Article
Optics
Yuting Shi, Marianna Pantouvaki, Joris Van Campenhout, Davide Colucci, Marina Baryshnikova, Bernardette Kunert, Dries Van Thourhout
Summary: The study introduces a loss-coupled distributed feedback microlaser grown on a silicon wafer using nano-ridge engineering, forming the cavity with a metallic grating on top of the nano-ridge without etching III-V material. Experimental verification of simulations shows the optimal duty cycle for the grating is -0.4, providing a good balance between coupling strength and cavity loss for the lasing mode.
Article
Physics, Applied
Daniel E. Field, James W. Pomeroy, Farzan Gity, Michael Schmidt, Pasqualino Torchia, Fan Li, Peter M. Gammon, Vishal A. Shah, Martin Kuball
Summary: Direct bonded Si-on-SiC is a promising alternative for thermal management in power conversion and radio frequency applications in space, and its thermal properties have been characterized using experiments and simulations. The interface of both hydrophobic and hydrophilic bonding processes exhibits good thermal properties. Finite element simulations comparing Si-on-SiC and SOI structures demonstrate the significant thermal advantages of Si-on-SiC, with a >60% decrease in temperature rise.
APPLIED PHYSICS LETTERS
(2022)
Article
Chemistry, Multidisciplinary
Marco A. Giambra, Vaidotas Miseikus, Sergio Pezzini, Simone Marconi, Alberto Montanaro, Filippo Fabbri, Vito Sorianello, Andrea C. Ferrari, Camilla Coletti, Marco Romagnoli
Summary: The article discusses a process for integrating graphene into photonics circuits, demonstrating double-layer graphene electro-absorption modulators with modulation efficiency. The use of chemical vapor deposition and transfer methods ensures reliability of device coverage and performance.
Article
Chemistry, Multidisciplinary
Jianting Lu, Yan He, Churong Ma, Qiaojue Ye, Huaxin Yi, Zhaoqiang Zheng, Jiandong Yao, Guowei Yang
Summary: High-resolution imaging is crucial for intelligent technologies and is important for extracting and storing high-sensitivity information. However, the development of ultrabroadband imaging is hindered by the incompatibility between non-silicon optoelectronic materials and traditional integrated circuits, as well as the lack of competent photosensitive semiconductors in the infrared region. In this study, wafer-scale tellurene photoelectric functional units are monolithically integrated through room-temperature pulsed-laser deposition. The tellurene photodetectors demonstrate wide-spectrum photoresponse and unprecedented photosensitivity, enabling the realization of ultrabroadband imager and high-resolution photoelectric imaging.
ADVANCED MATERIALS
(2023)
Review
Chemistry, Multidisciplinary
Xiangming Xu, Tianchao Guo, Hyunho Kim, Mrinal K. Hota, Rajeh S. Alsaadi, Mario Lanza, Xixiang Zhang, Husam N. Alshareef
Summary: This paper reviews the growth methods of vdW layered 2D materials, focusing on three strategies for achieving large-area continuous film growth at the wafer scale. It also discusses the progress in their applications in integrated devices and advanced epitaxy. The future directions in the growth and scaling of vdW layered 2D materials are also discussed.
ADVANCED MATERIALS
(2022)
Article
Multidisciplinary Sciences
Katherine R. Jinkins, Sean M. Foradori, Vivek Saraswat, Robert M. Jacobberger, Jonathan H. Dwyer, Padma Gopalan, Arganthael Berson, Michael S. Arnold
Summary: Semiconducting carbon nanotubes collected at a liquid/liquid interface self-organize into two-dimensional nematic liquid crystals that globally align with flow and can be transferred onto substrates to generate dense arrays aligned within +/- 6 degrees. The alignment and uniformity of the transferred assemblies enable field-effect transistors with exceptional on-state current density and low variation, showing promise for commercial semiconductor electronics.
Article
Materials Science, Multidisciplinary
Anne Talneau, Gregoire Beaudoin, Gilles Patriarche, Frederique Ducroquet
Summary: This study investigates hybrid bonding of III-V materials on silicon for complementary metal-oxide semiconductor processing, demonstrating efficient electrical transport through oxide-mediated bonded interfaces. This approach opens up possibilities for full 3D design and operation of optoelectronic devices.
PHYSICA STATUS SOLIDI A-APPLICATIONS AND MATERIALS SCIENCE
(2021)
Article
Multidisciplinary Sciences
Baoshan Tang, Hasita Veluri, Yida Li, Zhi Gen Yu, Moaz Waqar, Jin Feng Leong, Maheswari Sivan, Evgeny Zamburg, Yong-Wei Zhang, John Wang, Aaron V-Y Thean
Summary: This study reports the wafer-scale integration of solution-processed 2D MoS2 memristor arrays, demonstrating significant progress in achieving high density and reliability. The research also showcases the feasibility of MoS2 memristors for future analog memory applications and neuromorphic computing.
NATURE COMMUNICATIONS
(2022)
Article
Materials Science, Coatings & Films
Michael E. Liao, Kenny Huynh, Zhe Cheng, Jingjing Shi, Samuel Graham, Mark S. Goorsky
Summary: The impact of postbond annealing on the structural and thermal characteristics of 130 nm thick exfoliated β-Ga2O3 wafer bonded to 4H-SiC was studied. Annealing at 800 degrees C for 1 hour resulted in the removal of residual strain, reduction of lattice mosaicity, and recrystallization of the interfacial region, leading to improved thermal conductivity and thermal boundary conductance. However, further annealing up to 10 hours caused a decrease in thermal boundary conductance.
JOURNAL OF VACUUM SCIENCE & TECHNOLOGY A
(2023)
Article
Chemistry, Multidisciplinary
Deokjae Choi, Inchan Hwang, Youri Lee, Myounghyun Lee, Han-Don Um, Kwanyong Seo
Summary: This study aims to demonstrate that conventional fabrication techniques can be applied to MW-based solar cells at wafer scale while maintaining high efficiency. The results show that increasing the device size can significantly improve the open-circuit voltage and fill factor by reducing recombination losses at the device edge.
ADVANCED FUNCTIONAL MATERIALS
(2022)
Article
Energy & Fuels
Patrick Schygulla, Friedemann D. Heinz, Frank Dimroth, David Lackner
Summary: This article focuses on the material properties and usage of AlGaAs and GaInAsP as middle cell absorber materials in a wafer-bonded III-V//Si triple-junction solar cell. By optimizing the growth conditions, the efficiency of the solar cells was increased, with plans to implement these results into two-terminal III-V//Si triple-junction solar cells in the future.
IEEE JOURNAL OF PHOTOVOLTAICS
(2021)
Article
Engineering, Electrical & Electronic
Shaoying Ke, Xiaoting Xiao, Jinlong Jiao, Xiaoqiang Chen, Zhiwei Huang, Jinrong Zhou, Songyan Chen
Summary: The combination of high-absorption indium gallium arsenide with Si material in an avalanche photodetector (APD) has been theoretically investigated. By inserting a thin polycrystalline Si bonding layer at the interface, the noise and gain-bandwidth product limitations in traditional Si-based epitaxial InGaAs thin films can be overcome, leading to low dark current and high 3-dB bandwidth characteristics.
IEEE TRANSACTIONS ON ELECTRON DEVICES
(2022)
Article
Engineering, Electrical & Electronic
Yongqiang Zhao, Wen Liu, Yidi Bao, Fuhua Yang, Xiaodong Wang
Summary: In this study, we achieved high-strength GaAs/Si direct bonding structures using the plasma-activated bonding method. The surface roughness and height of GaAs wafers were found to have a greater impact on the bonding strength than Si wafers. Additionally, the PAB method effectively controlled the plasma-induced damage in GaAs, resulting in a thin amorphous layer at the GaAs/Si interface.
MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING
(2022)
Article
Engineering, Electrical & Electronic
Cenk Ibrahim Ozdemir, Yannick De Koninck, Didit Yudistira, Nadezda Kuznetsova, Marina Baryshnikova, Dries Van Thourhout, Bernardette Kunert, Marianna Pantouvaki, Joris Van Campenhout
Summary: The study presents high-quality InGaAs/GaAs multi-quantum well waveguide photodetectors monolithically integrated through metalorganic vapor-phase selective-area epitaxial growth and contact metallization in a 300-mm CMOS pilot line. The implementation of nano-ridge engineering concept along with precise control of nano-ridge cross section dimensions and composition results in high internal responsivities of the photodetectors. The III-V/Si nano-ridge epitaxy and waveguide device concept show strong potential to complement Silicon Photonics toolbox with high-quality, high-throughput III-V functionality.
JOURNAL OF LIGHTWAVE TECHNOLOGY
(2021)
Article
Chemistry, Multidisciplinary
Tom Schram, Surajit Sutar, Iuliana Radu, Inge Asselberghs
Summary: This article introduces the applications of large-area 2D-material-based devices in sensor or photonics devices and the back end of line (BEOL), and discusses the requirements, development status, and gaps to be bridged for the full wafer integration of aggressively scaled 2D-based logic circuits.
ADVANCED MATERIALS
(2022)
Article
Materials Science, Ceramics
Shao-Ming Nien, Jian-Long Ruan, Yang-Kuao Kuo, Benjamin Tien-Hsi Lee
Summary: Aluminum nitride is a ceramic material that is widely used in microelectronics and energy fields due to its excellent dielectric and thermal properties. This study demonstrates a procedure for achieving rough-surface wafer bonding of aluminum nitride by activating the surfaces, promoting reactions between aluminum nitride and bonding species, and joining the surfaces through low-temperature annealing.
CERAMICS INTERNATIONAL
(2022)
Article
Biodiversity Conservation
Natalie Yoh, Tigga Kingston, Ellen McArthur, Oliver E. Aylen, Joe Chun-Chia Huang, Emy Ritta Jinggong, Faisal Ali Anwarali Khan, Benjamin P. Y. H. Lee, Simon L. Mitchell, Jake E. Bicknell, Matthew J. Struebig
Summary: This study presents a semi-automated framework for classifying bat calls in Southeast Asia, which can rapidly and accurately process large volumes of data, providing an alternative method for non-invasive monitoring of bats when species-specific classifiers are not yet feasible.
ECOLOGICAL INDICATORS
(2022)
Article
Materials Science, Multidisciplinary
Xiangyu Zhu, Byung Oh Jung, Qingxiao Wang, Yaoqiao Hu, Myungshin Choi, Sunyong Song, Seok Namkung, Namseok Kang, Hui-Youn Shin, Minho Joo, M. J. Kim
Summary: This study investigated the phase transformation and microstructure evolution of magnetic Nd-Ce-Fe-B nanocrystalline melt-spun ribbon. The results revealed the accumulation of rare earth elements at grain boundary areas and the formation of an amorphous layer between grains at high temperatures. Additionally, the primary phase decomposed and transformed into other phases at elevated temperatures.
MATERIALS & DESIGN
(2022)
Article
Materials Science, Multidisciplinary
Zhengqi Wang, Honghui Wu, Yuan Wu, Hailong Huang, Xiangyu Zhu, Yingjie Zhang, Huihui Zhu, Xiaoyuan Yuan, Qiang Chen, Shudao Wang, Xiongjun Liu, Hui Wang, Suihe Jiang, Moon J. Kim, Zhaoping Lu
Summary: In this study, large plasticity and high strength were achieved in NbMoTaW RHEAs through grain boundary engineering and the addition of metalloid B or C. The room-temperature brittleness of as-cast NbMoTaW RHEA was found to be caused by grain boundary segregation of oxygen, which was alleviated by the added metalloids, leading to a change in fracture morphology.
Article
Nanoscience & Nanotechnology
Jiyoung Moon, Masoud Alahbakhshi, Abouzar Gharajeh, Quanwei Li, Ross Haroldson, Sunah Kwon, Roberta Hawkins, Moon J. Kim, Walter Hu, Xiang Zhang, Anvar Zakhidov, Qing Gu
Summary: This study demonstrates the generation of quasi-continuous wave (quasi-CW) lasing from directly patterned perovskite cavities up to high temperatures using nanoimprint lithography and a thin layer of polycarbonate for encapsulation. The polycarbonate layer effectively protects the devices from surface defects and environmental hazards. The results suggest that achieving continuous wave (CW) lasing at room temperature from directly patterned perovskite cavities is within reach.
Article
Chemistry, Multidisciplinary
Aditya Mishra, Riya Bose, Yangzi Zheng, Weijie Xu, Reema McMullen, Abhas B. Mehta, Moon J. Kim, Julia W. P. Hsu, Anton Malko, Jason D. Slinker
Summary: A novel method of incorporating highly luminescent 0D Cs4PbBr6 nanocrystals into a 3D CsPbBr3 film has been designed, leading to a significant increase in external quantum efficiency, luminance, improved morphology, reduced leakage current, reduced hysteresis, and enhanced operational lifetime.
ADVANCED MATERIALS
(2022)
Article
Veterinary Sciences
Randy Foo, Ying Ying Hey, Justin Han Jia Ng, Yok Teng Chionh, Wan Ni Chia, Pui San Kong, Benjamin P. Y-H Lee, Adrian Eng Zheng Kang, Sophie Alison Borthwick, Dolyce Hong Wen Low, Ian Hewitt Mendenhall, Edgar Macabe Pena, Rommel E. Yroy, Beng Sern Ng, Lin-Fa Wang
Summary: Bats are natural reservoirs of highly pathogenic viruses and have unique features that make them ideal for studying infection, cancer, and longevity. However, the lack of breeding bat colonies has been a limitation. To address this, Singapore established a captive bat colony from wild-caught bats, providing a valuable resource for research.
JOURNAL OF THE AMERICAN ASSOCIATION FOR LABORATORY ANIMAL SCIENCE
(2022)
Article
Materials Science, Multidisciplinary
Luhua Wang, Guangzhu Bai, Ning Li, Liyin Gao, Jianwei Li, Ke Xu, Xitao Wang, Hailong Zhang, Jinguo Wang, Moon J. Kim
Summary: Cu/Zr-diamond composites were prepared by coating diamond surfaces with Zr coatings of different thicknesses. The study found that the formed ZrC layer can enhance the interface bonding, but excessively thick ZrC layers result in a decrease in thermal conductivity of the composites.
Review
Chemistry, Physical
Ayman Negm, Matiar M. R. Howlader, Ilya Belyakov, Mohamed Bakr, Shirook Ali, Mehrdad Irannejad, Mustafa Yavuz
Summary: This review explores the potential of plasmonic materials in the field of biosensors. It discusses the physical aspects of plasmonic interactions, highlights mainstream and future plasmonic materials, and describes the substrates used in building plasmonic biosensors. The study identifies the role of 2D materials in enhancing sensor sensitivity and proposes titanium nitride as a promising alternative to gold. It also emphasizes the emerging role of polymer substrates in the design of wearable and point-of-care devices.
Review
Chemistry, Analytical
K. Sinha, Z. Uddin, H. I. Kawsar, S. Islam, M. J. Deen, M. M. R. Howlader
Summary: This article provides a concise review of chronic disease biomarkers acquired by electrochemical sensors and discusses the potential of artificial neural networks in disease monitoring and management. It also describes risk factors, causes, pathophysiological processes, and severity of chronic diseases, as well as how sensed biomarkers and clinical symptoms can be used as features for machine learning algorithms. Finally, it explores how patterns in biosensor data uncovered by artificial neural networks can be used to predict and diagnose chronic diseases. This review will contribute to the development of artificial neural network-based analytical tools for chronic diseases and other healthcare applications in the future.
TRAC-TRENDS IN ANALYTICAL CHEMISTRY
(2023)
Article
Materials Science, Multidisciplinary
Ayman Negm, Matiar M. R. Howlader, Mohamed Bakr, Shirook Ali
Summary: Non-invasive detection of biomarkers is important for early screening of diseases. This paper presents a numerical study of a tunable metasurface for mid-infrared detection using Germanium Antimony Telluride. The design involves using dissimilar materials and optimizing parameters to achieve high-quality resonances for trace analyte sensing. A practical device layout for biomarker detection applications is also proposed.
MATERIALS & DESIGN
(2023)
Article
Biodiversity Conservation
Therese Lamperty, Wen Xuan Chiok, Max D. Y. Khoo, Zachary Amir, Nick Baker, Marcus A. H. Chua, Yi Fei Chung, Yen Kheng Chua, Joshua J. -M. Koh, Benjamin P. Y. -H. Lee, Shawn K. Y. Lum, Calebe P. Mendes, Jonathan Ngiam, Anthony ODempsey, Kenny G. C. Png, Adia R. Sophie, Lorraine Tan, Robert Teo, Noel Thomas, Li Tianjiao, Bryan Lim Tze-Ming, Adrian H. B. Loo, David A. Wardle, Matthew Scott Luskin
Summary: Rewilding, or the re-establishment of extinct wildlife, is considered as a means to restore biodiversity and ecosystem processes, but there are limited real-world examples of this process, especially in Southeast Asia. Using camera trap data, occupancy models, and input from local experts, this study examines the natural recolonization of two native large herbivores in Singapore. Sambar deer have only colonized nearby forest fragments with low abundance, while wild pigs have rapidly expanded their range and abundance across Singapore. The divergent rewilding trajectories between these two species suggest different conservation outcomes and management requirements.
CONSERVATION SCIENCE AND PRACTICE
(2023)
Article
Ecology
Kai Ning Lim, Malcolm C. K. Soh, Duncan Y. W. Leong, Adrian H. B. Loo, Benjamin P. Y. -H. Lee, Kenneth B. H. Er
Summary: The feral pigeon is a globally commensal bird that can cause disamenities and spread diseases. The management of their population can be achieved by limiting food and reducing the availability of roosting and nesting sites. However, there is limited knowledge about their roosting and nesting preferences.
ECOLOGICAL SOLUTIONS AND EVIDENCE
(2023)
Review
Chemistry, Analytical
Grace Burns, Md Younus Ali, Matiar M. R. Howlader
Summary: This review discusses advances in the development and use of electrochemical dopamine sensors in the past five years and identifies areas for improvement in clinical applications. Current dopamine sensors need further improvement in performance for real sample detection.
TRAC-TRENDS IN ANALYTICAL CHEMISTRY
(2023)
Article
Chemistry, Analytical
Maksud M. Alam, Matiar M. R. Howlader
Summary: A high-performance, low-cost nonenzymatic sensor for sweat glucose detection has been developed using thermally grown native oxide of copper. The sensor exhibits excellent sensitivity, linearity, stability, and selectivity, making it a promising alternative for real-time blood glucose monitoring.
