A5071848661- Wood Treatment and Properties
- Antenna Design and Analysis
- Advanced Sensor and Energy Harvesting Materials
- Advancements in Photolithography Techniques
- Microwave Engineering and Waveguides
- Tree Root and Stability Studies
- Advanced Memory and Neural Computing
- Mechanical and Optical Resonators
- Graphene research and applications
- Gas Sensing Nanomaterials and Sensors
- Conducting polymers and applications
- Structural Analysis of Composite Materials
- Acoustic Wave Resonator Technologies
- Energy Harvesting in Wireless Networks
- Nanofabrication and Lithography Techniques
- Supercapacitor Materials and Fabrication
- Advanced Antenna and Metasurface Technologies
- Electron and X-Ray Spectroscopy Techniques
- 2D Materials and Applications
- Electromagnetic Compatibility and Measurements
- Transition Metal Oxide Nanomaterials
- Thermal Radiation and Cooling Technologies
- Antenna Design and Optimization
- Structural Engineering and Vibration Analysis
- Neuroscience and Neural Engineering
Abu Dhabi National Oil (United Arab Emirates)
2024
K.N.Toosi University of Technology
2024
Baghdad Medical City
2024
Al-Azhar University
2021-2023
University of Technology Sydney
2022-2023
National University of Sciences and Technology
2016-2022
Mercu Buana University
2022
University of Technology - Iraq
2021-2022
University of Hull
2021
University College of Islamabad
2020
Abstract Pressure sensors are a key component in electronic skin (e-skin) sensing systems. Most reported resistive pressure have high sensitivity at low pressures (<5 kPa) to enable ultra-sensitive detection. However, the drops significantly (>5 kPa), which is inadequate for practical applications. For example, actions like gentle touch and object manipulation below 10 kPa 10–100 kPa, respectively. Maintaining wide range great demand. Here, flexible, sensor with foam-like structure...
Surface acoustic wave (SAW) devices have been widely used in different fields and will continue to be of great importance the foreseeable future. These are compact, cost efficient, easy fabricate, a high performance, among other advantages. SAW can work as filters, signal processing units, sensors actuators. They even without batteries operate under harsh environments. In this review, operating principles sensors, including temperature pressure humidity biosensors, discussed. Several...
Recently, two-dimensional materials such as molybdenum disulphide (MoS2) have been demonstrated to realize field effect transistors (FET) with a large current on-off ratio. However, the carrier mobility in backgate MoS2 FET is rather low (typically 0.5–20 cm2/V·s). Here, we report novel field-effect Schottky barrier (FESBT) based on graphene-MoS2 heterojunction (GMH), where characteristics of high from graphene and ratio are properly balanced transistors. Large modulation device (on/off 105)...
Abstract The continuous tuning of the emission spectrum a single light-emitting diode (LED) by an external electrical bias is great technological significance as crucial property in high-quality displays, yet this capability has not been demonstrated existing LEDs. Graphene, tunable optical platform, promising medium to achieve goal. Here we demonstrate bright spectrally electroluminescence from blue (∼450 nm) red (∼750 at graphene oxide/reduced-graphene oxide interface. We explain results...
Laser scribing is an attractive reduced graphene oxide (rGO) growth and patterning technology because the process low-cost, time-efficient, transfer-free, flexible. Various laser-scribed rGO (LSG) components such as capacitors, gas sensors, strain sensors have been demonstrated. However, obstacles remain toward practical application of where all a system are fabricated using laser scribing. Memory components, if developed, will substantially broaden space flexible electronic systems. For...
The human hearing range is from 20 Hz to kHz. However, many animals can hear much higher sound frequencies. Dolphins, especially, have a up 300 To our knowledge, there no data of reported wide-band frequency earphone satisfy both humans and animals. Here, we show that graphene earphones, packaged into commercial casings play sounds ranging 100 50 By using one-step laser scribing technology, wafer-scale flexible earphones be obtained in 25 min. Compared with normal earphone, the has wider...
Flexible strain sensors are an important constituent in soft robotics, health care devices, and the defence industry. Strain characterized by their sensitivity (gauge factor-GF) sensing range. In flexible sensors, simultaneously achieving consistency high has always been challenging. A number of materials derivatives have explored to achieve balanced with respect range limited results. this work, a low-cost piezoresistive sensor developed using reduced graphene oxide (rGO) on...
The pharmacophoric space of glycogen synthase kinase-3β (GSK-3β) was explored using two diverse sets inhibitors. Subsequently, genetic algorithm and multiple linear regression analysis were employed to select optimal combination pharmacophores physicochemical descriptors that access self-consistent predictive quantitative structure–activity relationship (QSAR) against 132 training compounds (r2123 = 0.663, F 24.6, r2LOO 0.592, r2PRESS 29 external test inhibitors 0.695). Two orthogonal...
We report a single device operated in two modes with enough potentiation states to mimic the synaptic learning behaviors.
Piezoelectric materials used in the development of nanoscale mechanical sensors, actuators and energy harvesters have received much attention. More recently, devices made graphene are particular interest because graphene's intriguing electronic properties. Intrinsic has long been considered devoid piezoelectric effect, although flexoelectricity exploited to demonstrate piezoelectricity functionalized nanoribbons. The perceived lack this property restricted use nanoelectromechanical systems...
Abstract 2D carbon materials are examined extensively by virtue of having functional‐groups richness and adaptable interlayer spacing with exquisite electrochemical characteristics flexibility. The phenomenal character these enables them to be resilient in building memristive flexible electronics. present work reports on a facile, inexpensive fabrication scheme free‐standing memory devices based graphene MXene, exhibiting complementary capacitive resistive switching (RS) mechanisms for...
A resistive random access memory (RRAM) device with a tunable switching window is demonstrated for the first time. The SET voltage can be continuously tuned from 0.27 to 4.5 V by electrical gating -10 +35 V. gate-controlled bilayer graphene-electrode RRAM function as 1D1R and potentially increase density.
There is a growing need for developing machine learning applications. However, implementation of the algorithm consumes huge number transistors or memory devices on-chip. Developing capability in single device has so far remained elusive. Here, we build Markov chain based on native oxide two dimensional multilayer tin selenide. After probing electrical transport vertical oxide/tin selenide/tin heterostructures, sudden current jumps are observed during set and reset processes. Furthermore,...
A flexible and transparent single-layer graphene earphone is demonstrated to operate in the frequency range of 20 Hz 200 kHz with high performance.
A novel dual-frequency strip-sleeve monopole antenna for use on a laptop computer is described. The operates simultaneously in the 0.824-0.894 GHz and 1.85-1.99 bands of AMPS PCS systems with return-loss less than -9.5 dB. Effects several parameters input impedance, radiation pattern, directivity are given. considered include an angle between keyboard screen, dielectric materials number parasitic sleeves, covering antenna.
Views Icon Article contents Figures & tables Video Audio Supplementary Data Peer Review Share Twitter Facebook Reddit LinkedIn Tools Reprints and Permissions Cite Search Site Citation Kirill Koshelev, Mohammad Ali Mohammad, Taras Fito, Kenneth L. Westra, Steven K. Dew, Maria Stepanova; Comparison between ZEP PMMA resists for nanoscale electron beam lithography experimentally by numerical modeling. J. Vac. Sci. Technol. B 1 November 2011; 29 (6): 06F306. https://doi.org/10.1116/1.3640794...
The bipolar resistive switching of molybdenum oxide is deliberated while and nickel are used as bottom top electrodes, respectively, to present a device with random access memory (RRAM) characteristics. For the trilayered structure, SET voltage lies around 3.3 V RESET observed be in -2.3 -2.7 range. conduction mechanism has been revealed for Metal-Insulator-Metal (MIM) structure which space-charge-limited current that follows both ohmic Child's law. Furthermore, theoretical study performed...
ZEP brand electron beam resists are well-known for their high sensitivity and etch durability. The various performance metrics such as sensitivity, contrast, resolution of resist depend strongly on the development process. In this work, we investigate ZEP-520 through contrast curves, dense gratings, surface roughness measurements using three different classes developer systems varying solvation strength, ZED-N50, methyl isobutyl ketone (MIBK) : isopropyl alcohol (IPA) 1:3, IPA H 2 O 7:3, at...
A wide-band dual meander-sleeve antenna which is 24% shorter than a straight-wire quarter-wave monopole has been developed. The can be used as vehicular operating simultaneously in the 824-894 MHz and 1850-1990 bands of personal communication services (PCS). we propose bandwidths 38% band 14% within VSWR 2 . radiation patterns are omnidirectional both frequency bands. gain 2.4 dB at 890 with reference to half-wave dipole. maximum 1890 4.4 minimum 2.9 polarization vertical. only limitation...