Circular polarization in n-type resonant tunneling diodes with Si delta-doping in the quantum well

Herval, L.K S.; Galeti, H.V.A.; Orsi Gordo, V.; Galvao Gobato, Y.; Brasil, M.J.S.P.; Taylor, D.; Henini, M.

doi:10.1109/SBMicro.2014.6940126

Optically Controlled Memristor Using Hybrid ZnO Nanorod/Polymer Material (2023)
Conference Proceeding
Jaafar, A. H., & Kemp, N. T. (2023). Optically Controlled Memristor Using Hybrid ZnO Nanorod/Polymer Material. In NANOARCH '23: Proceedings of the 18th ACM International Symposium on Nanoscale Architectures. https://doi.org/10.1145/3611315.3633257

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 (2023)
Conference Proceeding
Gater, M., Adawi, A., & Kemp, N. (2023). Enhanced Switching in Solid Polymer Electrolyte Memristor Devices via the addition of Interfacial Barriers and Quantum Dots. In NANOARCH '23: Proceedings of the 18th ACM International Symposium on Nanoscale Architectures. https://doi.org/10.1145/3611315.3633275

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.

An experimental investigation of the effect of surface roughness on sessile droplet evaporation (2023)
Conference Proceeding
Zhang, Z., Yan, Y., & Magnini, M. (2023). An experimental investigation of the effect of surface roughness on sessile droplet evaporation. . https://doi.org/10.1615/IHTC17.130-110

As one of the most common phenomena in nature, droplet evaporation has become a major heat transfer mode and is used widely in industries and scientific fields. For a sessile droplet, the wettability of the substrate surface could make a significant... Read More about An experimental investigation of the effect of surface roughness on sessile droplet evaporation.

Memristor-based LSTM neuromorphic circuits for offshore wind turbine blade fault detection (2023)
Conference Proceeding
Burton, H., Bouillard, J. S., & Kemp, N. (2023). Memristor-based LSTM neuromorphic circuits for offshore wind turbine blade fault detection. In 2023 IEEE International Symposium on Circuits and Systems (ISCAS). https://doi.org/10.1109/iscas46773.2023.10181552

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.

Carrier dynamics in InSe and the impact of terahertz pulses (2022)
Conference Proceeding
Venanzi, T., Selig, M., Pashkin, A., Winnerl, S., Katzer, M., Arora, H., …Schneider, H. (2022). Carrier dynamics in InSe and the impact of terahertz pulses. In IRMMW-THz 2022 47th International Conference on Infrared, Millimeter and Terahertz Waves Conference Program. https://doi.org/10.1109/IRMMW-THz50927.2022.9895949

We investigate the electron-hole dynamics in few-layer InSe, a van der Waals semiconductor with promising opt-electronic properties. We show that terahertz pulses modulate the spontaneous emission via absorption by photo-excited carriers. We further... Read More about Carrier dynamics in InSe and the impact of terahertz pulses.

Capacitive effects and memristive switching in three terminal multilayered MoS 2 devices (2022)
Conference Proceeding
Gater, M., Adawi, A. M., & Kemp, N. T. (2022). Capacitive effects and memristive switching in three terminal multilayered MoS 2 devices. In 2022 IEEE International Symposium on Circuits and Systems (ISCAS)

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.

Transfering ultra-Thin metallic metasurfaces to fibre endoscope probes for advanced imaging (2022)
Conference Proceeding
Fuentes-Dominguez, R., He, F., Cousins, R., Mellor, C. J., & Gordon, G. S. D. (2022). Transfering ultra-Thin metallic metasurfaces to fibre endoscope probes for advanced imaging. In Proceedings SPIE 11953, Optical Fibers and Sensors for Medical Diagnostics, Treatment and Environmental Applications XXII. https://doi.org/10.1117/12.2608774

In this paper we present a method to transfer ultra-Thin polymer-encapsulated metallic metasurfaces onto optical fibers to enable ultra-Thin imaging devices. The metasurface is first produced by conventional e-beam lithography on a silicon substrate... Read More about Transfering ultra-Thin metallic metasurfaces to fibre endoscope probes for advanced imaging.

Optimised hybrid shielding and magnetic field control for emerging quantum technologies (2021)
Conference Proceeding
Hobson, P. J., Packer, M., Holmes, N., Davis, A., Patel, P., Holmes, D., …Fromhold, T. M. (2021). Optimised hybrid shielding and magnetic field control for emerging quantum technologies. In M. J. Padgett, K. Bongs, A. Fedrizzi, & A. Politi (Eds.), Proceedings Volume 11881, Quantum Technology: Driving Commercialisation of an Enabling Science II. https://doi.org/10.1117/12.2598780

The accurate control of magnetic fields is a cornerstone of multiple emerging quantum technologies. These technologies often require passive high permeability magnetic shielding and internal active field-generating coils to create their own bespoke m... Read More about Optimised hybrid shielding and magnetic field control for emerging quantum technologies.

Evidence of Nanoparticle Migration in Polymeric Hybrid Memristor Devices (2020)
Conference Proceeding
Jaafar, A. H., Gee, A., Hamza, A. O., Eling, C. J., Bouillard, J. S. G., Adawi, A. M., & Kemp, N. T. (2020). Evidence of Nanoparticle Migration in Polymeric Hybrid Memristor Devices. . https://doi.org/10.1109/ECCTD49232.2020.9218360

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.

The USNO-UKIRT K-band Hemisphere Survey (2018)
Conference Proceeding
Scott, D., Justice, B., Jeffrey A., M., Fred J., V., Bryan, D., Simon, D., …Guenther, H. (2018). The USNO-UKIRT K-band Hemisphere Survey. In American Astronomical Society, AAS Meeting #231

We present initial results from the United States Naval Observatory (USNO) and UKIRT K-band Hemisphere Survey (U2HS), currently underway using the Wide Field Camera (WFCAM) installed on UKIRT on Maunakea. U2HS is a collaborative effort undertaken by... Read More about The USNO-UKIRT K-band Hemisphere Survey.

Ice as a granular material (2016)
Conference Proceeding
Turnbull, B., Swift, M., & Hill, R. (2016). Ice as a granular material.

Ice is a unique material, fundamental to vital processes on earth, in the atmosphere [1] and as planets and comets form [2]. In this work, we introduce two experiments investigating ice as a granular material, to provide snippets of insight into thos... Read More about Ice as a granular material.

Photonic biosensor chip for early-stage cancer diagnosis (2015)
Conference Proceeding
Najeeb, N., Zhang, Y., Mellor, C. J., & Benson, T. M. (2015). Photonic biosensor chip for early-stage cancer diagnosis. In 2015 17th International Conference on Transparent Optical Networks (ICTON). https://doi.org/10.1109/ICTON.2015.7193316

This paper introduces a generic design of a silicon on silica “lab on a chip” photonic biosensor for medical diagnosis applications, and especially for early-stage cancer diagnosis. The sensitivity of detection of the biosensor developed is at least... Read More about Photonic biosensor chip for early-stage cancer diagnosis.

iSense: a technology platform for cold atom based quantum technologies (2014)
Conference Proceeding
Bongs, K., Malcolm, J., Ramelloo, C., Zhu, L., Boyer, V., Valenzuela, T., …Wicht, A. (2014). iSense: a technology platform for cold atom based quantum technologies. In Research in Optical Sciences. https://doi.org/10.1364/QIM.2014.QTu3B.1

A breakthrough in cold atom quantum technology is hindered by a bottleneck in the supporting technologies. We discuss a cold atom technology platform developed within the European iSense project, aiming at a gravimeter as demonstrator.

Circular polarization in n-type resonant tunneling diodes with Si delta-doping in the quantum well (2014)
Conference Proceeding
Herval, L. S., Galeti, H., Orsi Gordo, V., Galvao Gobato, Y., Brasil, M., Taylor, D., & Henini, M. (2014). Circular polarization in n-type resonant tunneling diodes with Si delta-doping in the quantum well. In 2014 29th Symposium on Microelectronics Technology and Devices (SBMicro). https://doi.org/10.1109/SBMicro.2014.6940126

In this work, we have investigated magneto-transport and polarization resolved photoluminescence of a GaAs/AlGaAs resonant tunneling diode with Si delta-doping at the center of the quantum well under a magnetic field parallel to the tunnel current. T... Read More about Circular polarization in n-type resonant tunneling diodes with Si delta-doping in the quantum well.

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