787 citations · 5.8k across the 76 of their papers we have counts for
15 papers · 1 filter
Double Dirac Cones and Topologically Non-Trivial Phonons for Continuous, Square Symmetric (C and C) Unit Cells
Yan Lu, Harold S. Park
Because phononic topological insulators have primarily been studied in discrete, graphene-like structures with C or C hexagonal symmetry, an open question is how to sys…
Spin-Orbit Dirac Fermions in 2D Systems
Aleksandr S. Rodin, Paul Z. Hanakata, Alexandra Carvalho +3
We propose a novel model for including spin-orbit interactions in buckled two dimensional systems. Our results show that in such systems, intrinsic spin-orbit coupling leads to a f…
A Review on Mechanics and Mechanical Properties of 2D Materials - Graphene and Beyond
Deji Akinwande, Christopher J. Brennan, J. Scott Bunch +17
Since the first successful synthesis of graphene just over a decade ago, a variety of two-dimensional (2D) materials (e.g., transition metal-dichalcogenides, hexagonal boron-nitrid…
Graphene kirigami as a platform for stretchable and tunable quantum dot arrays
D. A. Bahamon, Zenan Qi, Harold. S. Park +2
The quantum transport properties of a graphene kirigami similar to those studied in recent experiments are calculated in the regime of elastic, reversible deformations. Our results…
The Effects of Free Edge Interaction-Induced Knotting on the Buckling of Monolayer Graphene
Hao-Yu Zhang, Jin-Wu Jiang, Tienchong Chang +2
Edge effects play an important role for many properties of graphene. While most works have focused on the effects from isolated free edges, we present a novel knotting phenomenon i…
Conductance signatures of electron confinement induced by strained nanobubbles in graphene
D. A. Bahamon, Zenan Qi, Harold S. Park +2
We investigate the impact of strained nanobubbles on the conductance characteristics of graphene nanoribbons using a combined molecular dynamics - tight-binding simulation scheme.…
Coupling Tension and Shear for Highly Sensitive Graphene-Based Strain Sensors
Zenan Qi, Jian Zhang, Guiping Zhang +1
We report, based on its variation in electronic transport to coupled tension and shear deformation, a highly sensitive graphene-based strain sensor consisting of an armchair graphe…
Pseudomagnetic fields in graphene nanobubbles of constrained geometry: A molecular dynamics study
Zenan Qi, Alexander L. Kitt, Harold S. Park +3
Analysis of the strain-induced pseudomagnetic fields (PMFs) generated in graphene nanobulges under three different substrate scenarios shows that, in addition to the shape, the gra…
MoS2 Nanoresonators: Intrinsically Better Than Graphene?
Jin-Wu Jiang, Harold S. Park, Timon Rabczuk
We perform classical molecular dynamics simulations to examine the intrinsic energy dissipation in single-layer MoS nanoresonators, where a point of emphasis is to compare it…
FPU physics with nanomechanical graphene resonators: intrinsic relaxation and thermalization from flexural mode coupling
Daniel Midtvedt, Zenan Qi, Alexander Croy +2
Thermalization in nonlinear systems is a central concept in statistical mechanics and has been extensively studied theoretically since the seminal work of Fermi, Pasta and Ulam (FP…
Resonant tunneling in graphene pseudomagnetic quantum dots
Zenan Qi, D. A. Bahamon, Vitor M. Pereira +3
Realistic relaxed configurations of triaxially strained graphene quantum dots are obtained from unbiased atomistic mechanical simulations. The local electronic structure and quantu…
Beat Phenomena in Metal Nanowires, and their Implications for Resonance-Based Elastic Property Measurements
Haifei Zhan, Yuantong Gu, Harold S. Park
The elastic properties of 1D nanostructures such as nanowires are often measured experimentally through actuation of the nanowire at its resonance frequency, and then relating the…
Enhancing the Mass Sensitivity of Graphene Nanoresonators Via Nonlinear Oscillations: The Effective Strain Mechanism
Jin-Wu Jiang, Harold S. Park, Timon Rabczuk
We perform classical molecular dynamics simulations to investigate the enhancement of the mass sensitivity and resonant frequency of graphene nanomechanical resonators that is achi…
Intrinsic Energy Dissipation in CVD-Grown Graphene Nanoresonators
Zenan Qi, Harold S. Park
We utilize classical molecular dynamics to study the the quality (Q)-factors of monolayer CVD-grown graphene nanoresonators. In particular, we focus on the effects of intrinsic gra…
Nanomechanical Resonators and Their Applications in Biological/Chemical Detection: Nanomechanics Principles
Kilho Eom, Harold S. Park, Dae Sung Yoon +1
Recent advances in nanotechnology have led to the development of nano-electro-mechanical systems (NEMS) such as nanomechanical resonators, which have recently received significant…