183 citations · 423 across the 22 of their papers we have counts for
22 papers
Ionic Peltier Effect in Li-Ion Electrolytes
Zhe Cheng, Yu-Ju Huang, Beniamin Zahiri +3
The coupled transport of charge and heat provide fundamental insights into the microscopic thermodynamics and kinetics of materials. We describe a sensitive ac differential resista…
Direct Observation of Reversible Heat Absorption in Li-ion Battery Enabled by Ultra-Sensitive Thermometry
Zhe Cheng, Xiaoyang Ji, David G. Cahill
The reversible heat in lithium-ion batteries (LIBs) due to entropy change is fundamentally important for understanding the chemical reactions in LIBs and developing proper thermal…
Good Solid-State Electrolytes Have Low, Glass-like Thermal Conductivity
Zhe Cheng, Beniamin Zahiri, Xiaoyang Ji +4
Management of heat during charging and discharging of Li-ion batteries is critical for their safety, reliability, and performance. Understanding the thermal conductivity of the mat…
Thermal Visualization of Buried Interfaces by Transient and Steady-State Responses of Time-Domain Thermoreflectance
Zhe Cheng, Fengwen Mu, Xiaoyang Ji +6
Thermal resistances from interfaces impede heat dissipation in micro/nanoscale electronics, especially for high-power electronics. Despite the growing importance of understanding i…
Thermal Conductivity Mapping of Oxidized SiC SiC Composites by Time Domain Thermoreflectance with Heterodyne Detection
Xiaoyang Ji, Zhe Cheng, Ella Kartika Pek +1
Silicon carbide silicon carbide (SiC SiC) composites are often used in oxidizing environments at high temperatures. Measurements of the thermal conductance of the oxide layer provi…
Understanding Phonon Transport Properties Using Classical Molecular Dynamics Simulations
Murali Gopal Muraleedharan, Kiarash Gordiz, Andrew Rohskopf +4
Predictive modeling of the phonon/thermal transport properties of materials is vital to rational design for a diverse spectrum of engineering applications. Classical Molecular Dyna…
Simultaneous Evaluation of Heat Capacity and In-plane Thermal Conductivity of Nanocrystalline Diamond Thin Films
Luke Yates, Zhe Cheng, Tingyu Bai +6
As wide bandgap electronic devices have continued to advance in both size reduction and power handling capabilities, heat dissipation has become a significant concern. To mitigate…
Experimental Observation of High Intrinsic Thermal Conductivity of AlN
Zhe Cheng, Yee Rui Koh, Abdullah Mamun +17
AlN is an ultra-wide bandgap semiconductor which has been developed for applications including power electronics and optoelectronics. Thermal management of these applications is th…
Interfacial Thermal Conductance across Room-Temperature Bonded GaN-Diamond Interfaces for GaN-on-Diamond Devices
Zhe Cheng, Fengwen Mu, Luke Yates +2
The wide bandgap, high-breakdown electric field, and high carrier mobility makes GaN an ideal material for high-power and high-frequency electronics applications such as wireless c…
Thermal Conductance Across Harmonic-matched Epitaxial Al-sapphire Heterointerfaces
Zhe Cheng, Yee Rui Koh, Habib Ahmad +17
A unified understanding of interfacial thermal transport is missing due to the complicated nature of interfaces which involves complex factors such as interfacial bonding, interfac…
High Thermal Boundary Conductance across Bonded Heterogeneous GaN-SiC Interfaces
Fengwen Mu, Zhe Cheng, Jingjing Shi +5
GaN-based HEMTs have the potential to be widely used in high-power and high-frequency electronics while their maximum output powers are limited by high channel temperature induced…
Significantly Reduced Thermal Conductivity in Beta-(Al0.1Ga0.9)2O3/Ga2O3 Superlattices
Zhe Cheng, Nicholas Tanen, Celesta Chang +6
Beta-Ga2O3 has emerged as a promising candidate for electronic device applications because of its ultra-wide bandgap, high breakdown electric field, and large-area affordable subst…
Thermal Conductance across beta-Ga2O3-diamond Van der Waals Heterogeneous Interfaces
Zhe Cheng, Luke Yates, Jingjing Shi +3
Because of its ultrawide bandgap, high breakdown electric field, and large area affordable substrates grown from the melt, beta Ga2O3 has attracted great attention recently for pot…
Diffuson-driven Ultralow Thermal Conductivity in Amorphous Nb2O5 Thin Films
Zhe Cheng, Alex Weidenbach, Tianli Feng +9
Niobium pentoxide (Nb2O5) has been extensively reported for applications of electrochemical energy storage, memristors, solar cells, light emitting diodes (LEDs), and electrochromi…
Tunable Thermal Energy Transport across Diamond Membranes and Diamond-Si Interfaces by Nanoscale Graphoepitaxy
Zhe Cheng, Tingyu Bai, Jingjing Shi +14
The development of electronic devices, especially those that involve heterogeneous integration of materials, has led to increased challenges in addressing their thermal operational…
Thermal Rectification in CVD Diamond Membranes Driven by Gradient Grain Structure
Zhe Cheng, Brian M. Foley, Thomas Bougher +3
As one of the basic components of phononics, thermal diodes transmit heat current asymmetrically similar to electronic rectifiers and diodes in microelectronics. Heat can be conduc…
Probing Growth-Induced Anisotropic Thermal Transport in CVD Diamond Membranes by Multi-frequency and Multi-spot-size Time-Domain Thermoreflectance
Zhe Cheng, Thomas Bougher, Tingyu Bai +7
The maximum output power of GaN-based high-electron mobility transistors is limited by high channel temperature induced by localized self-heating which degrades device performance…
Strongly Anisotropic Thermal and Electrical Conductivities of Self-assembled Silver Nanowire Network
Zhe Cheng, Meng Han, Pengyu Yuan +3
Heat dissipation issues are the emerging challenges in the field of flexible electronics. Thermal management of flexible electronics creates a demand for flexible materials with hi…
Temperature dependence of electrical and thermal conduction in single silver nanowire
Zhe Cheng, Longju Liu, Meng Lu +1
Silver nanowires have great application potential in fields like flexible electronic devices, solar cells and transparent electrodes. It is critical and fundamental to study the th…
Phonon Softening and Weak Temperature-dependent Lorenz Number for Bio-supported Ultra-thin Ir Film
Zhe Cheng, Zaoli Xu, Shen Xu +2
This work reports on the first-time study of the temperature-dependent behavior of the Lorenz number of bio-supported average 3.2 nm-thin Ir film down to 10 K. Due to the strong im…
Temperature Dependent Behavior of Thermal Conductivity of Sub-5 nm Ir film: Defect-electron Scattering Quantified by Residual Thermal Resistivity
Zhe Cheng, Zaoli Xu, Shen Xu +1
By studying the temperature-dependent behavior of electron thermal conductivity (k) in a 3.2 nm-thin film, we quantify the extremely confined defect-electron scattering and reveal…
Thermophysical Properties of Lignocellulose: A Cell-scale Study down to 41K
Zhe Cheng, Zaoli Xu, Lei Zhang +1
Thermal energy transport is of great importance in lignocellulose pyrolysis for bio-fuels. The thermophysical properties of lignocellulose significantly affect the overall properti…