17 citations · 39 across the 13 of their papers we have counts for
13 papers
Tuning of quantum nanoscaled friction within the Prandtl-Tomlinson model
Dai-Nam Le, Lilia M. Woods
Nanoscaled friction is a fundamental tribological phenomenon with complex behavior of its dynamical force. Here, we utilize the Prandtl-Tomlinson framework to investigate systemati…
Anisotropic two-dimensional magnetoexciton with exact center-of-mass separation
Dang-Khoa D. Le, Hoang-Viet Le, Dai-Nam Le +4
Excitons in anisotropic two-dimensional (2D) materials, defined by direction-dependent effective masses, are of pronounced interest for their roles in excitonic and magneto-optical…
Casimir interactions between two parallel graphene sheets carrying steady-state drift currents
Modi Ke, Dai-Nam Le, Lilia M. Woods
We investigate the fluctuation-induced Casimir interactions between two parallel graphene sheets carrying steady-state drift currents. The graphene properties are modeled based on…
Prediction of a measurable sign change in the Casimir force using a magnetic fluid
Long Ma, Larissa Inácio, Dai-Nam Le +2
We demonstrate quantum levitation controlled by Casimir forces acting between a polystyrene surface and a Teflon-coated metallic substrate immersed in a mixture of Toluene and magn…
Phononic Casimir Effect in Planar Materials
Pablo Rodriguez-Lopez, Dai-Nam Le, Lilia M. Woods
The Phononic Casimir effect between planar objects is investigated by deriving a formalism from the quantum partition function of the system following multiscattering approach. Thi…
Radiative Heat Transfer and 2D Transition Metal Dichalcogenide Materials
Long Ma, Dai-Nam Le, Lilia M. Woods
Radiative heat transfer is of great interest from a fundamental point of view and for energy harvesting applications. This is a material dependent phenomenon where confined plasmon…
Interface Magnetism in Vanadium-doped MoS/Graphene Heterostructures
Diem Thi-Xuan Dang, Yen Thi-Hai Pham, Da Zhou +4
Magnetism in two-dimensional materials is of great importance in discovering new physical phenomena and developing new devices at the nanoscale. In this paper, first-principles sim…
Twisting in h-BN bilayers and their angle-dependent properties
Diem Thi-Xuan Dang, Dai-Nam Le, Lilia M. Woods
In this paper, we systematically investigate the structural and electronic properties of twisted h-BN bilayers to understand the role of the twisting angle. Using first-principles…
Quantum stick-slip motion in nanoscaled friction
Dai-Nam Le, Pablo Rodriguez-Lopez, Lilia M. Woods
Friction in atomistic systems is usually described by the classical Prandtl-Tomlinson model suitable for capturing the dragging force of a nanoparticle in a periodic potential. Her…
Phonon-assisted Casimir interactions between piezoelectric materials
Dai-Nam Le, Pablo Rodriguez-Lopez, Lilia M. Woods
The strong coupling between electromagnetic field and lattice oscillation in piezoelectric materials gives rise to phonon polariton excitations. Such quasiparticles open up new dir…
Dissecting van der Waals interactions with Density Functional Theory -- Wannier-basis approach
Diem Thi-Xuan Dang, Dai-Nam Le, Lilia M. Woods
A new scheme for the computation of dispersive interactions from first principles is presented. This cost-effective approach relies on a Wannier function representation compatible…
Vanadium-Doped Molybdenum Disulfide Monolayers with Tunable Electronic and Magnetic Properties: Do Vanadium-Vacancy Pairs Matter?
Da Zhou, Yen Thi Hai Pham, Diem Thi-Xuan Dang +12
Monolayers of molybdenum disulfide (MoS2) are the most studied two-dimensional (2D) transition-metal dichalcogenides (TMDs), due to its exceptional optical, electronic, and opto-el…
Giant anisotropy and Casimir phenomena: the case of carbon nanotube metasurfaces
Pablo Rodriguez-Lopez, Dai-Nam Le, Igor V. Bondarev +2
The Casimir interaction and torque are related phenomena originating from the exchange of electromagnetic excitations between objects. While the Casimir force exists between any ty…