. It is found that the Casimir interaction is dominated by thermal fluctuations at submicron separations, while the torque is primarily determined by quantum mechanical effects. This peculiar quantum vs thermal separation is attributed to the strong influence of the reduced dimensionality and inherent anisotropy of the materials. Our study suggests that nanostructured anisotropic materials can serve as novel platforms to uncover new functionalities in ubiquitous Casimir phenomena.
27 October 2022 in 2D Materials
Journal Article
PRPablo Rodriguez-Lopez
Pablo Rodriguez-LopezDai-Nam LeMCMaría J Calderón
María J CalderónEBElena Bascones
Elena BasconesLilia WoodsTwisted bilayered graphenes (TBGs) at magic angles are systems housing long ranged periodicity of moiré patterns together with short ranged periodicity associated with the individual graphenes. Such materials are a fertile ground for novel states largely driven by electronic correlations. Here we find that the ubiquitous Casimir force can serve as a platform for macroscopic manifestations of the quantum effects stemming from the magic angle bilayered graphenes properties and their phases determined by electronic correlations. By utilizing comprehensive calculations for the electronic and optical response, we find that Casimir torque can probe anisotropy from the Drude conductivities in nematic states, while repulsion in the Casimir force can help identify topologically nontrivial phases in magic angle TBGs.
1 April 2017 in Journal of Mathematical Physics
Journal Article
A hydrogen atom in a constant magnetic field is a problem whose Schrödinger equation has been considered to be analytically unsolvable. However, it has been found for the case of two-dimensional space some specific values of the magnetic field for which the problem has analytical solutions. In this paper, we give a full theory for these analytical solutions. First, we construct an equation to calculate of exact-solution-points, the values of magnetic field which allow exact solutions for the Schrödinger equation. The explicit forms of the wave functions corresponding to these analytical solutions are also given. Second, we analyse the exact-solution-points and discover some important rules. (i) There exist (n − 1)2 different values of the magnetic field so that the Schrödinger equation of a two-dimensional hydrogen atom in such field has exact analytical solutions with the principal quantum number n. (ii) For more details, among these (n − 1)2 exact analytical solutions, there are solutions with the same magnetic quantum number m. Both properties are also proved mathematically in this paper. For illustration, some concrete values are shown for the cases of quantum number n up to 8.
24 August 2020 in The European Physical Journal B
Journal Article
1 February 2018 in Physica E: Low-dimensional Systems and Nanostructures
Journal Article
About Me
Dai-Nam Le obtained his Physics Teacher Education bachelor from Ho Chi Minh City University of Education, Vietnam in 2015 and then followed by earning his Ph.D. degree in Theoretical and Mathematical Physics from Vietnam National University Ho Chi Minh City, Vietnam in 2023. When pursuing his Ph.D., he worked at Ton Duc Thang University, Vietnam as a researcher for 6 years. He has published more than 35 publications in several prestigious journals such as Phys. Rev. B, Phys. Rev. Research, J. Phys. Chem. C, Comm. Mater., J. Math. Phys., J. Phys. Condens. Mater., JCAP, etc. Besides, he also has served as a peer reviewer for several physics journals such as Phys. Rev. Lett., Phys. Rev. B, J. Phys. A, J. Appl. Phys., ACS Photonics, etc. as well as funding review for Vietnam NAFOSTED. He is also member of the American Physical Society, American Mathematical Society - Mathematical Reviews, and Vietnamese Theoretical Physics Society. He worked on mathematical physics problems related to supersymmetry quantum mechanics on Dirac materials, the 9D MICZ-Kepler problem, and 2D quasiparticle like exciton. He joined Dr. Lilia M. Woods’ research group in the Department of Physics, University of South Florida, Tampa, Florida as an academic visitor in 2021 and later became a postdoctoral researcher in 2023. His current research interest is dissipative phenomena in novel materials such as Casimir or van der Waals interaction, near-field radiative heat transfer, and quantum friction.
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