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408 results on '"Wang, Xujun"'

1. Issues and Reflections on Development and Construction of Urban Rail Transit Leftover Underground Spaces

Author

Lin, Lin, Gu, Zhengrong, Ren, Jinglei, Wang, Xujun, di Prisco, Marco, Series Editor, Chen, Sheng-Hong, Series Editor, Vayas, Ioannis, Series Editor, Kumar Shukla, Sanjay, Series Editor, Sharma, Anuj, Series Editor, Kumar, Nagesh, Series Editor, Wang, Chien Ming, Series Editor, Cui, Zhen-Dong, Series Editor, Wu, Wei, editor, Leung, Chun Fai, editor, Zhou, Yingxin, editor, and Li, Xiaozhao, editor

Published
2024
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2. Eliminating edge electronic and phonon states of phosphorene nanoribbon by unique edge reconstruction

Author

LI, Shi-Qi, Liu, Xiangjun, Wang, Xujun, Liu, Hongsheng, Zhang, Gang, Zhao, Jijun, and Gao, Junfeng

Subjects
Condensed Matter - Materials Science
Abstract

Edge termination plays a vital role in determining the properties of 2D materials. By performing compelling ab initio simulations, a lowest-energy U-edge [ZZ(U)] reconstruction is revealed in the bilayer phosphorene. Such reconstruction reduces 60% edge energy compared with the pristine one and occurs almost without energy barrier, implying it should be the dominating edge in reality. The electronic band structure of phosphorene nanoribbon with such reconstruction resembles that of intrinsic 2D layer, exhibiting nearly edgeless band characteristics. Although ZZ(U) changes the topology of phosphorene nanoribbon (PNR), simulated TEM, STEM and STM images indicates it is very hard to be identified. One possible identify method is IR/Raman analyses because ZZ(U) edge alters vibrational modes dramatically. Beyond, it also increases the thermal conductivity of PNR 1.4 and 2.3 times than the pristine and Klein edges.

Published
2022
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5. Cell surface RNAs control neutrophil recruitment

Author

Zhang, Ningning, Tang, Wenwen, Torres, Lidiane, Wang, Xujun, Ajaj, Yasmeen, Zhu, Li, Luan, Yi, Zhou, Hongyue, Wang, Yadong, Zhang, Dingyao, Kurbatov, Vadim, Khan, Sajid A., Kumar, Priti, Hidalgo, Andres, Wu, Dianqing, and Lu, Jun

Published
2024
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7. Infiltrating macrophages amplify doxorubicin-induced cardiac damage: role of catecholamines

Author

Gambardella, Jessica, Santulli, Gaetano, Fiordelisi, Antonella, Cerasuolo, Federica Andrea, Wang, Xujun, Prevete, Nella, Sommella, Eduardo, Avvisato, Roberta, Buonaiuto, Antonietta, Altobelli, Giovanna Giuseppina, Rinaldi, Laura, Chiuso, Francesco, Feliciello, Antonio, Dal Piaz, Fabrizio, Campiglia, Pietro, Ciccarelli, Michele, Morisco, Carmine, Sadoshima, Junichi, Iaccarino, Guido, and Sorriento, Daniela

Published
2023
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15. List of contributors

Author

Adebayo, Ayobami, primary, Artero, Rubén, additional, Avery-Kiejda, Kelly A., additional, Berindan-Neagoe, Ioana, additional, Bertone, Sofia, additional, Bhattarai, Umesh, additional, Blass, Ido, additional, Bonnet, Sebastien, additional, Bosisio, Daniela, additional, Braicu, Cornelia, additional, Calmo, Roberta, additional, Campos-Melo, Danae, additional, Cannataro, Roberto, additional, Chiadò, Alessandro, additional, Chomchan, Pritsana, additional, Cione, Erika, additional, Cristina Caroleo, Maria, additional, Cristino, Alexandre S., additional, Csont, Tamás, additional, De Sarro, Giovambattista, additional, Donkor, Kwame, additional, Eacobacci, Michael, additional, Ferrara, John, additional, Frasca, Federica, additional, Gambardella, Jessica, additional, Gaudenzi, Carolina, additional, González-Barriga, Anchel, additional, Grecco, Andrés, additional, Groen, Kira, additional, Gutierrez-Camino, Angela, additional, Hawley, Zachary C.E., additional, Illarregi, Unai, additional, Jankauskas, Stanislovas S., additional, Jurj, Ancuta, additional, Kansakar, Urna, additional, Lajoie, Annie C., additional, Lamas, Santiago, additional, Liang, Fu-Sen, additional, Linial, Michal, additional, Lombardi, Angela, additional, López-Castel, Arturo, additional, Lopez-Lopez, Elixabet, additional, Lu, Xiya, additional, Martin-Guerrero, Idoia, additional, McLellan, Crystal, additional, Md Yusof, Khairunnisa’, additional, Miguel, Verónica, additional, Mone, Pasquale, additional, Morelli, Marco, additional, Oroujalian, Andisheh, additional, Paulin, Roxane, additional, Pelosi, Elvira, additional, Pérez, Matías Gastón, additional, Peymani, Maryam, additional, Potus, François, additional, Provencher, Steeve, additional, Rosenzvit, Mara Cecilia, additional, Rossi, John, additional, Salvi, Valentina, additional, Santulli, Gaetano, additional, Sárközy, Márta, additional, Scagnolari, Carolina, additional, Scordio, Mirko, additional, Sharkas, Shawn, additional, Shen, Shutong, additional, Song, Meiyi, additional, Song, Min-sun, additional, Sozzani, Silvano, additional, Strong, Michael J., additional, Taguchi, Y.-H., additional, Testa, Ugo, additional, Thillaiyampalam, Gayathri, additional, Tsujimura, Keita, additional, Varzideh, Fahimeh, additional, Wang, Fei, additional, Wang, Xujun, additional, Wilson, Scott, additional, Xiao, Junjie, additional, Yang, Changqing, additional, Zanoaga, Oana, additional, Zhang, Peng, additional, and Zohar, Keren, additional

Published
2022
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16. MicroRNAs and diabetes mellitus

Author

Jankauskas, Stanislovas S., primary, Gambardella, Jessica, additional, Kansakar, Urna, additional, Wilson, Scott, additional, Mone, Pasquale, additional, Varzideh, Fahimeh, additional, Donkor, Kwame, additional, Eacobacci, Michael, additional, Adebayo, Ayobami, additional, Morelli, Marco, additional, Ferrara, John, additional, Wang, Xujun, additional, Lombardi, Angela, additional, and Santulli, Gaetano, additional

Published
2022
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23. Macrophages participate in doxorubicin-induced cardiac damage

Author

Cerasuolo, Federica Andrea, Gambardella, Jessica, Santulli, Gaetano, Fiordelisi, Antonella, Wang, Xujun, Prevete, Nella, Sommella, Edoardo, Avvisato, Roberta, Buonaiuto, Antonietta, Altobelli, Giovanna Giuseppina, Ciccarelli, Michele, Morisco, Carmine, Sadoshima, Junichi, Iaccarino, Guido, and Sorriento, Daniela

Published
2024
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26. IP3 receptor orchestrates maladaptive vascular responses in heart failure

Author

Dridi, Haikel, Santulli, Gaetano, Gambardella, Jessica, Jankauskas, Stanislovas S., Yuan, Qi, Yang, Jingyi, Reiken, Steven, Wang, Xujun, Wronska, Anetta, Liu, Xiaoping, Lacampagne, Alain, and Marks, Andrew R.

Subjects
Calcium channels -- Health aspects -- Physiological aspects, Vascular smooth muscle -- Health aspects -- Physiological aspects, Muscle cells -- Health aspects -- Physiological aspects, Blood circulation disorders -- Development and progression, Heart failure -- Complications and side effects, Health care industry
Abstract

Patients with heart failure (HF) have augmented vascular tone, which increases cardiac workload, impairing ventricular output and promoting further myocardial dysfunction. The molecular mechanisms underlying the maladaptive vascular responses observed in HF are not fully understood. Vascular smooth muscle cells (VSMCs) control vasoconstriction via a [Ca.sup.2+]-dependent process, in which the type 1 inositol 1,4,5-trisphosphate receptor (IP3R1) on the sarcoplasmic reticulum (SR) plays a major role. To dissect the mechanistic contribution of intracellular [Ca.sup.2+] release to the increased vascular tone observed in HF, we analyzed the remodeling of IP3R1 in aortic tissues from patients with HF and from controls. VSMC IP3R1 channels from patients with HF and HF mice were hyperphosphorylated by both serine and tyrosine kinases. VSMCs isolated from [IP3R1.sup.VSMC-/-] mice exhibited blunted [Ca.sup.2+] responses to angiotensin II (ATII) and norepinephrine compared with control VSMCs. [IP3R1.sup.VSMC-/-] mice displayed significantly reduced responses to ATII, both in vivo and ex vivo. HF [IP3R1.sup.VSMC-/-] mice developed significantly less afterload compared with HF [IP3R1.sup.fl/fl] mice and exhibited significantly attenuated progression toward decompensated HF and reduced interstitial fibrosis. [Ca.sup.2+]-dependent phosphorylation of the MLC by MLCK activated VSMC contraction. MLC phosphorylation was markedly increased in VSMCs from patients with HF and HF mice but reduced in VSMCs from HF [IP3R1.sup.VSMC-/-] mice and HF WT mice treated with ML-7. Taken together, our data indicate that VSMC IP3R1 is a major effector of increased vascular tone, which contributes to increased cardiac afterload and decompensation in HF., Introduction Heart failure (HF) is a complex clinical syndrome that remains a leading cause of mortality despite decades of intense efforts to develop novel therapeutics (1, 2). Beginning early in [...]

Published
2022
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30. Role of Endothelial G Protein-Coupled Receptor Kinase 2 in Angioedema

Author

Gambardella, Jessica, Sorriento, Daniela, Bova, Maria, Rusciano, Mariarosaria, Loffredo, Stefania, Wang, Xujun, Petraroli, Angelica, Carucci, Laura, Mormile, Ilaria, Oliveti, Marco, Bruno Morelli, Marco, Fiordelisi, Antonella, Spadaro, Giuseppe, Campiglia, Pietro, Sala, Marina, Trimarco, Bruno, Iaccarino, Guido, Santulli, Gaetano, and Ciccarelli, Michele

Published
2020
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31. Study on the Livelihood Capital Level, Structural Characteristics, and Coupling Coordination Degree of Chinese Beef Cattle Farmers

Author

Wang, Xujun Li and Mingli

Subjects
beef cattle, farmers, livelihood capital, coupling coordination
Abstract

An important foundation of a strong agricultural country is the virtuous cycle of the agricultural production system, and the beef cattle industry is the pivotal industry that guarantees the virtuous cycle of China’s agricultural production system. Farmers are the main force of beef cattle breeding in China, and livelihood capital is an important basis for influencing farmers’ breeding decisions. The measurement and evaluation of the livelihood capital of beef cattle farmers in China can help to comprehensively grasp the current level and structural characteristics of the livelihood capital of beef cattle farmers in China. In this study, the entropy value method and Delphi method were used to determine the weights of each evaluation index, and on this basis, the level, structure, and coupling coordination of farmers’ livelihood capital were measured and classified. The study shows that the overall level of livelihood capital of beef cattle farmers is low; the level and structure of livelihood capital show an uneven phenomenon, and the level of livelihood capital of farmers in different regions and different modes differ significantly. The coupling coordination degree among various measurements of livelihood capital of beef cattle farmers in China is also low, which indicates that a good coordination relationship between various types of livelihood capital has not been formed, which may affect the efficiency of resource allocation. It is suggested to improve the livelihood capital level and coupling coordination among beef cattle farmers and improve the livelihood capital structure of farmers by innovating financial tools, developing forage resources, strengthening technical training and extension, and improving policy support for the beef cattle industry.

Published
2023
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33. Table S3 from Transcription Elongation Machinery Is a Druggable Dependency and Potentiates Immunotherapy in Glioblastoma Stem Cells

Author

Qiu, Zhixin, primary, Zhao, Linjie, primary, Shen, Jia Z., primary, Liang, Zhengyu, primary, Wu, Qiulian, primary, Yang, Kailin, primary, Min, Lihua, primary, Gimple, Ryan C., primary, Yang, Qiyuan, primary, Bhargava, Shruti, primary, Jin, Chunyu, primary, Kim, Cheryl, primary, Hinz, Denise, primary, Dixit, Deobrat, primary, Bernatchez, Jean A., primary, Prager, Briana C., primary, Zhang, Guoxin, primary, Dong, Zhen, primary, Lv, Deguan, primary, Wang, Xujun, primary, Kim, Leo J.Y., primary, Zhu, Zhe, primary, Jones, Katherine A., primary, Zheng, Ye, primary, Wang, Xiuxing, primary, Siqueira-Neto, Jair L., primary, Chavez, Lukas, primary, Fu, Xiang-Dong, primary, Spruck, Charles, primary, and Rich, Jeremy N., primary

Published
2023
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37. Supplementary Figures and Legends from Transcription Elongation Machinery Is a Druggable Dependency and Potentiates Immunotherapy in Glioblastoma Stem Cells

Author

Qiu, Zhixin, primary, Zhao, Linjie, primary, Shen, Jia Z., primary, Liang, Zhengyu, primary, Wu, Qiulian, primary, Yang, Kailin, primary, Min, Lihua, primary, Gimple, Ryan C., primary, Yang, Qiyuan, primary, Bhargava, Shruti, primary, Jin, Chunyu, primary, Kim, Cheryl, primary, Hinz, Denise, primary, Dixit, Deobrat, primary, Bernatchez, Jean A., primary, Prager, Briana C., primary, Zhang, Guoxin, primary, Dong, Zhen, primary, Lv, Deguan, primary, Wang, Xujun, primary, Kim, Leo J.Y., primary, Zhu, Zhe, primary, Jones, Katherine A., primary, Zheng, Ye, primary, Wang, Xiuxing, primary, Siqueira-Neto, Jair L., primary, Chavez, Lukas, primary, Fu, Xiang-Dong, primary, Spruck, Charles, primary, and Rich, Jeremy N., primary

Published
2023
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38. Data from Transcription Elongation Machinery Is a Druggable Dependency and Potentiates Immunotherapy in Glioblastoma Stem Cells

Author

Qiu, Zhixin, primary, Zhao, Linjie, primary, Shen, Jia Z., primary, Liang, Zhengyu, primary, Wu, Qiulian, primary, Yang, Kailin, primary, Min, Lihua, primary, Gimple, Ryan C., primary, Yang, Qiyuan, primary, Bhargava, Shruti, primary, Jin, Chunyu, primary, Kim, Cheryl, primary, Hinz, Denise, primary, Dixit, Deobrat, primary, Bernatchez, Jean A., primary, Prager, Briana C., primary, Zhang, Guoxin, primary, Dong, Zhen, primary, Lv, Deguan, primary, Wang, Xujun, primary, Kim, Leo J.Y., primary, Zhu, Zhe, primary, Jones, Katherine A., primary, Zheng, Ye, primary, Wang, Xiuxing, primary, Siqueira-Neto, Jair L., primary, Chavez, Lukas, primary, Fu, Xiang-Dong, primary, Spruck, Charles, primary, and Rich, Jeremy N., primary

Published
2023
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39. Supplementary Figure 4 from miR-30-5p Functions as a Tumor Suppressor and Novel Therapeutic Tool by Targeting the Oncogenic Wnt/β-Catenin/BCL9 Pathway

Author

Zhao, Jian-Jun, primary, Lin, Jianhong, primary, Zhu, Di, primary, Wang, Xujun, primary, Brooks, Daniel, primary, Chen, Ming, primary, Chu, Zhang-Bo, primary, Takada, Kohichi, primary, Ciccarelli, Bryan, primary, Admin, Samir, primary, Tao, Jianguo, primary, Tai, Yu-Tzu, primary, Treon, Steven, primary, Pinkus, Geraldine, primary, Kuo, Winston Patrick, primary, Hideshima, Teru, primary, Bouxsein, Mary, primary, Munshi, Nikhil, primary, Anderson, Kenneth, primary, and Carrasco, Ruben, primary

Published
2023
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40. Supplementary Figure 2 from miR-30-5p Functions as a Tumor Suppressor and Novel Therapeutic Tool by Targeting the Oncogenic Wnt/β-Catenin/BCL9 Pathway

Author

Zhao, Jian-Jun, primary, Lin, Jianhong, primary, Zhu, Di, primary, Wang, Xujun, primary, Brooks, Daniel, primary, Chen, Ming, primary, Chu, Zhang-Bo, primary, Takada, Kohichi, primary, Ciccarelli, Bryan, primary, Admin, Samir, primary, Tao, Jianguo, primary, Tai, Yu-Tzu, primary, Treon, Steven, primary, Pinkus, Geraldine, primary, Kuo, Winston Patrick, primary, Hideshima, Teru, primary, Bouxsein, Mary, primary, Munshi, Nikhil, primary, Anderson, Kenneth, primary, and Carrasco, Ruben, primary

Published
2023
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41. Supplementary Figure S1 from Targeting the miR-221–222/PUMA/BAK/BAX Pathway Abrogates Dexamethasone Resistance in Multiple Myeloma

Author

Zhao, Jian-Jun, primary, Chu, Zhang-Bo, primary, Hu, Yu, primary, Lin, Jianhong, primary, Wang, Zhongqiu, primary, Jiang, Meng, primary, Chen, Ming, primary, Wang, Xujun, primary, Kang, Yue, primary, Zhou, Yangsheng, primary, Chonghaile, Triona Ni, primary, Johncilla, Melanie E., primary, Tai, Yu-Tzu, primary, Cheng, Jin Q., primary, Letai, Antony, primary, Munshi, Nikhil C., primary, Anderson, Kenneth C., primary, and Carrasco, Ruben D., primary

Published
2023
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42. Supplementary Figure 3 from miR-30-5p Functions as a Tumor Suppressor and Novel Therapeutic Tool by Targeting the Oncogenic Wnt/β-Catenin/BCL9 Pathway

Author

Zhao, Jian-Jun, primary, Lin, Jianhong, primary, Zhu, Di, primary, Wang, Xujun, primary, Brooks, Daniel, primary, Chen, Ming, primary, Chu, Zhang-Bo, primary, Takada, Kohichi, primary, Ciccarelli, Bryan, primary, Admin, Samir, primary, Tao, Jianguo, primary, Tai, Yu-Tzu, primary, Treon, Steven, primary, Pinkus, Geraldine, primary, Kuo, Winston Patrick, primary, Hideshima, Teru, primary, Bouxsein, Mary, primary, Munshi, Nikhil, primary, Anderson, Kenneth, primary, and Carrasco, Ruben, primary

Published
2023
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43. Data from miR-30-5p Functions as a Tumor Suppressor and Novel Therapeutic Tool by Targeting the Oncogenic Wnt/β-Catenin/BCL9 Pathway

Author

Zhao, Jian-Jun, primary, Lin, Jianhong, primary, Zhu, Di, primary, Wang, Xujun, primary, Brooks, Daniel, primary, Chen, Ming, primary, Chu, Zhang-Bo, primary, Takada, Kohichi, primary, Ciccarelli, Bryan, primary, Admin, Samir, primary, Tao, Jianguo, primary, Tai, Yu-Tzu, primary, Treon, Steven, primary, Pinkus, Geraldine, primary, Kuo, Winston Patrick, primary, Hideshima, Teru, primary, Bouxsein, Mary, primary, Munshi, Nikhil, primary, Anderson, Kenneth, primary, and Carrasco, Ruben, primary

Published
2023
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44. Data from Targeting the miR-221–222/PUMA/BAK/BAX Pathway Abrogates Dexamethasone Resistance in Multiple Myeloma

Author

Zhao, Jian-Jun, primary, Chu, Zhang-Bo, primary, Hu, Yu, primary, Lin, Jianhong, primary, Wang, Zhongqiu, primary, Jiang, Meng, primary, Chen, Ming, primary, Wang, Xujun, primary, Kang, Yue, primary, Zhou, Yangsheng, primary, Chonghaile, Triona Ni, primary, Johncilla, Melanie E., primary, Tai, Yu-Tzu, primary, Cheng, Jin Q., primary, Letai, Antony, primary, Munshi, Nikhil C., primary, Anderson, Kenneth C., primary, and Carrasco, Ruben D., primary

Published
2023
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45. Supplementary Table S1 from Targeting the miR-221–222/PUMA/BAK/BAX Pathway Abrogates Dexamethasone Resistance in Multiple Myeloma

Author

Zhao, Jian-Jun, primary, Chu, Zhang-Bo, primary, Hu, Yu, primary, Lin, Jianhong, primary, Wang, Zhongqiu, primary, Jiang, Meng, primary, Chen, Ming, primary, Wang, Xujun, primary, Kang, Yue, primary, Zhou, Yangsheng, primary, Chonghaile, Triona Ni, primary, Johncilla, Melanie E., primary, Tai, Yu-Tzu, primary, Cheng, Jin Q., primary, Letai, Antony, primary, Munshi, Nikhil C., primary, Anderson, Kenneth C., primary, and Carrasco, Ruben D., primary

Published
2023
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46. Supplementary Figure Legends from Targeting the miR-221–222/PUMA/BAK/BAX Pathway Abrogates Dexamethasone Resistance in Multiple Myeloma

Author

Zhao, Jian-Jun, primary, Chu, Zhang-Bo, primary, Hu, Yu, primary, Lin, Jianhong, primary, Wang, Zhongqiu, primary, Jiang, Meng, primary, Chen, Ming, primary, Wang, Xujun, primary, Kang, Yue, primary, Zhou, Yangsheng, primary, Chonghaile, Triona Ni, primary, Johncilla, Melanie E., primary, Tai, Yu-Tzu, primary, Cheng, Jin Q., primary, Letai, Antony, primary, Munshi, Nikhil C., primary, Anderson, Kenneth C., primary, and Carrasco, Ruben D., primary

Published
2023
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47. Supplementary Table 1 from miR-30-5p Functions as a Tumor Suppressor and Novel Therapeutic Tool by Targeting the Oncogenic Wnt/β-Catenin/BCL9 Pathway

Author

Zhao, Jian-Jun, primary, Lin, Jianhong, primary, Zhu, Di, primary, Wang, Xujun, primary, Brooks, Daniel, primary, Chen, Ming, primary, Chu, Zhang-Bo, primary, Takada, Kohichi, primary, Ciccarelli, Bryan, primary, Admin, Samir, primary, Tao, Jianguo, primary, Tai, Yu-Tzu, primary, Treon, Steven, primary, Pinkus, Geraldine, primary, Kuo, Winston Patrick, primary, Hideshima, Teru, primary, Bouxsein, Mary, primary, Munshi, Nikhil, primary, Anderson, Kenneth, primary, and Carrasco, Ruben, primary

Published
2023
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48. Supplementary Figure 1 from miR-30-5p Functions as a Tumor Suppressor and Novel Therapeutic Tool by Targeting the Oncogenic Wnt/β-Catenin/BCL9 Pathway

Author

Zhao, Jian-Jun, primary, Lin, Jianhong, primary, Zhu, Di, primary, Wang, Xujun, primary, Brooks, Daniel, primary, Chen, Ming, primary, Chu, Zhang-Bo, primary, Takada, Kohichi, primary, Ciccarelli, Bryan, primary, Admin, Samir, primary, Tao, Jianguo, primary, Tai, Yu-Tzu, primary, Treon, Steven, primary, Pinkus, Geraldine, primary, Kuo, Winston Patrick, primary, Hideshima, Teru, primary, Bouxsein, Mary, primary, Munshi, Nikhil, primary, Anderson, Kenneth, primary, and Carrasco, Ruben, primary

Published
2023
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49. Supplementary Materials and Methods, Figure Legends from miR-30-5p Functions as a Tumor Suppressor and Novel Therapeutic Tool by Targeting the Oncogenic Wnt/β-Catenin/BCL9 Pathway

Author

Zhao, Jian-Jun, primary, Lin, Jianhong, primary, Zhu, Di, primary, Wang, Xujun, primary, Brooks, Daniel, primary, Chen, Ming, primary, Chu, Zhang-Bo, primary, Takada, Kohichi, primary, Ciccarelli, Bryan, primary, Admin, Samir, primary, Tao, Jianguo, primary, Tai, Yu-Tzu, primary, Treon, Steven, primary, Pinkus, Geraldine, primary, Kuo, Winston Patrick, primary, Hideshima, Teru, primary, Bouxsein, Mary, primary, Munshi, Nikhil, primary, Anderson, Kenneth, primary, and Carrasco, Ruben, primary

Published
2023
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50. Interfacial engineering for the enhancement of interfacial thermal conductance in GaN/AlN heterostructure.

Author

Wang, Quanjie, Wang, Xujun, Liu, Xiangjun, and Zhang, Jie

Subjects
*GALLIUM nitride, *THERMAL resistance, *INTERFACIAL resistance, *BOTTLENECKS (Manufacturing), *PHONON scattering, *MOLECULAR dynamics, *VIBRATIONAL spectra
Abstract

Effective heat dissipation is the bottleneck problem for the development and commercialization of GaN-based high-power electronic and photonic devices. To address this challenge and explore the underlying mechanism of phonon transportation across the GaN/AlN heterointerface, in this work, we formed three types of GaN/AlN heterostructures with distinctively different interfacial morphologies by annealing recrystallization approach. It is found that the interfacial thermal conductance (ITC) of GaN/AlN heterostructures can be remarkably improved by tailoring the interfacial crystal structure and phase morphology. Besides the commonly amorphous phase and ideal ordered wurtzite phase, we further found that AlN may present an additional stable rock salt phase at the interfacial region, and its significant effect on interfacial thermal transport has been observed. Using molecular dynamics simulation, we systematically investigated the effects of different GaN/AlN heterojunctions on the ITCs. Our results suggest that heat dissipation at the GaN/AlN interface is dominated by phonons scattered diffusely by the amorphous region at interfaces and the ITC can be significantly enhanced by recrystallizing the amorphous AlN to rock salt one. Furthermore, through phonon vibrational spectrum, we revealed that phonon modes dominate the energy transport across the interfaces of wurtzite AlN/GaN, amorphous AlN/GaN, and rock salt AlN/GaN are significantly different. Finally, we found the ITC increased with the temperature due to the enhanced inelastic phonon scattering and the presence of additional excited phonon modes at higher temperatures. The findings elucidated here provide a clearer insight into the effect of interfacial microstructures on the interfacial thermal resistance of GaN–substrate interface, which also provide a viable heat management strategy for the high-power GaN-based devices. [ABSTRACT FROM AUTHOR]

Published
2021
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