Article
Chemistry, Multidisciplinary
Lin Jing, Rui Cheng, Muzzafer Tasoglu, Zexiao Wang, Qixian Wang, Hannah Zhai, Sheng Shen
Summary: This article introduces a novel sandwich-structured thermal interface material with a record-low thermal resistance and high flexibility. It combines vertically aligned copper nanowires and a graphene coating to achieve efficient thermal management in modern electronics.
Article
Nanoscience & Nanotechnology
Samreen Khan, Frank Angeles, John Wright, Saurabh Vishwakarma, Victor H. Ortiz, Erick Guzman, Fariborz Kargar, Alexander A. Balandin, David J. Smith, Debdeep Jena, H. Grace Xing, Richard Wilson
Summary: The study aims to investigate the impact of bulk vibrational properties and interfacial structure on thermal transport at interfaces in wide band gap semiconductor systems. The results suggest that thermal conductance depends on the bulk phonon properties of the softer material and the interfacial structure, rather than just the vibrational similarity between the two materials.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Materials Science, Multidisciplinary
Jing Zhou, Haibo Zhao, Xuanhui Fan, Kunpeng Yuan, Zhitong Wang, Zhongyin Zhang, Donghao Li, Xiaoliang Zhang, Haisheng Chen, Dawei Tang, Xinghua Zheng, Jie Zhu
Summary: This research aims to enhance the interface thermal conductance (ITC) of metal-MoS2-dielectric structures by employing various strategies, including modifying metal electrodes, adjusting the number of MoS2 layers, and incorporating van der Waals heterostructures. The experimental results show that the effect of regulating metal electrodes depends on the binding energy between the metal-MoS2 interfaces, and increasing the number of MoS2 layers may not necessarily enhance the ITC. The comparison between hBN-MoS2 and Gr-MoS2 heterostructures indicates the potential of Gr-MoS2 in augmenting ITC. In addition, nonequilibrium molecular dynamics simulation is effectively used to gain deeper insights into the effect of binding energy on optimizing the ITC. The significance of these strategies in enhancing thermal properties is discussed through an analysis of interfacial binding energy.
MATERIALS TODAY PHYSICS
(2023)
Article
Materials Science, Multidisciplinary
Xiaoyan Liu, Fangyuan Sun, Wei Wang, Jie Zhao, Luhua Wang, Zhanxun Che, Guangzhu Bai, Xitao Wang, Jinguo Wang, Moon J. Kim, Hailong Zhang
Summary: The thermal conductivity of a diamond particle reinforced copper matrix composite is significantly influenced by the non-wetting heterointerface. This study investigates the effect of a chromium (Cr) interlayer on the interface thermal conductance between copper and diamond. The results show that the addition of a Cr interlayer enhances the interfacial adhesion and improves the thermal conductance between copper and diamond.
INTERNATIONAL JOURNAL OF MINERALS METALLURGY AND MATERIALS
(2022)
Article
Nanoscience & Nanotechnology
Ziyang Wang, Fangyuan Sun, Zihan Liu, Libing Zheng, Dazheng Wang, Yanhui Feng
Summary: In this study, the effect of interfacial roughness on the thermal boundary conductance (TBC) between copper and diamond is investigated using molecular dynamics simulations and time-domain thermoreflectance experiments. It is found that a rough interface improves thermal transport efficiency and increases TBC by 5.5 times compared to a flat interface. The phonon scattering probability increases with roughness and stabilizes gradually. Experimental measurements using time-domain thermoreflectance confirm the results of the simulations. This study provides a theoretical and experimental basis for roughness modification in interfacial thermal management and suggests a new approach for enhancing the thermal conductivity of composites.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Nanoscience & Nanotechnology
Heungdong Kwon, Christopher Perez, Woosung Park, Mehdi Asheghi, Kenneth E. Goodson
Summary: The study introduced metal nanograting structures as opto-thermal transducers in TDTR to measure the TBC of metal-oxide interfaces, demonstrating improved measurement sensitivity.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Nanoscience & Nanotechnology
Jingjing Shi, Chao Yuan, Hsien-Lien Huang, Jared Johnson, Chris Chae, Shangkun Wang, Riley Hanus, Samuel Kim, Zhe Cheng, Jinwoo Hwang, Samuel Graham
Summary: This study investigates thermal transport at beta-Ga2O3/metal interfaces using theoretical modeling and experimental measurements. It highlights the significant impact of metal cutoff frequency on thermal boundary conductance, followed by chemical reactions and defects. Different metals show varying effects on the thermal boundary conductance in these interfaces.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Chemistry, Multidisciplinary
Yang Wang, David W. Collinson, Heungdong Kwon, Robert D. Miller, Krystelle Lionti, Kenneth E. Goodson, Reinhold H. Dauskardt
Summary: Thermal transport in polymer nanocomposites is influenced by the interfacial thermal conductance, which is determined by the density of internal interfaces. However, there is a lack of experimental measurements linking thermal conductance to the chemistry and bonding between polymer molecules and the glass surface. To address this issue, polymers are confined in porous organosilicates with high interfacial densities. The thermal conductivities of the composites are measured using time-domain thermoreflectance, and the thermal boundary conductance is extracted using effective medium theory and finite element analysis. This analysis platform provides a new paradigm for studying heat flow across different domains.
Article
Chemistry, Multidisciplinary
Aditya Sood, Charles Sievers, Yong Cheol Shin, Victoria Chen, Shunda Chen, Kirby K. H. Smithe, Sukti Chatterjee, Davide Donadio, Kenneth E. Goodson, Eric Pop
Summary: Layering two-dimensional van der Waals materials provides control over atomic placement, influencing vibrational spectra and heat flow. Experimental and simulation studies reveal the design rules for cross-plane heat transport in superlattices assembled from graphene and MoS2 monolayers, demonstrating the importance of vibrational mismatch, interlayer adhesion, and junction asymmetry. An ultra-low effective cross-plane thermal conductivity superlattice is successfully achieved through these design rules.
Article
Materials Science, Multidisciplinary
Jiahui Pan, Xing Fan, Kedong Zhang, Zhiming Geng, Jinshan Yao, Yu Deng, Jian Zhou, Xue-Jun Yan, Ming-Hui Lu, Hong Lu, Yan-Feng Chen
Summary: Interface, an important concept in thermal transport research, has been studied by modifying the morphology and thermal resistance of an Al/GaAs interface with ErAs. Observed transitions of phonon behaviors were achieved by altering the thickness of ErAs.
MATERIALS TODAY PHYSICS
(2022)
Article
Chemistry, Physical
Yuting Guo, Donatas Surblys, Hiroki Matsubara, Taku Ohara
Summary: In this study, the effects of the number and position of functional groups, as well as the length of main and side chains in organic surfactants on adsorption behavior and interfacial heat transfer were investigated through molecular dynamics simulation. It was found that these factors influenced the heat transfer efficiency at the solid-liquid interface. The results provide insights for designing more effective surfactants to enhance interfacial heat transfer.
JOURNAL OF MOLECULAR LIQUIDS
(2021)
Article
Nanoscience & Nanotechnology
Yongjian Zhang, Ziyang Wang, Ning Li, Zhanxun Che, Xiaoyan Liu, Guo Chang, Jinpeng Hao, Jingjie Dai, Xitao Wang, Fangyuan Sun, Hailong Zhang
Summary: Manipulating the interfacial structure is crucial for enhancing the interfacial thermal conductance in Cu/diamond composites. This study investigates the interfacial thermal conductance between Cu and diamond with an interconnected interlayer and explores the relationship between interfacial structure and conductance. Experimental measurements and molecular dynamics simulations are conducted to analyze the effects of different interlayers on thermal conductance.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Thermodynamics
Haiyang Li, Jun Wang, Guodong Xia
Summary: This paper studies the mechanism of heat transfer through solid-liquid interfaces. It is found that the interfacial heat transfer can be enhanced by increasing interfacial coupling strength or introducing nanostructured surfaces. The underlying mechanism of the interfacial thermal transport is analyzed based on various calculation results.
JOURNAL OF THERMAL SCIENCE
(2022)
Article
Chemistry, Physical
Susu Yang, Houfu Song, Yan Peng, Lu Zhao, Yuzhen Tong, Feiyu Kang, Mingsheng Xu, Bo Sun, Xinqiang Wang
Summary: Experimental measurement of thermal boundary conductance (TBC) between GaN and substrates with AuSn adhesive layer revealed lower TBC due to mismatch in phonon modes between AuSn/Ti and substrates.
Article
Nanoscience & Nanotechnology
Shizhou Jiang, Dmitry Lebedev, Loren Andrews, J. Tyler Gish, Thomas W. Song, Mark C. Hersam, Oluwaseyi Balogun
Summary: Two-dimensional (2D) semiconductors with ambient encapsulation exhibit unique physical properties desirable for various applications. However, limited studies have been conducted on the in-plane thermal conductivity measurements in encapsulated 2D semiconductors. To address this challenge, the authors integrated the FDTR and OTRS techniques in the same experimental platform.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Chemistry, Physical
Hyunkyu Kim, Subramani Surendran, Yujin Chae, Ha Yeun Lee, Tae-Yong An, Hyun Soo Han, Woosung Park, Jung Kyu Kim, Uk Sim
APPLIED SURFACE SCIENCE
(2020)
Review
Chemistry, Multidisciplinary
Gnanaprakasam Janani, Yujin Chae, Subramani Surendran, Yelyn Sim, Woosung Park, Jung Kyu Kim, Uk Sim
APPLIED SCIENCES-BASEL
(2020)
Article
Chemistry, Multidisciplinary
Joonsuk Park, Kiho Bae, Taeho Roy Kim, Christopher Perez, Aditya Sood, Mehdi Asheghi, Kenneth E. Goodson, Woosung Park
Summary: Transmission electron microscopy (TEM) is a crucial tool for atomic-scale material characterization, with electron irradiation causing inadvertent heating in materials. This study developed a microscopic model to quantify beam-induced heating and provide guidelines for estimating temperature rise, extending the ability to quantify thermal impact on materials down to the atomic scale.
Article
Nanoscience & Nanotechnology
Feng Xiong, Eilam Yalon, Connor J. McClellan, Jinsong Zhang, Ozgur Burak Aslan, Aditya Sood, Jie Sun, Christopher M. Andolina, Wissam A. Saidi, Kenneth E. Goodson, Tony F. Heinz, Yi Cui, Eric Pop
Summary: Interlayer intercalation provides an effective way to modulate the material properties of layered 2D materials, as demonstrated by the reversible tuning of carrier density and thermal boundary conductance in Li-intercalated bilayer MoS2 nanosheets. The combination of electrical measurements and Raman spectroscopy allows for probing both electrical and thermal properties simultaneously, revealing intercalation as a reversible tool to control both aspects of 2D layers.
Article
Nanoscience & Nanotechnology
Allison C. Hinckley, Sean C. Andrews, Marc T. Dunham, Aditya Sood, Michael T. Barako, Sebastian Schneider, Michael F. Toney, Kenneth E. Goodson, Zhenan Bao
Summary: Polymer-based materials have great potential for thermoelectric applications, though limited by poor electrical properties. By utilizing solution-shearing deposition and directionally applied solvent treatments, high power factors exceeding 800 mu W m(-1) K-2 can be achieved in PEDOT:PSS thin films. Structural alignment of PEDOT chains and larger-sized domains play a crucial role in enhancing electrical conductivity. Further improvements to power factor are expected through device geometry and postdeposition solvent shearing optimization.
ADVANCED ELECTRONIC MATERIALS
(2021)
Article
Chemistry, Multidisciplinary
James K. Utterback, Aditya Sood, Igor Coropceanu, Burak Guzelturk, Dmitri Talapin, Aaron M. Lindenberg, Naomi S. Ginsberg
Summary: The study reveals that heat transport at the nanoscale appears subdiffusive due to the tortuosity of heat flow caused by a distribution of nonconductive voids. This finding suggests that heat can navigate circuitous pathways in disordered films of gold nanocrystals.
Article
Nanoscience & Nanotechnology
Richa Mitra, Manas Ranjan Sahu, Aditya Sood, Takashi Taniguchi, Kenji Watanabe, Hadas Shtrikman, Subroto Mukerjee, A. K. Sood, Anindya Das
Summary: Thermoelectric measurements show anomalous behavior in monolayer graphene-nanowire heterostructures, with large oscillations as a function of doping concentration. The nanowire acts as a local heater in the graphene channel, inducing a thermoelectric voltage. The oscillations are attributed to modified density of states in monolayer graphene caused by the nanowire's electrostatic potential.
Article
Materials Science, Multidisciplinary
Michelle E. Chen, Miguel Munoz Rojo, Feifei Lian, Justin Koeln, Aditya Sood, Stephanie M. Bohaichuk, Christopher M. Neumann, Sarah G. Garrow, Kenneth E. Goodson, Andrew G. Alleyne, Eric Pop
Summary: Graphene-based thermal switches offer a new opportunity for active control of fast thermal transients, with low operating voltage and high thermal switching ratio. A compact thermal model is developed for double-clamped suspended membrane thermal switches, showcasing the thermal trade-offs between temperature swing and average temperature.
Article
Chemistry, Multidisciplinary
Philipp K. Muscher, Daniel A. Rehn, Aditya Sood, Kipil Lim, Duan Luo, Xiaozhe Shen, Marc Zajac, Feiyu Lu, Apurva Mehta, Yiyang Li, Xijie Wang, Evan J. Reed, William C. Chueh, Aaron M. Lindenberg
Summary: The research demonstrates that intercalating a very small amount of lithium ions into WTe2 can result in large in-plane strains, enabling fast and efficient planar electrochemical actuation.
ADVANCED MATERIALS
(2021)
Article
Multidisciplinary Sciences
Aditya Sood, Xiaozhe Shen, Yin Shi, Suhas Kumar, Su Ji Park, Marc Zajac, Yifei Sun, Long-Qing Chen, Shriram Ramanathan, Xijie Wang, William C. Chueh, Aaron M. Lindenberg
Summary: Understanding the pathways and time scales underlying electrically driven insulator-metal transitions is vital for uncovering the fundamental limits of device operation. By using stroboscopic electron diffraction, researchers discovered an electrically triggered, isostructural state that forms transiently on microsecond time scales and established electrical excitation as a route for uncovering nonequilibrium and metastable phases in correlated materials. This metastable phase is similar to that formed under photoexcitation within picoseconds, suggesting a universal transformation pathway.
Review
Nanoscience & Nanotechnology
Aditya Sood, Andrey D. Poletayev, Daniel A. Cogswell, Peter M. Csernica, J. Tyler Mefford, Dimitrios Fraggedakis, Michael F. Toney, Aaron M. Lindenberg, Martin Z. Bazant, William C. Chueh
Summary: The Review discusses the significance of electrochemical ion insertion as a material design strategy, as well as its wide applications across various fields. By analyzing the operating principles and commonalities among different types of ion insertion devices, it aims to promote the development of interdisciplinary research.
NATURE REVIEWS MATERIALS
(2021)
Article
Chemistry, Multidisciplinary
Aditya Sood, Charles Sievers, Yong Cheol Shin, Victoria Chen, Shunda Chen, Kirby K. H. Smithe, Sukti Chatterjee, Davide Donadio, Kenneth E. Goodson, Eric Pop
Summary: Layering two-dimensional van der Waals materials provides control over atomic placement, influencing vibrational spectra and heat flow. Experimental and simulation studies reveal the design rules for cross-plane heat transport in superlattices assembled from graphene and MoS2 monolayers, demonstrating the importance of vibrational mismatch, interlayer adhesion, and junction asymmetry. An ultra-low effective cross-plane thermal conductivity superlattice is successfully achieved through these design rules.
Article
Chemistry, Multidisciplinary
Wenkai Zheng, Li Xiang, Felipe A. . de Quesada, Mathias Augustin, Zhengguang Lu, Matthew Wilson, Aditya Sood, Fengcheng Wu, Dmitry Shcherbakov, Shahriar Memaran, Ryan E. Baumbach, Gregory T. McCandless, Julia Y. Chan, Song Liu, James H. Edgar, Chun Ning Lau, Chun Hung Lui, Elton J. G. Santos, Aaron Lindenberg, Dmitry Smirnov, Luis Balicas
Summary: Interlayer excitons are studied in hetero-bilayers of metal monochalcogenides, showing adjustable emission spectra and longer lifetimes compared to intralayer excitons. The bound electron-hole pair has a separation close to the calculated interfacial Se separation. These heterostacks have flat interfacial valence bands and are potential candidates for observing magnetism or other correlated electronic phases.
Article
Chemistry, Multidisciplinary
Suji Park, Bo Wang, Tiannan Yang, Jieun Kim, Sahar Saremi, Wenbo Zhao, Burak Guzelturk, Aditya Sood, Clara Nyby, Marc Zajac, Xiaozhe Shen, Michael Kozina, Alexander H. Reid, Stephen Weathersby, Xijie Wang, Lane W. Martin, Long-Qing Chen, Aaron M. Lindenberg
Summary: This study presents the first investigation on the ultrafast dynamics and reconfigurability of polarization in freestanding films of a typical relaxor ferroelectric using femtosecond-resolution electron-scattering techniques. The results demonstrate that femtosecond light pulses can induce changes in both the magnitude and direction of the polarization vector within polar nanodomains on a picosecond time scale. These findings offer new possibilities for dynamically reconfigurable control of polarization in nanoscale relaxor ferroelectrics.
Article
Nanoscience & Nanotechnology
Aditya Sood, Jonah B. Haber, Johan Carlstrom, Elizabeth A. Peterson, Elyse Barre, Johnathan D. Georgaras, Alexander H. M. Reid, Xiaozhe Shen, Marc E. Zajac, Emma C. Regan, Jie Yang, Takashi Taniguchi, Kenji Watanabe, Feng Wang, Xijie Wang, Jeffrey B. Neaton, Tony F. Heinz, Aaron M. Lindenberg, Felipe H. da Jornada, Archana Raja
Summary: In this study, lattice dynamics in photoexcited WSe2/WS2 heterostructures were directly visualized using femtosecond electron diffraction. It was found that both WSe2 and WS2 were heated simultaneously on a picosecond timescale, which cannot be explained by phonon transport across the interface. First-principles calculations revealed a fast channel involving layer-hybridized electronic states, enabling phonon-assisted interlayer transfer of photoexcited electrons. Phonons were emitted in both layers on the femtosecond timescale via this channel, consistent with the simultaneous lattice heating observed experimentally. Strong electron-phonon coupling via layer-hybridized electronic states was identified as a novel route for controlling energy transport across atomic junctions.
NATURE NANOTECHNOLOGY
(2023)