Article
Materials Science, Multidisciplinary
Xiaohui Liu, Yangyang Hu, Danting Li, Guiling Zhang, Wei Quan Tian
Summary: Based on the successful achievement of single-molecule graphene-C-60 transistors, a series of double-layered GNR-C-60 devices were designed and investigated for their transport properties. The overall conductivity of these devices followed the sequence: H/GNR-C-60 > S/GNR-C-60 > O/GNR-C-60. All devices showed multiple negative differential resistance (NDR) within the considered bias range. The NDR behavior was influenced by various factors such as passivated edges, electrode linkages, interactions between graphene nanoribbons, and applied voltage.
JOURNAL OF MATERIALS CHEMISTRY C
(2023)
Article
Multidisciplinary Sciences
Yaxin Lv, Junfeng Lin, Kai Song, Xuwei Song, Hongjun Zang, Yaping Zang, Daoben Zhu
Summary: The conjugated macrocycles cycloparaphenylenes (CPPs) exhibit high conductance and large tunneling attenuation coefficient, especially at small ring sizes. Radially pi-conjugated molecular systems offer a larger conductance modulation range than standard linear molecules, making them a potential platform for building molecular devices with highly tunable transport behaviors.
Article
Physics, Multidisciplinary
Asma Wasfi, Falah Awwad, Naser Qamhieh, Rabah Iratni, Ahmad Ayesh
Summary: This article presents a graphite oxide FET based sensor for real-time detection of nucleic acid with a detection limit of 1.28 nM of DNA. The sensor sensitivity is enhanced by decorating the graphite oxide channel with composite trimetallic nanoclusters, showing higher sensitivity. The results indicate a promising sensor for real-time, reliable, and cost-effective DNA detection.
NEW JOURNAL OF PHYSICS
(2021)
Article
Chemistry, Physical
Takehiro Matsuyama, Takafumi Yatabe, Tomohiro Yabe, Kazuya Yamaguchi
Summary: This research reports a new method for the synthesis of thioethers, utilizing Pd acetate and tricyclohexylphosphine precursors to catalyze the direct metathesis of thioethers without additives, resulting in high yields. Detailed studies indicate that Pd(0) nanocluster homogeneous catalysts are the actual active species, providing a new perspective for the metal nanocluster-catalyzed transformation of organic molecules.
CATALYSIS SCIENCE & TECHNOLOGY
(2023)
Article
Multidisciplinary Sciences
Yuki Tsuruma, Emi Kawashima, Yoshikazu Nagasaki, Takashi Sekiya, Gaku Imamura, Genki Yoshikawa
Summary: The report introduces next-generation PDs based on thin films of amorphous oxide semiconductors with performance surpassing the silicon limit. This breakthrough was achieved by creating an ideal Schottky interface at the interface, resulting in low specific on-resistance and high breakdown voltage. The technology allows successful fabrication of prototypes on flexible polyimide films, which are not compatible with the fabrication process of bulk single-crystal devices.
SCIENTIFIC REPORTS
(2021)
Article
Engineering, Environmental
Shikang Yin, Yun Liu, Weiqiang Zhou, Huijie Wang, Xianghai Song, Huiqin Wang, Pengwei Huo
Summary: This study successfully prepared SnS2 atomic layer with Pt3Co alloy nanoclusters, which act as highly catalytic active sites, improving the charge separation and transport kinetics and reducing the reaction barrier for enhanced photocatalytic performance. In-situ experiments and calculations confirmed the crucial role of nanoclusters in the photoreduction of CO2.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Nanoscience & Nanotechnology
Hien Duy Mai, Sangmin Jeong, Tri Khoa Nguyen, Jong-Sang Youn, Seungbae Ahn, Cheol-Min Park, Ki-Joon Jeon
Summary: This study successfully developed a sensing approach using Pd/MoS2 heterostructures that can detect low-concentration hydrogen at room temperatures, with performance enhanced three-fold under visible light illumination. Photoactivation also enabled excellent sensing reversibility and reproducibility in the obtained sensor.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Review
Nanoscience & Nanotechnology
Jia Chen, Takhee Lee, Chongwu Zhou
Summary: In memory of Professor Mark Reed, this article presents a summary of his groundbreaking developments in molecular electronic devices, including the measurement of electrical conductance in molecular junctions using the mechanically controlled break junction technique, the demonstration of negative differential resistance, and the observation of the orbital gating effect in molecular junctions. It also provides a brief outlook on the research field of molecular electronics.
Article
Engineering, Chemical
Shuhao Wang, Shaosuo Bing, Yunhao Li, Yong Zhou, Lin Zhang, Congjie Gao
Summary: This study deconstructs the kinetic pathways of interfacial polymerization (IP) to probe the structure of polyamide (PA) nanofilm, demonstrating that the structure can be controlled by adjusting the monomers’ stoichiometric ratio at the new reaction interface. The resulting nodules with controlled size and surface characteristics offer tunable water-salt transport properties. These insights potentially guide the production of high-performance polyamide-based thin-film composite membranes.
JOURNAL OF MEMBRANE SCIENCE
(2021)
Article
Nanoscience & Nanotechnology
Taoufiq Ouaj, Leonard Kramme, Marvin Metzelaars, Jiahan Li, Kenji Watanabe, Takashi Taniguchi, James H. Edgar, Bernd Beschoten, Paul Koegerler, Christoph Stampfer
Summary: This work demonstrates the growth of hBN crystals using an iron flux and their potential for high-performance hBN-graphene devices. The crystals can be detached from the metal using hydrochloric acid, and they exhibit excellent quality for van der Waals heterostructures. The thickness of exfoliated hBN flakes does not correlate with their quality in high mobility graphene devices.
Review
Materials Science, Multidisciplinary
Xiangming Xu, Tianchao Guo, Mario Lanza, Husam N. Alshareef
Summary: MXenes, 2D transition metal carbides and nitrides, have great potential in nanoelectronics. Although research on MXene-based nanoscale electronic devices is still in its early stage, the diverse composition and tunable surface groups of MXenes provide a promising platform for designing novel integrated devices. The emerging sub-branch of 2D electronics, MXene-based nanoelectronics, is expected to bring important discoveries and transformative developments in solid-state physics and emerging devices. This review summarizes the current development in nanoscale MXetronics, including MXene synthesis, property tuning, thin-film preparation, microscale or nanoscale patterning, and on-chip device fabrication, and discusses approaches to optimize MXene device fabrication protocols. Key research directions for the successful future development of MXetronics are also identified.
Article
Physics, Multidisciplinary
Lujun Wang, Andreas Baumgartner, Peter Makk, Simon Zihlmann, Blesson Sam Varghese, David I. Indolese, Kenji Watanabe, Takashi Taniguchi, Christian Schoenenberger
Summary: Mechanically distorting a crystal lattice can engineer the electronic and optical properties of a material, such as introducing a scalar potential in graphene. This method provides a new way to manipulate the optical and electronic properties of materials by using external strain.
COMMUNICATIONS PHYSICS
(2021)
Article
Materials Science, Multidisciplinary
Alex Levchenko, Songci Li, A. V. Andreev
Summary: This study focuses on hydrodynamic electron magnetotransport in graphene devices and reveals a distinct mechanism of magnetoresistance that is absent in systems with Galilean-invariant electron liquid. The magnetoresistance is particularly pronounced near charge neutrality and depends on the intrinsic conductivity and viscosity of the electron liquid.
Article
Materials Science, Multidisciplinary
Shivani Saini, Anup Shrivastava, Ambesh Dixit, Sanjai Singh
Summary: The discovery of 2D Janus materials has accelerated the research and development of novel nanodevices, particularly in the fields of optoelectronics, piezoelectrics, and thermoelectrics. This study explores the thermoelectric behavior of Janus MoSeTe monolayer using an ab-initio technique, calculating electronic, vibrational, and transport parameters, as well as estimating the scattering time at different temperatures. The results show an ultra-low lattice thermal conductivity and a sufficiently high thermoelectric figure of merit, making the material promising for thermoelectric applications under high-temperature conditions.
JOURNAL OF MATERIALS SCIENCE
(2022)
Article
Materials Science, Ceramics
Wang Hui, Zhang Shujuan, Chen Tingwei, Zhang Chuanlin, Luo Haosu, Zheng Renkui
Summary: A simple and efficient method to fabricate PdSe2 thin films on SiO2/Si substrates is reported in this study. The approach could potentially be used for large-scale preparation of PdSe2 films and have potential applications in next-generation electronic and magneto-electronic devices.
JOURNAL OF INORGANIC MATERIALS
(2021)
Article
Polymer Science
Ahmad I. Ayesh, Belal Salah, Rama Nawwas, Asmaa S. Almarri, Aisha N. Al-Thani, Alanoud M. Al-Ahbabi, Noof A. Al Haidous
Summary: Flexible composite membranes consisting of CuO, ZnO nanoparticles, PVA, and GL plasticizer were fabricated for X-ray detector applications. The addition of nanoparticles led to a shift in glass transition temperature and improved thermal resistance. The composite membranes showed a negative temperature coefficient of resistance and a decent x-ray response proportional to the energy, with the best response observed for membranes containing both CuO and ZnO nanoparticles.
JOURNAL OF APPLIED POLYMER SCIENCE
(2022)
Article
Physics, Multidisciplinary
Ahmad Ayesh
Summary: This study investigates the effect of Cu doping of MoSe2 on its adsorption for H2S and SO2 gases using first principles density functional theory. The results show significant changes in the electronic properties and adsorption characteristics of MoSe2 due to Cu doping, enhancing the adsorption capacity for both H2S and SO2 gases. The Cu-modified MoSe2 system exhibits higher sensitivity towards H2S, making it a potential candidate for H2S gas sensor applications.
Article
Materials Science, Multidisciplinary
Ahmad Ayesh, Belal Salah
Summary: This study investigates the application of CuO decorated Fe3O4 nanoparticles as gas sensor devices for H2S. The fabricated sensors show selectivity to H2S, sensitivity to low concentrations, simplified fabrication process, low power consumption, and reasonable response time.
MATERIALS CHEMISTRY AND PHYSICS
(2022)
Article
Nanoscience & Nanotechnology
Ahmad I. Ayesh
Summary: This study investigates the adsorption of NH3 gas on metal-doped molybdenum diselenide structures and finds that the doping enhances the adsorption of NH3 and improves the sensitivity of the sensor.
PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES
(2022)
Article
Biochemical Research Methods
Asma Wasfi, Falah Awwad, Ahmad Ayesh
Summary: DNA sequencing techniques are essential for studying gene functions, and fast, accurate, and affordable DNA base detection enables personalized medicine. In this article, a semi-empirical technique is used to develop a z-shaped graphene device for detecting DNA bases by calculating electronic transport characteristics. The study shows that different DNA bases positioned within a nanopore result in unique electrical signatures, which can be measured through electrical current signals and transmission spectrum measurements.
IEEE TRANSACTIONS ON NANOBIOSCIENCE
(2022)
Article
Physics, Multidisciplinary
Ahmad I. Ayesh
Summary: This study investigates the effect of noble metal doping of MoSe2 on its adsorption of NH3 gas. It is found that the doped MoSe2 structures exhibit significant changes in electronic characteristics and greatly enhanced adsorption capacity compared to the pristine structure. The study suggests that noble metal doping of MoSe2 can be a useful approach for developing sensitive NH3 gas detectors.
Article
Chemistry, Multidisciplinary
Asma Wasfi, Falah Awwad, Juri George Gelovani, Naser Qamhieh, Ahmad I. Ayesh
Summary: This study designs a novel SiNW-FET sensor and investigates its electronic transport properties for accurate detection of the COVID-19 spike protein, demonstrating high sensitivity and selectivity.
Article
Materials Science, Multidisciplinary
Ahmad I. Ayesh
Summary: This study investigates the adsorption of NOx gases on armchair graphene nanoribbons modified with zirconium. The results show a significant improvement in the adsorption capacity of modified structures for NOx gases.
MATERIALS CHEMISTRY AND PHYSICS
(2022)
Article
Physics, Applied
Roya Majidi, Ahmad I. Ayesh
Summary: The potential features of twin T-graphene for anodic applications are studied. The twin T-graphene shows a high specific capacity for sodium atoms and a relatively low diffusion energy barrier, ensuring fast charging and discharging in sodium-ion batteries. A transition between semiconducting and metallic properties is observed during the adsorption process, which is crucial for ion diffusion. The results suggest that twin T-graphene is a suitable anode material for sodium-ion batteries.
JOURNAL OF APPLIED PHYSICS
(2022)
Article
Chemistry, Physical
Roya Majidi, Ahmad I. Ayesh
Summary: The sodium storage behavior of two-dimensional porous carbon sheet T-4,T-4,T-4-graphyne is studied using DFT. The Na atom shows high mobility on the T-4,T-4,T-4-graphyne monolayer due to low energy barrier. The Na storage capacity is as high as Na8C9, exceeding that of graphite and other carbon-based materials. The promising electronic and storage properties make T-4,T-4,T-4-graphyne suitable for Na-ion batteries.
MOLECULAR SIMULATION
(2023)
Article
Chemistry, Multidisciplinary
Muhammad Mushtaq, Norah Algethami, Muhammad Abdul Rauf Khan, Ahmad I. Ayesh, Muhammad Mateen, Amel Laref, Shaimaa A. M. Abdelmohsen, M. Khalid Hossain
Summary: The adsorption of NOx (x = 1, 2) gas molecules on the (001) surface of CoFeMnSi quaternary Heusler alloys was investigated theoretically using density functional theory (DFT) calculations. The adsorption strength was estimated using parameters such as adsorption energy (Ea), charge transfer (Delta Q), charge density difference (CDD), and minimum distance between molecule and surface (d). The results showed that both NO and NO2 molecules undergo chemical adsorption and strongly interact with the surface. Bader charge analysis revealed that the NOx molecules act as charge acceptors by drawing charge from the surface atoms through p-d hybridization.
Article
Physics, Multidisciplinary
Ahmad I. Ayesh
Summary: This study investigates the adsorption capacity of CO, CO2, H2, H2O, NH3, NO, and NO2 gases on boron and nitrogen-modified graphene nanoribbons (CBN). The results show that the vacancy defected CBN structure has favorable adsorption of NO2 and NH3 gases, forming chemical bonds with them. Therefore, introducing a vacancy defect enhances the response of the CBN structure to NO2 and NH3 gases.
CHINESE JOURNAL OF PHYSICS
(2023)
Article
Chemistry, Multidisciplinary
Blandine Fontaine, Youssef Benrkia, Jean-Francois Blach, Christian Mathieu, Pascal Roussel, Ahmad I. Ayesh, Adlane Sayede, Sebastien Saitzek
Summary: Two polymorphic phases (alpha- and beta-Cu2V2O7) of copper pyrovanadate were synthesized and the mechanisms of phase transitions were studied using TGA and DSC. High temperature X-ray diffraction revealed negative thermal expansion coefficients of the lattice parameters. The optimal conditions for producing dense thin films were determined using thermogravimetric analysis and differential scanning calorimetry. The thin films exhibited a beta-Cu2V2O7 polycrystalline phase and showed absorption in the visible range, making them suitable for use as photoanodes.
Article
Engineering, Chemical
Shifa M. R. Shaikh, Mohammad Abdul Quadir, Mustafa S. Nasser, Hamza Rekik, Mohammad K. Hassan, Ahmad I. Ayesh, Sami Sayadi
Summary: This study demonstrates that coagulation-flocculation techniques can effectively achieve flocculation of freshwater microalgae Scenedesmus sp. cultivated using process wastewater, and exhibits non-Newtonian fluid behavior and viscoelastic gel properties.
SEPARATION AND PURIFICATION TECHNOLOGY
(2024)
Article
Chemistry, Multidisciplinary
Touria Bounnit, Ahmad I. Ayesh, Imen Saadaoui, Rihab S. Mohideen, Sami Sayadi
Summary: By studying the effect of SnO2 nanoparticles on algal growth and biocompound production, it was found that lower doses of nanoparticles have more negative impacts on algae, while higher concentrations have a reduced effect on cell morphology and appearance.
ENVIRONMENTAL SCIENCE-NANO
(2022)
