Article
Engineering, Electrical & Electronic
Souhad M. A. Daraghma, Sara Talebi, Vengadesh Periasamy
Summary: DNA, the blueprint of life, has attracted recent attention in its potential applications in electronics. Through experimental and theoretical studies, a better understanding of the electronic properties of DNA, particularly in the charge transfer process, has been achieved. This research provides a clearer conceptualization of the role of each nitrogenous base in the charge transfer process through the DNA molecule.
JOURNAL OF ELECTRONIC MATERIALS
(2021)
Review
Chemistry, Multidisciplinary
Jingjing Liu, Liuyang Zhang, Jiajie Fan, Jiaguo Yu
Summary: This review highlights the advances in triethylamine detection based on chemiresistive sensors, focusing on the testing system, sensing parameters, sensing mechanism, and research status with various chemiresistive sensors. The conclusion, challenges, and future perspectives in this area are also presented.
Article
Chemistry, Inorganic & Nuclear
Bayram Atasagun, Metin Armag, Osman Tugay, Deniz Ulukus, Ali Akbar Hussaini, Murat Yildirim
Summary: The remarkable conducting characteristics of DNA have greatly contributed to the development of DNA-based electronics. This study explores the possibility of using Schottky barrier diodes with semiconductor DNA as the interface in three endemic Eremogone species found in Turkey. By comparing the electrical properties of DNA samples from these species with those from a different genus, Colchicum triphyllum, it was found that morphologically similar species have similar electrical properties. This technique enables the identification, detection, and classification of DNA samples.
INORGANIC CHEMISTRY COMMUNICATIONS
(2023)
Article
Physics, Condensed Matter
Hassan M. Jaber Al-Ta'ii, Ali Ijam
Summary: This study examined the influence of alpha energy level on the Al/DNA/Al Schottky diode through J-V curve. The series resistance for irradiated samples was found to be higher, while the current density increased with increasing electric field. The electrical conductivity of non-radiated samples was higher at a voltage of 6.0 V, highlighting the significance of this device as a detector for alpha particles' radiation in bioelectronics applications.
PHYSICA B-CONDENSED MATTER
(2022)
Article
Biochemistry & Molecular Biology
Anna S. Zhuk, Anna A. Shiriaeva, Yulia V. Andreychuk, Olga V. Kochenova, Elena R. Tarakhovskaya, Vladimir M. Bure, Youri I. Pavlov, Sergey G. Inge-Vechtomov, Elena I. Stepchenkova
Summary: Spontaneous or induced DNA lesions can cause stable gene mutations and chromosomal aberrations, resulting in phenotype changes. Some DNA lesions can temporarily interfere with transcription and mimic mutations. The direct impact of primary DNA lesions on phenotype is not well understood before they are repaired.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2023)
Article
Materials Science, Multidisciplinary
Donglou Ren, Boyang Fu, Zhicheng Li, Bin Zhu, Chen Li, Jingwei Ji, Shuo Chen, Hongli Ma, Xianghua Zhang
Summary: This study investigates the electric properties between antimony selenide (Sb2Se3) and aluminum (Al) interface, revealing that exposure to air generates a Schottky solar cell and the device performance depends on the oxidation thickness. X-ray photoelectron spectroscopy (XPS) measurements reveal that the oxides consist of amorphous Sb2O3, Se, and SeOx. Removal of the oxides results in a transition from Schottky to Ohmic contact. The oxides play a crucial role at the Sb2Se3/Al interface, severely affecting electron transport.
Article
Chemistry, Physical
Jianqun Geng, Lei Gao, Baijin Li, Hangjing Zhou, Jianchen Lu, Jinming Cai
Summary: In this study, the researchers systematically investigated the contact properties between Cu2Se monolayer and a series of experimentally fabricated 2D metals. They found that H-NbSe2 is the most adaptable electrode for monolayer Cu2Se and discovered the fermi level pinning effects in these metal-semiconductor junctions.
APPLIED SURFACE SCIENCE
(2023)
Article
Chemistry, Multidisciplinary
Liangbin Jia, Yao Tang, Ming Li, Meiyan Zhu, Xiaotong Dong, Minggang Zhao, Ye Ma
Summary: The study focuses on developing a method to detect copper ions by anchoring Au nanoparticles on TiO2 nanotube arrays. The introduction of a Schottky junction enhances the specificity and efficiency of the sensor.
ADVANCED MATERIALS INTERFACES
(2021)
Article
Engineering, Electrical & Electronic
Hong-Jhang Syu, Yu-Chieh Huang, Zih-Chun Su, Ruei-Lien Sun, Ching-Fuh Lin
Summary: By utilizing a Si-based Schottky junction and internal photoemission, the detection limit of a Si photodetector has been expanded from the bandgap wavelength of Si to the Schottky barrier wavelength of the metal/Si junction. The Schottky junction composed of Ag and n-type Si has a barrier height of 0.742 eV and a detection limit of 1670 nm. Factors such as metal thickness and device temperature have a significant impact on the device properties.
IEEE TRANSACTIONS ON ELECTRON DEVICES
(2022)
Article
Chemistry, Multidisciplinary
Zhichao Wu, Jing Wen, Ying Qin, Ling Ling, Lei Jiao, Ruizhong Zhang, Zhen Luo, Mengzhen Xi, Liuyong Hu, Wenling Gu, Chengzhou Zhu
Summary: In this study, Au nanoparticles and single atoms (AuSA+NP) loaded on carbon nitride (CN) act as dual active sites, significantly accelerating charge transfer and activating peroxydisulfate. The Schottky junctions between Au NPs and CN effectively trap over-injected electrons to prevent electrode passivation. As a result, the porous CN modified with AuSA+NP exhibits an enhanced and stable electrochemiluminescence (ECL) emission. Furthermore, the designed ECL biosensor based on AuSA+NP-CN shows remarkable performance in detecting organophosphorus pesticides. This innovative strategy has the potential to provide strong and stable ECL emission for practical applications.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Chemistry, Physical
Tayseer Al-Naggar, Ayman M. Abdalla, Farid A. Harraz, Hasan B. Albargi
Summary: The study found that the effects of α particles on the DAM-ADC detector coated with conducting polymer were detectable in Raman and PL spectra, and the PL and UV-Vis responses of the samples were influenced by the track density of the irradiated samples. Both the spectral peak heights and the area under the peaks showed a correlation with the fluencies of α particles in Raman, UV-vis, and PL analysis.
RADIATION PHYSICS AND CHEMISTRY
(2022)
Review
Materials Science, Multidisciplinary
Qingguo Shao, Hao Qi, Chao Li, Kunpeng Cai, Jianxia Dong, Xuhui Liu, Ning Cao, Xiaobei Zang
Summary: This article reviews the recent progress on optimizing graphene/silicon Schottky junction photodetectors, including light management engineering, band engineering, and interfacial engineering. Through optimization, the performance of the Schottky junction can be improved, making it more advantageous in terms of stability, preparation convenience, and sensitivity.
ELECTRONIC MATERIALS LETTERS
(2023)
Article
Chemistry, Multidisciplinary
Loredana Mereuta, Alina Asandei, Ioan Andricioaei, Jonggwan Park, Yoonkyung Park, Tudor Luchian
Summary: This study presents a method to control the passage of captured molecules in a nanopore by manipulating the electrostatic interactions between single-stranded DNAs and low pH-induced charges. The findings suggest that this pH-dependent tethering effect has the potential to provide a simple read-out of nucleotide sequences.
Article
Chemistry, Multidisciplinary
Loredana Mereuta, Alina Asandei, Ioan Andricioaei, Jonggwan Park, Yoonkyung Park, Tudor Luchian
Summary: A pressing challenge in nanopore-based sensing technologies for nucleic acid characterization is the control of analyte translocation. In this study, the manipulation of electrostatic interactions in the α-hemolysin (α-HL) nanopore was used to efficiently control the passage of captured molecules. The electrostatic anchoring of 22-mer single-stranded DNAs (22_ssDNA) at low pH was found to dramatically increase the translocation time of the captured molecules. This discovery has the potential to improve the efficacy of nanopore-based sequencers.
Article
Energy & Fuels
Cheng Yang, Xuanpu Wang, Youlin Wu, Tianlin Hu, Zhiliang Jin
Summary: Constructing a photogenerated carrier-transfer channel based on the load between photocatalysts is an effective strategy to improve the light-absorption capacity and separation efficiency. By embedding MoP on the surface of ZnIn2S4, ZnIn2S4/MoP-20% was formed, which showed a hydrogen production performance 13 times higher than that of ZnIn2S4. The successful construction of a Schottky junction between MoP and ZnIn2S4 accelerated the separation of electron-hole pairs, allowing more effective photogenerated electrons to participate in the photocatalytic hydrogen production reaction.
Article
Physics, Applied
Yen Yew Chan, Subha Bhassu, Vengadesh Periasamy
APPLIED PHYSICS EXPRESS
(2020)
Article
Chemistry, Multidisciplinary
Nastaran Rizan, Tan Yee Shin, Hairul Anuar Tajuddin, Georgepeter Gnana Kumar, Vengadesh Periasamy
Article
Chemistry, Multidisciplinary
Sara Talebi, Souhad M. A. Daraghma, Ramesh T. Subramaniam, Subha Bhassu, Georgepeter Gnana Kumar, Vengadesh Periasamy
Article
Materials Science, Multidisciplinary
Nastaran Rizan, Hairul Anuar Tajuddin, Yee Shin Tan, Zanariah Abdullah, Azila Idris, Vengadesh Periasamy
Summary: The use of DNA in molecular electronics and biosensors has attracted much interest due to its unique self-assembling behavior. Ionic liquid ([BMIM][Ace]) is a potential solvent that ensures long-term stability of DNA structures, improving rectifying profiles in DNA-based devices.
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
(2021)
Article
Engineering, Electrical & Electronic
Souhad M. A. Daraghma, Sara Talebi, Vengadesh Periasamy
Summary: DNA, the blueprint of life, has attracted recent attention in its potential applications in electronics. Through experimental and theoretical studies, a better understanding of the electronic properties of DNA, particularly in the charge transfer process, has been achieved. This research provides a clearer conceptualization of the role of each nitrogenous base in the charge transfer process through the DNA molecule.
JOURNAL OF ELECTRONIC MATERIALS
(2021)
Article
Engineering, Electrical & Electronic
Nur Fatin Farhanah binti Nazarudin, Nastaran Rizan, Noor Azrina Talik, Vengadesh Periasamy, Hideki Nakajima, Saadah Abdul Rahman, Boon Tong Goh
Summary: In this study, DNA/NiSi NWs and DNA/Ag NPs-NiSi NWs Schottky diodes were fabricated, demonstrating significant morphological changes and optical property effects of DNA. Ag NPs-NiSi NWs exhibited better conductivity and rectifying behaviors, indicating higher sensitivity towards DNA compared to NiSi NWs diode.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2021)
Article
Biotechnology & Applied Microbiology
Fong-Lee Ng, Siew-Moi Phang, Cheng-Han Thong, Vengadesh Periasamy, Jeccy Pindah, Kamran Yunus, Adrian C. Fisher
Summary: This study focused on utilizing microalgae for bioremediation of palm oil mill effluent (POME) and developing an algal-biophotovoltaic device to generate bioelectricity. Results showed that culturing microalgae in POME improved growth rate and photosynthetic performance.
ENVIRONMENTAL TECHNOLOGY & INNOVATION
(2021)
Article
Chemistry, Applied
Cheng-Han Thong, N. Priyanga, Ng Fong-Lee, M. Pappathi, Vengadesh Periasamy, Siew-Moi Phang, G. Gnana Kumar
Summary: Microalgae based biophotovoltaic (BPV) cells are proven to be innovative renewable energy generation devices. The development of electrochemically active and stable catalysts is crucial for improving BPV performance. By preparing bimetallic metal organic frameworks (MOFs) of copper (Cu) and nickel (Ni) and loading them onto indium tin oxides (ITO) as BPV anodes, efficient green energy generation can be achieved.
Article
Engineering, Electrical & Electronic
J. Saravanan, Mehboobali Pannipara, Abdullah G. Al-Sehemi, Sara Talebi, Vengadesh Periasamy, Syed Shaheen Shah, Md. Abdul Aziz, G. Gnana Kumar
Summary: The CuO/NiO/ACF membrane demonstrated high sensitivity, low sensing limit, and wide linear range in glucose sensing. The flexibility and innovative technological platform of CuO/NiO/ACF make it a promising material for high performance and durable glucose sensors.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2021)
Article
Chemistry, Inorganic & Nuclear
Hassan M. Jaber AL-Ta'ii, Entethar Jamil Rmadhan
Summary: The optical and structural properties of cellulose nitrate polymer (CN-85) were studied after annealing and irradiation, revealing changes in band gap energy and Urbach's energy values. UV-VIS analysis showed a shift in absorption edge towards longer wavelengths. This technique holds potential benefits for a wide range of applications including optoelectronics and microelectronic devices.
APPLIED RADIATION AND ISOTOPES
(2021)
Article
Chemistry, Multidisciplinary
Vengadesh Periasamy, Muhammad Musoddiq Jaafar, Karthikeyan Chandrasekaran, Sara Talebi, Fong Lee Ng, Siew Moi Phang, Georgepeter Gnana Kumar, Mitsumasa Iwamoto
Summary: The prevalence of photosynthesis and its potential as a renewable energy source has led to the development of solid-state semiconductive devices like photovoltaic solar cells. However, direct utilization of plant-based biophotovoltaics (BPV) has been impracticable. In recent years, fuel cells (FCs) relying on redox potentials of algae suspensions or biofilms have shown promise as clean power generators. These algal BPVs offer advantages such as carbon sequestration and biomass harvesting. Development of high-performance BPVs is reliant on upgraded anode materials with dynamically nanostructured surfaces, but challenges in optimizing these materials hinder commercial viability. Graphene-based carbonaceous materials have been explored for FCs due to their flexible surface functionalization properties, but disorders on the molecular scale restrict efficient charge coupling. Langmuir-Blodgett (LB) film has shown potential in addressing these limitations, but its application in BPVs remains untapped. A comprehensive understanding of LB film fabrication and electron transfer mechanisms is crucial for the scalability of BPVs.
Article
Physics, Condensed Matter
Hassan M. Jaber Al-Ta'ii, Ali Ijam
Summary: This study examined the influence of alpha energy level on the Al/DNA/Al Schottky diode through J-V curve. The series resistance for irradiated samples was found to be higher, while the current density increased with increasing electric field. The electrical conductivity of non-radiated samples was higher at a voltage of 6.0 V, highlighting the significance of this device as a detector for alpha particles' radiation in bioelectronics applications.
PHYSICA B-CONDENSED MATTER
(2022)
Article
Biotechnology & Applied Microbiology
Cheng-Han Thong, Fong-Lee Ng, Vengadesh Periasamy, Wan Jeffrey Basirun, G. Gnana Kumar, Siew-Moi Phang
Summary: The global community is addressing the serious consequences of excessive fossil fuel use by utilizing renewable and non-renewable energy sources together. Biomass feedstocks, including microalgae, are being recognized as important energy providers to meet the needs of a growing economy and society. Algae are efficient at photosynthesis, can grow on various substrates, and are tolerant to extreme conditions. Integrating microalgae into photovoltaic platforms is an innovative technique for low-power energy supply. Our algal biophotovoltaic (BPV) platforms have been improved to produce bioelectricity, treat wastewater, and absorb CO2. This study demonstrates the sustained power output and performance of our BPV platforms after nutrient replenishment, showing their potential as long-term low-power generators.
JOURNAL OF APPLIED PHYCOLOGY
(2023)
Article
Chemistry, Multidisciplinary
Vengadesh Periasamy, Prince Nishchal Narayanaswamy Elumalai, Sara Talebi, Ramesh T. T. Subramaniam, Ramesh Kasi, Mitsumasa Iwamoto, Georgepeter Gnana Kumar
Summary: Conventional three-electrode systems used in electrochemical measurement require time-consuming and maintenance intensive procedures. In this study, a miniaturized printed circuit board (PCB) with the same metal (gold) for all three electrodes was used to simplify the design. The novel PCB-based same-metal three-electrode system showed comparable cyclic voltammetric profiles to conventional systems, but required fewer activation cycles and exhibited higher redox sensitivity and detection window.
Meeting Abstract
Plant Sciences
Cheng Han Thong, Siew Moi Phang, Fong Lee Ng, Vengadesh Periasamy, Kamran Yunus, Adrian C. Fisher