Chalcogenide glass-on-graphene

2d-material integration enabled by direct deposition of chalcogenide glass onto graphene is detailed in our latest Nature publication, in collaboration with MIT   The deposited chalcogenides can be directly pattered on a variety of 2D materials to simultaneously act as  passive light guides, active gates and protect the 2D material without the transfer processes previously used.

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On-chip photonic synapse

A new paper published 27 September 2017 by ChAMP partners from Oxford and Exeter continues the search for new “neuromorphic computing” architectures that mimic the brain’s approach to simultaneous processing and storage of information is intense.


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Optical, Thermal, and Mechanical Characterization of Ga2Se3-Added GLS Glass published in Advanced Materials.

Video abstract of our latest publication in Advanced Materials Jul 6, 2017

The results of the addition of Se to gallium lanthanum sulphide (GLS) glass through the substitution of Ga2S3 by Ga2Se3 are described. An innovative open melting apparatus is used. The addition of selenium to GLS glass generally results in a lower glass transition temperature and an extended transmission

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Structural modification of GaLaS glass for a new family of chalcogenides

Andrea Ravagli presents the latest on ChAMP chalcogenide glass development at SPIE Secuirty and Defence in Anaheim on April 11 2017. Including new CTE, Tg and hardness measurements for up to 60% Ga2Se2 glass and the impact of Indium and Tellurium doping on infrared absorption.

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Material optimisation

The ternary compositional map of the electrical resistance contrast associated with the amorphous (as deposited) to crystalline (at 300C) phase transition for a GeSbTe thin film library

Optimisation of material composition for individual applications is a core part of ChAMP. This is achieved through partnership with the Advanced Composite Materials Facility (ACMF) at the University of Southampton headed by Prof. Brian Hayden and housed in the department of Chemistry. Continue reading

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Transmission of extended transmission GLS

Transmission of eGLS glass

Transmission of eGLS glass

The enhanced infrared performance of a new modified Gallium Lanthium Sulphide (GLS) chalcogenide glass family is illustrated in this transmission curve.  Details of the modification and the range transmission achieved are in Dan Hewak’s latest presentation.

The strong bonding and high glass transition temperature that characterise GLS glasses are maintained in this formulation and are anticipated to yield the enhanced mechanical, thermal and chemical durability seen in previous GLS glasses relative to other chalcogenide glasses. Further improvement of the loss in the infrared band and extended characterisation is anticipated in the coming months.

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New Chalcogenide coating collaboration

Building on ChAMP, the Optoelectronics Research Centre (ORC) and Plasma App Ltd are collaborating in a one-year £150k feasibility study exploring novel thin film coating technology and applications for Gallium Lanthanum Sulphide (GLS) Chalcogenide glass

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