All Outputs (15)

Unique Coexistence of Two Resistive Switching Modes in a Memristor Device Enables Multifunctional Neuromorphic Computing Properties (2024)
Journal Article
Jaafar, A. H., Al Habsi, S. K. S., Braben, T., Venables, C., Francesconi, M. G., Stasiuk, G. J., & Kemp, N. T. (2024). Unique Coexistence of Two Resistive Switching Modes in a Memristor Device Enables Multifunctional Neuromorphic Computing Properties. ACS Applied Materials and Interfaces, 16(33), 43816-43826. https://doi.org/10.1021/acsami.4c07820

We report on hybrid memristor devices consisting of germanium dioxide nanoparticles (GeO2 NP) embedded within a poly(methyl methacrylate) (PMMA) thin film. Besides exhibiting forming-free resistive switching and an uncommon “ON” state in pristine con... Read More about Unique Coexistence of Two Resistive Switching Modes in a Memristor Device Enables Multifunctional Neuromorphic Computing Properties.

Printed and flexible organic and inorganic memristor devices for non-volatile memory applications (2023)
Journal Article
Jaafar, A. H., Gee, A., & Kemp, N. T. (2023). Printed and flexible organic and inorganic memristor devices for non-volatile memory applications. Journal of Physics D: Applied Physics, 56(50), Article 503002. https://doi.org/10.1088/1361-6463/acfaaa

The electronics market is highly competitive and driven by consumers desire for the latest and most sophisticated devices at the lowest cost. In the last decade there has been increasing interest in printing electronic materials on lightweight and fl... Read More about Printed and flexible organic and inorganic memristor devices for non-volatile memory applications.

Optoelectronic Switching Memory Based on ZnO Nanoparticle/Polymer Nanocomposites (2023)
Journal Article
Jaafar, A. H., Lowe, C., Gee, A., & Kemp, N. T. (2023). Optoelectronic Switching Memory Based on ZnO Nanoparticle/Polymer Nanocomposites. ACS Applied Polymer Materials, 5(4), 2367-2373. https://doi.org/10.1021/acsapm.2c02034

Optoelectronic switching memories are emerging as practical candidates for applications of optically tunable neuromorphic computing systems and artificial vision systems. Here, we report on the fabrication of an optoelectronic switching memory device... Read More about Optoelectronic Switching Memory Based on ZnO Nanoparticle/Polymer Nanocomposites.

3D-structured mesoporous silica memristors for neuromorphic switching and reservoir computing (2022)
Journal Article
Jaafar, A. H., Shao, L., Dai, P., Zhang, T., Han, Y., Beanland, R., Kemp, N. T., Bartlett, P. N., Hector, A. L., & Huang, R. (2022). 3D-structured mesoporous silica memristors for neuromorphic switching and reservoir computing. Nanoscale, 14(46), 17170-17181. https://doi.org/10.1039/d2nr05012a

Memristors are emerging as promising candidates for practical application in reservoir computing systems that are capable of temporal information processing. Here, we experimentally implement a physical reservoir computing system using resistive memr... Read More about 3D-structured mesoporous silica memristors for neuromorphic switching and reservoir computing.

Optical Memristors: Review of Switching Mechanisms and New Computing Paradigms (2022)
Book Chapter
Gee, A., Jaafar, A. H., & Kemp, N. T. (2022). Optical Memristors: Review of Switching Mechanisms and New Computing Paradigms. In L. O. Chua, R. Tetzlaff, & A. Slavova (Eds.), Memristor Computing Systems (219-244). Springer International Publishing. https://doi.org/10.1007/978-3-030-90582-8_10

Memristors are known for their low-power non-volatile memory operation, high scalability and simple two-terminal geometry. Their ability to emulate the analogue switching and learning properties of biological synapses has also emerged as a significan... Read More about Optical Memristors: Review of Switching Mechanisms and New Computing Paradigms.

Statistical analysis of spin switching in coupled spin-crossover molecules (2021)
Journal Article
Stegmann, P., Gee, A., Kemp, N. T., & König, J. (2021). Statistical analysis of spin switching in coupled spin-crossover molecules. Physical Review B, 104(12), Article 125431. https://doi.org/10.1103/PhysRevB.104.125431

We study the switching behavior of two spin-crossover molecules residing in a nanojunction device consisting of two closely spaced gold electrodes. The spin states are monitored through a real-time measurement of the resistance of the junction. A sta... Read More about Statistical analysis of spin switching in coupled spin-crossover molecules.

Inhibition of Arginine Methylation Impairs Platelet Function (2021)
Journal Article
Marsden, A. J., Riley, D. R., Barry, A., Khalil, J. S., Guinn, B. A., Kemp, N. T., …Beltran-Alvarez, P. (2021). Inhibition of Arginine Methylation Impairs Platelet Function. ACS Pharmacology & Translational Science, 4(5), 1567-1577. https://doi.org/10.1021/acsptsci.1c00135

Protein arginine methyltransferases (PRMTs) catalyze the transfer of methyl groups to arginine residues in proteins. PRMT inhibitors are novel, promising drugs against cancer that are currently in clinical trials, which include oral administration of... Read More about Inhibition of Arginine Methylation Impairs Platelet Function.

Polymer/TiO2Nanorod Nanocomposite Optical Memristor Device (2021)
Journal Article
Jaafar, A. H., Al Chawa, M. M., Cheng, F., Kelly, S. M., Picos, R., Tetzlaff, R., & Kemp, N. T. (2021). Polymer/TiO2Nanorod Nanocomposite Optical Memristor Device. Journal of Physical Chemistry C, 125(27), 14965-14973. https://doi.org/10.1021/acs.jpcc.1c02799

Modulation of resistive switching memory by light opens the route to new optoelectronic devices that can be controlled both optically and electronically. Applications include integrated circuits with memory elements switchable by light and neuromorph... Read More about Polymer/TiO2Nanorod Nanocomposite Optical Memristor Device.

A Tutorial on Electrochemical Impedance Spectroscopy and Nanogap Electrodes for Biosensing Applications (2021)
Journal Article
Kemp, N. T. (2021). A Tutorial on Electrochemical Impedance Spectroscopy and Nanogap Electrodes for Biosensing Applications. IEEE Sensors Journal, 21(20), 22232-22245. https://doi.org/10.1109/jsen.2021.3084284

Electrochemical Impedance Spectroscopy (EIS) is a powerful measurement technique used by scientists and engineers to characterize and understand the interfacial behavior of liquid-solid interfaces. Such investigations are important in numerous applic... Read More about A Tutorial on Electrochemical Impedance Spectroscopy and Nanogap Electrodes for Biosensing Applications.

Nanorods Versus Nanoparticles: A Comparison Study of Au/ZnO-PMMA/Au Non-Volatile Memory Devices Showing the Importance of Nanostructure Geometry on Conduction Mechanisms and Switching Properties (2019)
Journal Article
Jaafar, A. H., Gee, A., & Kemp, N. T. (2020). Nanorods Versus Nanoparticles: A Comparison Study of Au/ZnO-PMMA/Au Non-Volatile Memory Devices Showing the Importance of Nanostructure Geometry on Conduction Mechanisms and Switching Properties. IEEE Transactions on Nanotechnology, 19, 236-246. https://doi.org/10.1109/TNANO.2019.2949759

Hybrid organic-inorganic devices offer a simple and low cost route to the fabrication of resistive memory devices. However the switching and conduction mechanisms are not well established. This work compares ZnO-based devices made in the same manner... Read More about Nanorods Versus Nanoparticles: A Comparison Study of Au/ZnO-PMMA/Au Non-Volatile Memory Devices Showing the Importance of Nanostructure Geometry on Conduction Mechanisms and Switching Properties.

Evidence of Nanoparticle Migration in Polymeric Hybrid Memristor Devices
Presentation / Conference Contribution
Jaafar, A. H., Gee, A., Hamza, A. O., Eling, C. J., Bouillard, J. S. G., Adawi, A. M., & Kemp, N. T. (2020, September). Evidence of Nanoparticle Migration in Polymeric Hybrid Memristor Devices. Presented at 24th IEEE European Conference on Circuit Theory and Design (ECCTD 2020 ), Sofia, Bulgaria (online)

We report evidence of possible migration of metal nanoparticles in nanoparticle-polymer memristor devices. In bi-layer devices, having a bottom layer containing a mixed nanoparticle polymer blend and a top layer of just the polymer, the light emissio... Read More about Evidence of Nanoparticle Migration in Polymeric Hybrid Memristor Devices.

Capacitive effects and memristive switching in three terminal multilayered MoS 2 devices
Presentation / Conference Contribution
Gater, M., Adawi, A. M., & Kemp, N. T. (2022, May). Capacitive effects and memristive switching in three terminal multilayered MoS 2 devices. Presented at ISCAS 2022, Austin, Texas

We report on the electrical properties of gated two-terminal multilayered molybdenum disulfide (MoS2) memristor devices having a planar architecture. The approach based on highly dispersed MoS2 flakes drop cast onto a bottom gated Si/SiO2 (100nm) waf... Read More about Capacitive effects and memristive switching in three terminal multilayered MoS 2 devices.

Memristor-based LSTM neuromorphic circuits for offshore wind turbine blade fault detection
Presentation / Conference Contribution
Burton, H., Bouillard, J. S., & Kemp, N. (2023, May). Memristor-based LSTM neuromorphic circuits for offshore wind turbine blade fault detection. Presented at 2023 IEEE International Symposium on Circuits and Systems (ISCAS), Monterey, USA

The UK offshore wind industry is rapidly growing to meet CO 2 emission targets. However, the main drawback of the offshore environment is the increased cost of maintenance. Artificial Neural Networks (ANN) show great potential to reduce this cost. Lo... Read More about Memristor-based LSTM neuromorphic circuits for offshore wind turbine blade fault detection.

Optically Controlled Memristor Using Hybrid ZnO Nanorod/Polymer Material
Presentation / Conference Contribution
Jaafar, A. H., & Kemp, N. T. (2023, December). Optically Controlled Memristor Using Hybrid ZnO Nanorod/Polymer Material. Presented at NANOARCH '23: Proceedings of the 18th ACM International Symposium on Nanoscale Architectures, Dresden, Germany

Controlling of resistive switching properties by optical means opens the route to new optoelectronics that can be written optically and read electronically. In this work, we demonstrate optically controlled memristors realized with a hybrid material... Read More about Optically Controlled Memristor Using Hybrid ZnO Nanorod/Polymer Material.

Enhanced Switching in Solid Polymer Electrolyte Memristor Devices via the addition of Interfacial Barriers and Quantum Dots
Presentation / Conference Contribution
Gater, M., Adawi, A., & Kemp, N. (2023, December). Enhanced Switching in Solid Polymer Electrolyte Memristor Devices via the addition of Interfacial Barriers and Quantum Dots. Presented at NANOARCH '23: 18th ACM International Symposium on Nanoscale Architectures, Dresden, Germany

We report on the electrical effects of single and double polymer (polymethacrylate) barriers on polyethylene oxide (PEO) based memristors. The single barrier device with an active layer embedded with WS2 quantum dots is also investigated. The additio... Read More about Enhanced Switching in Solid Polymer Electrolyte Memristor Devices via the addition of Interfacial Barriers and Quantum Dots.