News

We welcome our new group members, Chris Carter and Mike Gater, who are both starting PhDs and Craig Venables, who will be doing an MSc (by research). All three will be working on developing new types of optical switching memristors for neuormorphic computing applications. Best of luck in your research!

——————————————————————————————————

Congratulations to Dr Ayoub Jaafar and Dr Alex Gee who having finished their PhD’s and have both secured postdoc positions at the University of Southampton and the University of Oxford, respectively. Well done to you both, it is very well deserved!

——————————————————————————————————

Look out for our new book chapter “Optical Memristors: Review of Switching Mechanisms and New Computing Paradigms” Alex Gee, Ayoub H. Jaafar, Neil T. Kemp, which will be coming out soon.

——————————————————————————————————

Single Molecule SCO Switch

Our new article on a single spin crossover (SCO) molecule device is published in the Journal of Physical Chemistry (see “Multilevel Resistance Switching and Enhanced Spin Transition Temperature in Single and Double Molecule Spin Crossover Nanogap Devices“)

This work demonstrates spin-state dependent conductance switching in a unique, single-molecule spin crossover (SCO) device in which the SCO molecule is specifically tailored for surface deposition. In contrast to previously published work this paper uniquely demonstrates a temperature dependence of the switching mechanism. We also demonstrate an enhanced spin transition temperature compared to the bulk SCO material and multilevel resistance switching, signifying the presence of two SCO molecules across the junction. Behaviour such as this, when controllable, could facilitate multi-level resistance switching and the development of ultra-small (single molecule) memory devices having more than two binary states.

——————————————————————————————————

Dr Neil Kemp becomes a member of the Chua Memristor Centre (Dresden) – see https://cmc-dresden.org/members/neil-kemp/

——————————————————————————————————

Optalysys

New project commencing soon with Optalysys investigating the incorporation of optical memristors in Optical AI chips.

——————————————————————————————————

benzenethiol

Exciting work by PhD student Alex Gee published in Nanotechnology detailing how to make “Nanoscale Junctions for Single Molecule Electronics Fabricated using Bilayer Nanoimprint Lithography combined with Feedback Controlled Electromigration”.

The paper then uses the approach to make  a high conductance molecular bridge formed with 2 benzenethiol molecules.

(see doi.org/10.1088/1361-6528/ab6473)

——————————————————————————————————

tud_logo_og

Dr Kemp is awarded a senior visiting research fellowship to Technische Universität Dresden (Germany).

——————————————————————————————————

Fig2_ZnO_NP_NR

New publication in IEEE Transaction on Nanotechnology. This work compares the different switching mechanisms in devices made with the same materials but having different nanostructure geometries. The article is entitled “Nanorods vs 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

(see DOI: 10.1109/TNANO.2019.2949759)

——————————————————————————————————

Stephen Wilkinson joins the team to work on the development of a new type of capacitive nanogap biosensor for the detection of hormones in rivers and streams.

——————————————————————————————————

enertek-international-logo

New project working with Enertek International developing new types of Hydrogen Burners and Safety Devices.

——————————————————————————————————

Colloborative work with Dr Jia Min Chin and Dr Michael R. Reithofer on “Dynamic Electric Field Alignment of Metal–Organic Framework Microrods” results in a publication in the  Journal of the American Chemical Society.

——————————————————————————————————

GrapheneOx_Dev

New publication in Carbon (IF 7.5) reporting on the first optically tuneable memristor device made with graphene oxide. The work importantly demonstrates both reversible and irreversible optical switching effects depending on whether the light is in the visible or UV electromagnetic spectrum. (read article here )

——————————————————————————————————

Nanowerk spotlight article on our Optical Memristor Research:

Nanowerk2_cropped

Learning in artificial synapses tuned by light

——————————————————————————————————

filamentary_deviceOur latest work on the development of Optical Memristors for Light-Tuneable Synaptic Learning has been published in Advanced Electronic Materials. In this work we demonstrate very large optical switching between two resistive memory states.

 (see DOI:10.1002/aelm.201900197)

——————————————————————————————————

label-free nanogap biosensor2Our recent work on the development of a label-free nanogap capacitive biosensor has been published in PCCP. In this work we take advantage of a very small distance between metal electrodes to eliminate electrode polarization effects that normally produce very large parasitic capacitance.

(see DOI:10.1039/C8CP05510F).

——————————————————————————————————

Optical_memristorTOC1a  Optical_memristorTOC2a

Our recent work on reversible optical switching memristors with tunable STDP synaptic plasticity has been published in the journal Nanoscale.

Paper: http://pubs.rsc.org/en/content/articlepdf/2017/NR/C7NR06138B

The article has also received the following media attention.

News Article: https://www.nanowerk.com/spotlight/spotid=48464.php

——————————————————————————————————

%d bloggers like this:
search previous next tag category expand menu location phone mail time cart zoom edit close