Article
Chemistry, Multidisciplinary
Mohadeseh A. Baboli, Alireza Abrand, Robert A. Burke, Anastasiia Fedorenko, Thomas S. Wilhelm, Stephen J. Polly, Madan Dubey, Seth M. Hubbard, Parsian K. Mohseni
Summary: This study demonstrates the selective-area van der Waals epitaxy of InAs nanowires on isolated molybdenum disulfide (MoS2) domains. By exploring MOCVD growth parameters, single nanowires are positioned on multi-layer MoS2 micro-plates with pattern-free growth. Pre-growth poly-l-lysine surface treatment is essential for mitigating nucleation along MoS2 edges and promoting growth along the interior region. The resulting crystal structure is a combination of wurtzite and zinc-blend phases with a common lattice arrangement between InAs nanowires and MoS2 domains.
NANOSCALE ADVANCES
(2021)
Article
Chemistry, Physical
Valentina Zannier, Ang Li, Francesca Rossi, Sachin Yadav, Karl Petersson, Lucia Sorba
Summary: In order to use III-V compound semiconductors as active channel materials in advanced electronic and quantum devices, it is important to achieve a good epitaxial growth on silicon substrates. The study reports on the selective-area growth of GaP/InGaP/InP/InAsP buffer layer nanotemplates on GaP substrates which are closely lattice-matched to silicon, suitable for the integration of in-plane InAs nanowires. The results demonstrate that a growth sequence of thin layers with progressively increasing lattice parameters is effective to efficiently relax the strain and eventually obtain high quality in-plane InAs nanowires on large lattice-mismatched substrates.
Article
Materials Science, Multidisciplinary
J. Marcelo J. Lopes, Dietmar Czubak, Eugenio Zallo, Adriana Figueroa, Charles Guillemard, Manuel Valvidares, Juan Rubio-Zuazo, Jesus Lopez-Sanchez, Sergio O. Valenzuela, Michael Hanke, Manfred Ramsteiner
Summary: The scalable fabrication of magnetic 2D materials and heterostructures using van der Waals epitaxy has been achieved with the successful growth of layered magnetic metal Fe3GeTe2 on graphene. The resulting FGT/graphene heterostructure films exhibit stable interfaces and good crystalline quality, with robust out-of-plane ferromagnetism comparable to exfoliated flakes from bulk crystals. These results are crucial for the advancement of wafer-scale growth of vdW heterostructures combining FGT with other layered crystals for multifunctional, atomically thin devices.
Article
Nanoscience & Nanotechnology
Jiangtao Qu, Daria Beznasyuk, Maja Cassidy, Rawa Tanta, Limei Yang, Natalie P. Holmes, Matthew J. Griffith, Peter Krogstrup, Julie M. Cairney
Summary: This study demonstrates the importance of correlative microscopy approaches for characterizing the structural and compositional properties of novel semiconductor nanowires. Combination of atom probe tomography and aberration-corrected transmission electron microscopy revealed detailed information about the nanowire arrays.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Multidisciplinary Sciences
Fang Ren, Bingyao Liu, Zhaolong Chen, Yue Yin, Jingyu Sun, Shuo Zhang, Bei Jiang, Bingzhi Liu, Zhetong Liu, Jianwei Wang, Meng Liang, Guodong Yuan, Jianchang Yan, Tongbo Wei, Xiaoyan Yi, Junxi Wang, Yong Zhang, Jinmin Li, Peng Gao, Zhongfan Liu, Zhiqiang Liu
Summary: A novel nanorod-assisted van der Waals epitaxy method has been developed, allowing for the growth of nearly single-crystalline GaN films on amorphous silica glass substrates. This approach enables the growth and lifting off of GaN-based light-emitting diodes with record internal quantum efficiency, and offers the potential for high-quality growth of nitrides on arbitrary substrates.
Article
Chemistry, Physical
Jiuxiang Dai, Teng Yang, Zhitong Jin, Yunlei Zhong, Xianyu Hu, Jingyi Zou, Weigao Xu, Tao Li, Yuxuan Lin, Xu Zhang, Lin Zhou
Summary: This article reports the van der Waals epitaxy of two-dimensional indium arsenide (InAs) single crystals and investigates their thickness-dependent optical properties. The as-grown InAs flakes exhibit high crystalline quality and homogeneity, and possess high conductivity and carrier mobility in the 2D materials family, which opens up new possibilities for high-performance electronics and optoelectronics applications.
Article
Materials Science, Multidisciplinary
Yixuan Ren, Meng Wei, Sijie Wang, Xingzhao Liu
Summary: One of the major obstacles for the integration of PbSe with Si-based electronics is the lattice mismatch between PbSe and Si. In this work, the potential solution for relaxing the lattice mismatch between PbSe and Si by using van der Waals materials such as graphene and Bi2Se3 is explored.
Article
Chemistry, Multidisciplinary
Hua Lv, Alessandra da Silva, Adriana I. Figueroa, Charles Guillemard, Ivan Fernandez Aguirre, Lorenzo Camosi, Lucia Aballe, Manuel Valvidares, Sergio O. Valenzuela, Juergen Schubert, Martin Schmidbauer, Jens Herfort, Michael Hanke, Achim Trampert, Roman Engel-Herbert, Manfred Ramsteiner, Joao Marcelo J. Lopes
Summary: Large-area growth of Fe5-xGeTe2/graphene heterostructures is achieved by vdW epitaxy of Fe5-xGeTe2 on epitaxial graphene. Magnetic and transport studies show that the ferromagnetic order remains above 300 K with perpendicular magnetic anisotropy. This represents an important advance in the practical implementation of ferromagnetic 2D materials.
Article
Chemistry, Multidisciplinary
Santhanu Panikar Ramanandan, Petar Tomic, Nicholas Paul Morgan, Andrea Giunto, Alok Rudra, Klaus Ensslin, Thomas Ihn, Anna Fontcuberta i Morral
Summary: We successfully obtained a germanium nanowire network by selectively growing on nanopatterned slits in a metalorganic vapor phase epitaxy system. Measurements on the nanowire devices showed high hole doping and short mean free path, while revealing quantum transport phenomena and spin-orbit length.
Article
Chemistry, Multidisciplinary
Dongxue Du, Taehwan Jung, Sebastian Manzo, Zachary LaDuca, Xiaoqi Zheng, Katherine Su, Vivek Saraswat, Jessica McChesney, Michael S. Arnold, Jason Ken Kawasaki
Summary: Remote epitaxy is a promising method for synthesizing lattice-mismatched materials, exfoliating membranes, and reusing expensive substrates. The growth of GdPtSb on clean graphene/sapphire produces a 30 degrees rotated superstructure that cannot be explained by pinhole epitaxy. The proportion of this superstructure increases with decreasing temperature, indicating a competition between remote and pinhole epitaxy.
Article
Chemistry, Physical
Chuanshou Wang, Lu You, David Cobden, Junling Wang
Summary: Research on two-dimensional van der Waals ferroelectrics has experienced significant progress in recent years. This Perspective presents a framework for analysis, provides a review of recent advances, discusses mechanisms and properties for potential applications, and outlines the challenges that need to be addressed. The discovery of ferroelectricity in two-dimensional van der Waals materials has introduced important functionalities to the family of 2D materials, which could revolutionize next-generation nanoelectronics and spintronics. This Perspective briefly reviews recent progress in the field of 2D van der Waals ferroelectrics, focusing on the mechanisms driving spontaneous polarization, unique properties arising from reduced lattice dimensionality, and promising applications. The article concludes with an outlook on challenges and possible future research directions.
Article
Chemistry, Physical
Cong Wang, Chao Xu, Xuyun Guo, Ning Zhang, Jianmin Yan, Jiewei Chen, Wei Yu, Jing-Kai Qin, Ye Zhu, Lain-Jong Li, Yang Chai
Summary: In this study, a Cu foil-assisted alloy-buffer-controlled growth method was designed to epitaxially grow aligned single-crystalline 2D tellurium (Te) on an insulating mica substrate. The in-situ formation of Cu-Te alloy played a key role in alleviating the spatial and temporal non-uniformity of precursor, resulting in the controllable growth of high-quality and highly aligned 2D Te.
Article
Multidisciplinary Sciences
Guowen Yuan, Weilin Liu, Xianlei Huang, Zihao Wan, Chao Wang, Bing Yao, Wenjie Sun, Hang Zheng, Kehan Yang, Zhenjia Zhou, Yuefeng Nie, Jie Xu, Libo Gao
Summary: The authors present a flat-to-flat transfer method for fabricating wafer-scale graphene and graphene-based superlattices with controlled twist angles. The transferred films exhibit minimal defects, homogeneous morphology, and uniform electrical properties, including robust quantum Hall effects. This stacking transfer method can facilitate the large-scale fabrication of graphene-based van der Waals superlattices and accelerate functional device applications.
NATURE COMMUNICATIONS
(2023)
Article
Chemistry, Multidisciplinary
Shuo Zhang, Bingyao Liu, Fang Ren, Yue Yin, Yunyu Wang, Zhaolong Chen, Bei Jiang, Bingzhi Liu, Zhetong Liu, Jingyu Sun, Meng Liang, Jianchang Yan, Tongbo Wei, Xiaoyan Yi, Junxi Wang, Jinmin Li, Peng Gao, Zhongfan Liu, Zhiqiang Liu
Summary: A new strain-modulated growth method is proposed to increase the indium composition in InGaN alloy, improving the efficiency of optoelectronic devices. The design of graphene interlayer and nanorod buffer layer effectively reduces stress, increases indium incorporation, and demonstrates the fabrication of small-sized cyan light-emitting diodes.
Article
Multidisciplinary Sciences
Ingrid Torres, Sadegh Mehdi Aghaei, Nezih Pala, Angelo Gaitas
Summary: Graphene and multilayer graphene (MLG) have versatile properties and wide applications, but their production is challenging. This paper explores metal-induced crystallization to synthesize MLG directly on metal films and insulating substrates at much lower temperatures. Raman spectroscopy confirms the MLG properties of the synthesized carbon structure. The presented tip-based approach offers a simpler fabrication solution for MLG by eliminating photolithographic and transfer steps.
SCIENTIFIC REPORTS
(2023)
Article
Cardiac & Cardiovascular Systems
Juwon Kim, Danbee Kang, Hyejeong Park, Minwoong Kang, Ki Hong Choi, Taek Kyu Park, Joo Myung Lee, Jeong Hoon Yang, Young Bin Song, Jin-Ho Choi, Seung-Hyuk Choi, Hyeon-Cheol Gwon, Eliseo Guallar, Juhee Cho, Joo-Yong Hahn
Summary: This study compared the risk of adverse cardiovascular events between patients receiving moderate-intensity statins plus ezetimibe and those receiving high-intensity statins after a coronary revascularization procedure. The results showed that patients receiving moderate-intensity statins plus ezetimibe had similar rates of major adverse cardiovascular events as patients receiving high-intensity statins.
CARDIOVASCULAR DRUGS AND THERAPY
(2023)
Article
Chemistry, Multidisciplinary
Hongseok Oh, Young Joon Hong, Gyu-Chul Yi, Hyeonjun Baek, Dong Ryeol Lee, Hyun Hwi Lee
Summary: In this study, synchrotron radiation X-ray diffraction analysis is used to analyze the initial growth dynamics of ZnO nanorods on c-Al2O3 substrates. The relationship between ZnO and Al2O3 in heteroepitaxy is revealed through reciprocal space mapping and diffraction image transformation. The growth rate is estimated through atomic force microscopy and Scherrer equation analysis.
CRYSTAL GROWTH & DESIGN
(2023)
Article
Cardiac & Cardiovascular Systems
Joo Myung Lee, Hyun Kuk Kim, Keun Ho Park, Eun Ho Choo, Chan Joon Kim, Seung Hun Lee, Min Chul Kim, Young Joon Hong, Sung Gyun Ahn, Joon-Hyung Doh, Sang Yeub Lee, Sang Don Park, Hyun-Jong Lee, Min Gyu Kang, Jin-Sin Koh, Yun-Kyeong Cho, Chang-Wook Nam, Bon-Kwon Koo, Bong-Ki Lee, Kyeong Ho Yun, David Hong, Hyun Sung Joh, Ki Hong Choi, Taek Kyu Park, Jeong Hoon Yang, Young Bin Song, Seung-Hyuk Choi, Hyeon-Cheol Gwon, Joo-Yong Hahn, FRAME AMI Invest
Summary: For patients with acute myocardial infarction and multivessel coronary artery disease, FFR-guided PCI is superior to angiography-guided PCI in reducing the risk of death or myocardial infarction.
EUROPEAN HEART JOURNAL
(2023)
Article
Medicine, General & Internal
Joo Myung Lee, Hyun Sung Joh, Ki Hong Choi, David Hong, Taek Kyu Park, Jeong Hoon Yang, Young Bin Song, Jin-Ho Choi, Seung-Hyuk Choi, Jin-Ok Jeong, Jong-Young Lee, Young Jin Choi, Jei-Keon Chae, Seung-Ho Hur, Jang-Whan Bae, Ju-Hyeon Oh, Kook-Jin Chun, Hyun-Joong Kim, Byung Ryul Cho, Doosup Shin, Seung Hun Lee, Doyeon Hwang, Hyun-Jong Lee, Ho-Jun Jang, Hyun Kuk Kim, Sang Jin Ha, Eun-Seok Shin, Joon-Hyung Doh, Joo-Yong Hahn, Hyeon-Cheol Gwon
Summary: This study evaluated the mid-term safety and efficacy of Absorb BVS with meticulous device optimization under intravascular imaging guidance. The results showed that BVS had comparable risks of target vessel failure and patient-oriented composite outcome with DES at 2 years. Meticulous device optimization and avoidance of implantation in small vessels improved the outcomes of BVS.
JOURNAL OF KOREAN MEDICAL SCIENCE
(2023)
Article
Cardiac & Cardiovascular Systems
Yu Jin Chung, Ki Hong Choi, Seung Hun Lee, Doosup Shin, David Hong, Sugeon Park, Hyun Sung Joh, Hyun Kuk Kim, Sang Jin Ha, Taek Kyu Park, Jeong Hoon Yang, Young Bin Song, Joo-Yong Hahn, Seung-Hyuk Choi, Hyeon-Cheol Gwon, Joo Myung Lee
Summary: Indeterminate diastolic function is associated with an increased risk of cardiovascular death or admission for heart failure, and is related to coronary microvascular dysfunction. Presence of coronary microvascular dysfunction and elevated left ventricular filling pressure are independent predictors of cardiovascular death or admission for heart failure among patients with indeterminate diastolic function.
JOURNAL OF THE AMERICAN SOCIETY OF ECHOCARDIOGRAPHY
(2023)
Article
Multidisciplinary Sciences
Jiho Shin, Hyunseok Kim, Suresh Sundaram, Junseok Jeong, Bo-In Park, Celesta S. Chang, Joonghoon Choi, Taemin Kim, Mayuran Saravanapavanantham, Kuangye Lu, Sungkyu Kim, Jun Min Suh, Ki Seok Kim, Min-Kyu Song, Yunpeng Liu, Kuan Qiao, Jae Hwan Kim, Yeongin Kim, Ji-Hoon Kang, Jekyung Kim, Doeon Lee, Jaeyong Lee, Justin S. Kim, Han Eol Lee, Hanwool Yeon, Hyun S. Kum, Sang-Hoon Bae, Vladimir Bulovic, Ki Jun Yu, Kyusang Lee, Kwanghun Chung, Young Joon Hong, Abdallah Ougazzaden, Jeehwan Kim
Summary: Researchers have developed a full-color, vertically stacked micro-LED (mu LED) with the highest array density and smallest size reported so far. This was achieved using a two-dimensional materials-based layer transfer technique, enabling the growth of RGB LEDs with submicron thickness on two-dimensional material-coated substrates, followed by stacking and top-down fabrication. This technology not only opens up new possibilities for full-color mu LED displays in augmented and virtual reality applications, but also provides a generalizable platform for other three-dimensional integrated devices.
Article
Cardiac & Cardiovascular Systems
David Hong, Seung Hun Lee, Doosup Shin, Ki Hong Choi, Hyun Kuk Kim, Sang Jin Ha, Hyun Sung Joh, Taek Kyu Park, Jeong Hoon Yang, Young Bin Song, Joo-Yong Hahn, Seung-Hyuk Choi, Hyeon-Cheol Gwon, Joo Myung Lee
Summary: This study evaluated the association between cardiac diastolic dysfunction and coronary microvascular dysfunction (CMD) in patients without significant left ventricular systolic dysfunction and epicardial coronary stenosis. The study found that CMD was independently associated with cardiac diastolic dysfunction and both were associated with an increased risk of cardiovascular death or admission for heart failure.
JOURNAL OF THE AMERICAN HEART ASSOCIATION
(2023)
Article
Cardiac & Cardiovascular Systems
David Hong, Doosup Shin, Seung Hun Lee, Hyun Sung Joh, Ki Hong Choi, Hyun Kuk Kim, Sang Jin Ha, Taek Kyu Park, Jeong Hoon Yang, Young Bin Song, Joo-Yong Hahn, Seung-Hyuk Choi, Hyeon-Cheol Gwon, Joo Myung Lee
Summary: The study aimed to compare the prognosis of coronary microvascular dysfunction according to different patterns of CFR and IMR. The results showed that decreased CFR was associated with an increased risk of heart failure and cardiovascular death, while elevated IMR alone with preserved CFR did not show significant prognostic value.
CIRCULATION-CARDIOVASCULAR INTERVENTIONS
(2023)
Article
Multidisciplinary Sciences
Woo Jin Jang, Ki Hong Choi, Jihoon Kim, Jeong Hoon Yang, Joo-Yong Hahn, Seung-Hyuk Choi, Hyeon-Cheol Gwon, Yang Hyun Cho, Kiick Sung, Wook Sung Kim, Dong Seop Jeong, Young Bin Song
Summary: This study evaluated the impact of sex on mid-term prognosis in patients who underwent coronary artery bypass grafting (CABG). The results showed that there was no significant difference in the incidence of cardiovascular death or myocardia infarction at 5 years between female and male groups.
Article
Cell & Tissue Engineering
Dae Sung Park, Myung Ho Jeong, Yu Jeong Jin, Mi Hyang Na, Doo Sun Sim, Munki Kim, Kyung Hoon Cho, Dae Young Hyun, Seok Oh, Jeong Ha Kim, Kyung Seob Lim, Jun-Kyu Park, Han Ki Kim, Young Joon Hong, Ju Han Kim, Youngkeun Ahn, Jeong Hun Kim
Summary: The mechanical properties, safety, and efficacy of drug-eluting metal-based stents (MBS) and bioresorbable vascular scaffolds (BVS) were evaluated. The BVS showed better mechanical properties and lower restenosis rate than the MBS. Thinner and completely absorbed BVSs should be developed and evaluated for long-term safety and efficacy.
TISSUE ENGINEERING AND REGENERATIVE MEDICINE
(2023)
Article
Cardiac & Cardiovascular Systems
Sang Jun Lee, Se-Eun Kim, Tae-Hwa Go, Dae Ryong Kang, Ho-Seong Jeon, Young-In Kim, Dong-Hyuk Cho, Young Jun Park, Jung-Hee Lee, Jun-Won Lee, Young-Jin Youn, Sang-Hyun Kim, Jang Young Kim, Sung Gyun Ahn
Summary: This study investigated the synergistic association between low-density lipoprotein cholesterol (LDL-C) and remnant cholesterol (remnant-C) levels with incident cardiovascular disease (CVD) in a large Korean population. The results showed that individuals with high levels of both LDL-C and remnant-C had a higher risk of CVD compared to those with normal levels. Additionally, elevated remnant-C levels, independent of LDL-C levels, were associated with an increased risk of CVD.
EUROPEAN JOURNAL OF PREVENTIVE CARDIOLOGY
(2023)
Article
Medicine, General & Internal
Zhao-Yan Song, Moo-Hyun Kim, Han-Cheol Lee, Sung-Ji Park, Moo-Yong Rhee, Jong-Il Choi, Sang-Hyun Kim, In-Ho Chae, Young-Joon Hong, Nam-Ho Lee, Gyo-Seung Hwang, Seung-Ho Hur, Jung-Woo Son, Jei-Keon Chae, Hyo-Soo Kim
Summary: In this study, it was found that the combination therapy of ezetimibe-rosuvastatin and telmisartan can effectively reduce systolic blood pressure and low-density lipoprotein cholesterol levels, and is safe.
JOURNAL OF CLINICAL MEDICINE
(2023)
Article
Cardiac & Cardiovascular Systems
Tae Wan Kim, Ryoung Eun Ko, Soo Jin Na, Chi Ryang Chung, Ki Hong Choi, Chi-Min Park, Jeong Hoon Yang
Summary: This study examined the association between nutritional indices and the occurrence of delirium in the cardiac intensive care unit. The results showed that nutritional indices had a reasonable predictive performance for delirium, with albumin being a potential indicator for its occurrence.
FRONTIERS IN CARDIOVASCULAR MEDICINE
(2023)
Meeting Abstract
Cardiac & Cardiovascular Systems
Yu Jin Chung, Jeong Hoon Yang
JOURNAL OF THE AMERICAN COLLEGE OF CARDIOLOGY
(2023)
Meeting Abstract
Cardiac & Cardiovascular Systems
Jee Sun Shin, Jeong Hoon Yang
JOURNAL OF THE AMERICAN COLLEGE OF CARDIOLOGY
(2023)
