Hai-Ping Cheng
Professor | University of Florida
Gainesville, FL, UNITED STATES
Hai-Ping Cheng’s research interests include physical phenomena at ultra-small (nano) scale via large-scale computational approach.
Biography
Hai-Ping Cheng’s research interests include physical phenomena at ultra-small (nano) scale via large-scale computational approach with the goal of developing a basic understanding of physical properties of finite-size systems (cluster, nano-crystals, molecular/nano-wires) and their interaction with bulk matter.
Areas of Expertise (2)
Physics
LIGO
Media Appearances (1)
Gravitational waves detected 100 years after Einstein’s prediction
UF News online
2016-02-11
The Florida group has grown over the years. Stephen Eikenberry joined in 2011 and is leading a group working on using astronomical telescopes—including the University of Florida's Gran Telescopio Canarias—to identify and study light from the astrophysical sources generating the LIGO signals. Hai-Ping Cheng joined in 2012 and studies the reasons for the observed excess noise in the optical coatings of the LIGO mirrors.
Articles (5)
Multiple control of few-layer Janus MoSSe systems
Physical Review MaterialsShuanglong Liu, et al.
2021-06-24
In this computational work based on density functional theory, we study the electronic and electron transport properties of asymmetric multilayer MoSSe junctions, known as Janus junctions. Focusing on four-layer systems, we investigate the influence of electric field, electrostatic doping, strain, and interlayer stacking on the electronic structure. We discover that a metal-to-semiconductor transition can be induced by an out-of-plane electric field.
Modeling carrier mobility in graphene as a sensitive probe of molecular magnets
Physical Review BAndrew Brooks, et al.
2021-06-17
Carrier mobility in graphene on a GaAs substrate and its change due to the adsorption of molecular magnets, Mn12 and [Mn3]2, on the surface of graphene, is calculated from first principles. Phonon limited mobility is also calculated for comparison.
Tests of general relativity with binary black holes from the second LIGO-Virgo gravitational-wave transient catalog
Physical Review DR. Abbott, et al.
2021-06-15
Gravitational waves enable tests of general relativity in the highly dynamical and strong-field regime. Using events detected by LIGO-Virgo up to 1 October 2019, we evaluate the consistency of the data with predictions from the theory. We first establish that residuals from the best-fit waveform are consistent with detector noise, and that the low- and high-frequency parts of the signals are in agreement.
Tailoring electrocatalytic activity of in situ crafted perovskite oxide nanocrystals via size and dopant control
PNASYeu-Wei Harn, et al.
2021-06-14
The ability to scrutinize the correlation of dimension, composition, and dopant to electrocatalytic performance renders the development of highly active electrocatalysts. This work reports a general and robust strategy for crafting uniform perovskite oxide nanoparticles (i.e., BaTiO3 and La- and Co-doped BaTiO3) with controlled sizes and dopant compositions by employing amphiphilic star-like diblock copolymers as nanoreactors.
GWTC-2: Compact Binary Coalescences Observed by LIGO and Virgo during the First Half of the Third Observing Run
Physical Review XR. Abbott, et al.
2021-06-09
We report on gravitational-wave discoveries from compact binary coalescences detected by Advanced LIGO and Advanced Virgo in the first half of the third observing run (O3a) between 1 April 2019 15∶00 UTC and 1 October 2019 15∶00 UTC. By imposing a false-alarm-rate threshold of two per year in each of the four search pipelines that constitute our search, we present 39 candidate gravitational-wave events. At this threshold, we expect a contamination fraction of less than 10%.
