Article
Physics, Applied
Yuto Ando, Manato Deki, Hirotaka Watanabe, Noriyuki Taoka, Atsushi Tanaka, Shugo Nitta, Yoshio Honda, Hisashi Yamada, Mitsuaki Shimizu, Tohru Nakamura, Hiroshi Amano
Summary: The interface properties of GaN metal-insulator-semiconductor (MIS) structures with gate electrodes deposited by electron beam (EB) or resistive heating evaporation were studied, showing that introduced interface charges from the formation of the gate electrode degraded the electron mobility in the MIS channel.
APPLIED PHYSICS EXPRESS
(2021)
Article
Chemistry, Multidisciplinary
Tzu-Jung Huang, Adheesh Ankolekar, Anibal Pacheco-Sanchez, Ivan Puchades
Summary: A new process is developed for the fabrication of buried top-gated graphene transistors with Al2O3 as the gate dielectric, suitable for flexible electronics and laser-induced graphene technology. Tetraethyl-orthosilicate (TEOS) is used as an etch stop for contact via etching of Al2O3. The fabricated devices have low Dirac points, low metal-to-graphene contact resistance, and relatively high hole mobility with non-uniformity.
APPLIED SCIENCES-BASEL
(2023)
Article
Chemistry, Multidisciplinary
Bitnuri Kwon, Hyeonhu Bae, Hoonkyung Lee, Seunghyun Kim, Jinhyun Hwang, Hyungsub Lim, Jung Hun Lee, Kilwon Cho, Jongpil Ye, Seungae Lee, Wi Hyoung Lee
Summary: Sensitive and selective detection of target gases is achieved using ultrasensitive n-channel graphene gas sensors doped with ethylene amines. The gas sensors demonstrate excellent response to oxidizing gases such as NO2, with a detection limit of 0.83 ppq. The sensors are fabricated on plastic without vertical stacks of gate-electrode and gate-dielectric, making them highly flexible and suitable for commercial use.
Article
Physics, Applied
Shiro Ozaki, Yusuke Kumazaki, Naoya Okamoto, Naoki Hara, Toshihiro Ohki
Summary: In this study, the researchers achieved flat cutoff frequency and maximum oscillation frequency across a wide bias range on InP-based HEMTs using a steam-annealed ultrathin-Al2O3 gate dielectric. The improvement was attributed to the reduction in gate leakage current and increase in forward breakdown voltage.
APPLIED PHYSICS EXPRESS
(2022)
Article
Materials Science, Multidisciplinary
Meshal Alzaid, Muhammad Zahir Iqbal, Syed Shabhi Haider, Sana Zakar, Sana Khan, C. Bilel, W. S. Mohamed, N. M. A. Hadia, Fai Alsalh
Summary: The study demonstrated the modulation of electrical properties of graphene devices by using honey as a top gate dielectric, leading to increased charge carrier mobility. The results suggest that natural dielectric materials can be a good candidate to replace conventionally available gate dielectrics in FET technology.
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
(2021)
Article
Engineering, Electrical & Electronic
Hanul Kim, Jihoon Kim, Inayat Uddin, Nhat Anh Nguyen Phan, Dongmok Whang, Gil -Ho Kim
Summary: Two-dimensional semiconductor heterostructures have great research potential for electronic and optoelectronic applications due to their scalable thickness, pristine heterostructure interface, and ultrafast carrier transport. We present a dual-channel field-effect transistor based on n-type WS2 and p-type WSe2 layered heterostructure, using multilayered graphene as electrodes to enable electron-dominated ambipolar electrical transport. WS2 exhibits a mobility of 20 cm2 V-1 s(-1) and an on/off ratio of 105, while WSe2 exhibits a mobility of 5 cm2 V-1 s(-1) and an on/off ratio of 104. Moreover, our results show negative Schottky barrier heights between the dual-channel heterostructure and multilayered graphene. This proposed design simplifies the fabrication of devices with integrated heterostructures, especially for complementary metal-oxide semiconductor inverter applications.
ACS APPLIED ELECTRONIC MATERIALS
(2023)
Article
Engineering, Electrical & Electronic
Hanul Kim, Jihoon Kim, Inayat Uddin, Nhat Anh Nguyen Phan, Dongmok Whang, Gil-Ho Kim
Summary: We report a dual-channel field-effect transistor based on n-type WS2 and p-type WSe2 layered heterostructure using multilayered graphene as electrodes to enable electron-dominated ambipolar electrical transport. WS2 exhibits a mobility of 20 cm2 V-1 s-1 and an on/off ratio of 105, whereas WSe2 exhibits a mobility of 5 cm2 V-1 s-1 and an on/off ratio of 104. The proposed design reduces complications in the fabrication of devices with integrated heterostructures, particularly for complementary metal-oxide semiconductor inverter applications.
ACS APPLIED ELECTRONIC MATERIALS
(2023)
Article
Multidisciplinary Sciences
Ranjan Kumar Barik, Lilia M. Woods
Summary: This article introduces a computational dataset of bilayer materials, consisting of 760 structures with their structural, electronic, and transport properties. Different stacking patterns of each bilayer are determined by analyzing the symmetries of their monolayers. Density functional theory calculations, including van der Waals interactions, are performed to evaluate the ground states of each stacking pattern. The dataset can be utilized for materials screening and data-assisted modeling for desired thermoelectric or optoelectronic applications.
Article
Nanoscience & Nanotechnology
Leonardo Martini, Vaidotas Miseikis, David Esteban, Jon Azpeitia, Sergio Pezzini, Paolo Paletti, Michal W. Ochapski, Domenica Convertino, Mar Garcia Hernandez, Ignacio Jimenez, Camilla Coletti
Summary: In this work, high-quality graphene-hexagonal boron nitride (hBN) heterostructures were successfully obtained using scalable approaches. Continuous hBN films were grown on commercially available SiO2/Si and used as receiving substrates for graphene single-crystal matrixes. The structural, chemical, and electronic properties of the heterostructure were investigated, and graphene carrier mobilities exceeding 10,000 cm(2)/Vs were achieved in ambient conditions.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Physics, Applied
Junzhe Kang, Kai Xu, Hanwool Lee, Souvik Bhattacharya, Zijing Zhao, Zhiyu Wang, R. Mohan Sankaran, Wenjuan Zhu
Summary: In this study, SiC MISFETs with a triple layer dielectric stack and a ring structure were demonstrated to have a high potential in extreme-temperature electronics. These MISFETs operated up to 50 degrees C with a high on/off current ratio and a low off-state current at elevated temperatures. The gate dielectric stack showed good thermal stability and excellent dielectric interface. The electron mobility also increased with temperature, indicating the suitability of these MISFETs for extreme environments.
APPLIED PHYSICS LETTERS
(2023)
Article
Chemistry, Multidisciplinary
Hsin-Chia Yang, Sung-Ching Chi, Wen-Shiang Liao
Summary: In the deep submicron regime, FinFET effectively suppresses leakage current using a 3D fin-like channel substrate. However, the subsequent anisotropic plasma dry etching process presents challenges due to dimension loss. Measurement and analysis of the prepared transistors provide important conclusions and potential applications.
APPLIED SCIENCES-BASEL
(2022)
Article
Nanoscience & Nanotechnology
Bokuan Yang, Yangyang Zhao, Jun Chen
Summary: Inserting an Al2O3 thin film between InGaAs and graphene in a Schottky photodiode can significantly reduce dark current density, improve performance, and enhance response to near-infrared and 1550 nm incident light. The increase in Schottky barrier height of graphene/Al2O3/InGaAs is expected to promote the application of graphene NIR PD in sensor technology.
Article
Nanoscience & Nanotechnology
Carsten Strobel, Carlos A. Chavarin, Karola Richter, Martin Knaut, Johanna Reif, Sandra Voelkel, Andreas Jahn, Matthias Albert, Christian Wenger, Robert Kirchner, Johann W. Bartha, Thomas Mikolajick
Summary: A graphene-based three-terminal barristor device was proposed to overcome the low on/off ratios and insufficient current saturation of conventional graphene field-effect transistors. This device, called graphene adjustable-barriers transistor (GABT), utilizes a semiconductor-based gate to modulate the device currents and demonstrates high current gain. The functionality of a silicon-graphene-germanium GABT with ultra-high current gain was successfully demonstrated.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Nanoscience & Nanotechnology
Carsten Strobel, Carlos A. Chavarin, Karola Richter, Martin Knaut, Johanna Reif, Sandra Voelkel, Andreas Jahn, Matthias Albert, Christian Wenger, Robert Kirchner, Johann W. Bartha, Thomas Mikolajick
Summary: In this study, a novel graphene-based transistor called graphene adjustable-barriers transistor (GABT) was proposed and analyzed. It utilizes a semiconductor-based gate to modulate the device currents, overcoming the low on/off ratios and insufficient current saturation of conventional graphene transistors.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Chemistry, Multidisciplinary
Rui Pan, Yuanlingyun Cai, Feifei Zhang, Si Wang, Lianwei Chen, Xingdong Feng, Yingli Ha, Renyan Zhang, Mingbo Pu, Xiong Li, Xiaoliang Ma, Xiangang Luo
Summary: This article introduces a novel graphene/C-60/bismuth telluride/C-60/graphene vertical heterojunction phototransistor, which has a wide response spectral range, high responsivity peak, and fast response speed. Additionally, the analysis of impurity ionization process and regulation of positive and negative photocurrents at a gate voltage are conducted to improve the device's performance.
Article
Engineering, Electrical & Electronic
Uttam Kumar Das, Muhammad M. Hussain
Summary: This article compares the performance of silicon FinFET, carbon nanotube, and 2-D field-effect transistors for upcoming node CMOS logic applications. It concludes that silicon FinFET delivers higher drive current and better energy-delay performances compared to CNT-FET and 2D-FET for next-generation CMOS technology scaling.
IEEE TRANSACTIONS ON ELECTRON DEVICES
(2021)
Review
Nanoscience & Nanotechnology
Nazek El-Atab, Rishabh B. Mishra, Muhammad M. Hussain
Summary: This article reviews the different nanotechnology-enabled techniques for achieving better protection against the SARS-CoV-2 virus, including the development of nanoporous and nanofibrous membranes and triboelectric nanogenerators based masks. The use of nanomaterials-based mask coatings to achieve virus repellent and sterilizing capabilities is also discussed. The usability of nanotechnology-enabled face masks is compared with that of current commercial-grade N95 masks, highlighting the importance of nanotechnology in countering COVID-19 and future pandemics.
Article
Chemistry, Multidisciplinary
Wedyan Babatain, Ulrich Buttner, Nazek El-Atab, Muhammad Mustafa Hussain
Summary: In this research, a fully soft inertial sensor based on laser-induced graphene and liquid metal is proposed and demonstrated. The sensor shows high sensitivity and excellent repeatability, making it an excellent candidate for next-generation wearables motion tracking platforms and soft human-machine interfaces.
Article
Materials Science, Multidisciplinary
Wedyan Babatain, Nazek El-atab, Muhammad Mustafa Hussain
Summary: This paper presents the design, fabrication, and characterization of a novel accelerometer utilizing a graphene-coated liquid metal proof mass integrated with laser-induced graphene sensing elements. The sensor demonstrates excellent performance with high sensitivity, low cross-axis sensitivity, and good repeatability. The developed sensor shows promise for various applications such as inertial sensors, inertial switches, and soft liquid metal robots.
ADVANCED MATERIALS TECHNOLOGIES
(2023)
Article
Engineering, Chemical
Abdulilah Mohammad Mayet, Tzu-Chia Chen, Seyed Mehdi Alizadeh, Ali Awadh Al-Qahtani, Ramy Mohammed Aiesh Qaisi, Hala H. Alhashim, Ehsan Eftekhari-Zadeh
Summary: This study proposes a non-invasive system based on gamma-ray attenuation to detect volumetric percentages in three-phase flows of oil, water, and gas. With the use of neural networks, accurate predictions of volumetric percentages can be made, offering significant implications for the petroleum and petrochemical industries.
Article
Computer Science, Information Systems
Abdulilah Mohammad Mayet, Mohammed Abdul Muqeet, Ali Awadh Alqahtani, Muhammad Abbas Khan, Abdulrahim Othman Dawbi, Hala H. Alhashim, Ramy Mohammed Aiesh Qaisi, Nivin A. Ghamry, Elsayed M. Tag-Eldin
Summary: Transient electronics, such as amorphous metal tungsten nitride (WNx), have the potential to be dissolved in various liquids over time. Their unique properties, including high density and electrical conductivity, make them appealing for applications in implantable devices, secure systems, and environmentally friendly electronics. Understanding the kinetics of dissolution and characterizing the properties of amorphous WNx can further enhance its potential uses.
Article
Chemistry, Analytical
Abdulilah Mohammad Mayet, Tzu-Chia Chen, Seyed Mehdi Alizadeh, Ali Awadh Al-Qahtani, Ramy Mohammed Aiesh Qaisi, Hala H. Alhashim, Ehsan Eftekhari-Zadeh
Summary: Scale inside oil condensate transfer pipes can lead to energy loss, efficiency decrement, and a decrease in pipe diameter. To prevent these issues, non-invasive systems based on gamma-ray attenuation can accurately diagnose the amount of scale. In this study, a detector was used to receive gamma radiation after passing through a test pipe with inner scale, and the received signals were processed using wavelet transform to design a radial basis function (RBF) neural network for predicting the scale thickness value.
Article
Engineering, Electrical & Electronic
Nadeem Qaiser, Sherjeel M. Khan, Wedyan Babatain, Maha Nour, Lana Joharji, Sohail F. Shaikh, Nazek Elatab, Muhammad Mustafa Hussain
Summary: Microfluidic actuators based on thermally-induced actuation are becoming increasingly popular in disease diagnosis and drug release-related devices. A novel copper-based microheater design called square-wave meander is reported, which shows a 44% higher output temperature compared to the conventional meander design. This improvement is attributed to the increased resistance and maintained surface area of the microheater.
JOURNAL OF MICROMECHANICS AND MICROENGINEERING
(2023)
Article
Computer Science, Information Systems
Abdulilah Mohammad Mayet, Neeraj Kumar Shukla, M. Ramkumar Raja, Ijaz Ahmad, Ramy Mohammed Aiesh Qaisi, Ali Awadh Al-Qahtani, Anita Taparwal, Vineet Tirth, Reem Al-Dossary
Summary: In the fourth quarter of 2019, the world was overwhelmed by the COVID-19 pandemic caused by the coronavirus. With no specific drug available for treatment, a vaccine was seen as the ultimate weapon, but the virus's continuous mutations make it more challenging to develop highly potent vaccines. This study proposes the idea of developing an app for early-stage self-diagnosis of COVID-19 symptoms at home or in clinical settings. Through experiments, a logistic regression model trained on a dummy dataset achieves predictive accuracy levels of 80%, 78%, and 90%. The results not only benefit clinicians but also pave the way for more advanced and economical medical apps/devices in the future biomedical research.
Article
Multidisciplinary Sciences
Abdulilah Mohammad Mayet, Seyed Mehdi Alizadeh, V. P. Thafasal Ijyas, John William Grimaldo Guerrero, Neeraj Kumar Shukla, Javed Khan Bhutto, Ehsan Eftekhari-Zadeh, Ramy Mohammed Aiesh Qaisi
Summary: Accumulation of scale in transmission pipelines reduces the internal diameter, resulting in decreased efficiency and energy wastage. A non-invasive gamma ray attenuation system has been found to be an accurate diagnostic technique for identifying volumetric percentages. Using MCNP simulations, a system with two NaI detectors and Am-241 and Ba-133 radioisotopes is the most suitable setup for simulating volume percentage detection. The study shows that three-phase flow through scaled pipes exhibits symmetrical homogeneous flow characteristics. By using gamma ray emission and detection, volumetric percentages can be accurately forecasted with an RMSE of under 1.22, regardless of scale thickness.
Review
Chemistry, Multidisciplinary
Wedyan Babatain, Min Sung Kim, Muhammad Mustafa Hussain
Summary: This review discusses the properties, fabrication techniques, and applications of gallium-based liquid metal droplets (LMDs), and explores the challenges and future directions in this field.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Biotechnology & Applied Microbiology
Altynay Kaidarova, Nathan R. Geraldi, Rory P. Wilson, Juergen Kosel, Mark G. Meekan, Victor M. Eguiluz, Muhammad Mustafa Hussain, Atif Shamim, Hanguang Liao, Mani Srivastava, Swapnil Sayan Saha, Michael S. Strano, Xiangliang Zhang, Boon S. Ooi, Mark Holton, Lloyd W. Hopkins, Xiaojia Jin, Xun Gong, Flavio Quintana, Adylkhan Tovasarov, Assel Tasmagambetova, Carlos M. Duarte
Summary: Human societies rely on marine ecosystems, which are still experiencing degradation. This article discusses the adaptation of sensors and wearable technology developed for humans to improve marine monitoring. It highlights the barriers to transitioning this technology from land to sea, updates on sensor developments for ocean observation, and advocates for wider use of wearables on marine organisms. The authors propose that widespread use of wearables could contribute to an 'internet of marine life' and inform strategies for marine conservation and restoration.
NATURE BIOTECHNOLOGY
(2023)
Article
Chemistry, Analytical
Ramy Mohammed Aiesh Qaisi, Farhad Fouladinia, Abdulilah Mohammad Mayet, John William Grimaldo Guerrero, Hassen Loukil, M. Ramkumar Raja, Mohammed Abdul Muqeet, Ehsan Eftekhari-Zadeh
Summary: This paper presents a new metering system utilizing a neural network and capacitance sensor to predict air and water volume fractions in a homogeneous fluid. The system is not affected by pressure changes and can accurately measure the void fraction.
Article
Optics
Hala H. Alhashim, Abdulilah Mohammad Mayet, Neeraj Kumar Shukla, Shilpi Birla, Mona Aggarwal, Anshul Vats, Hemani Kaushal, Piyush Kuchhal, Ramy Mohammed Aiesh Qaisi, Pooja Sabherwal, Mohammed Abdul Muqeet
Summary: This paper investigates the outage performance of a mixed system and derives analytical expressions for the outage probability. The derived expressions are verified through numerical simulations, and the impact of various link parameters on system performance is discussed.
Article
Construction & Building Technology
Abdulilah Mohammad Mayet, Ali Awadh Al-Qahtani, Ramy Mohammed Aiesh Qaisi, Ijaz Ahmad, Hala H. Alhashim, Ehsan Eftekhari-Zadeh
Summary: Using supplemental pozzolanic materials such as fly ash can help reduce the environmental impact of concrete by reducing carbon dioxide emissions during cement production. It also improves the mechanical characteristics and durability of the concrete. This study developed a model based on the Radial Basis Function (RBF) to estimate the compressive strength of concrete containing different amounts of fly ash at any given age. The model accurately predicted the compressive strength, as validated by experimental measurements. Simple equations were also proposed to determine the compressive strength of fly ash-based concrete.