Nanotechnology Now - Press Release: The Physics Department of Imperial College, London, uses the Quorum Q150T to deposit metals and ITO to make plasmonic sensors and electric contact pads

Home > Press > The Physics Department of Imperial College, London, uses the Quorum Q150T to deposit metals and ITO to make plasmonic sensors and electric contact pads

Schematic from the abstract of the Braun & Maier paper published in ACS Sensors (referenced above). (Published here with the permission of the author, Dr Braun)

Abstract:
Quorum Technologies, market and technology leaders in electron microscopy coating and cryogenic preparation products, talk about how the Blackett Laboratory of the Physics Department at Imperial College chose the Q150T coater to deposit metals to make plasmonic devices in a fast prototyping and development process.

The Physics Department of Imperial College, London, uses the Quorum Q150T to deposit metals and ITO to make plasmonic sensors and electric contact pads

Laughton, UK | Posted on July 13th, 2017

Dr Avi Braun is a Research Associate in the Faculty of Natural Sciences, Department of Physics at Imperial College, London. Located in the Blackett Laboratory, Dr Braun joined the Quantum photovoltaic group in December 2013 as an Imperial College Junior Research Fellow. His main subject of research is the harnessing and integration of nano-photonic structures with photovoltaic and other opto-electronic and sensing applications. This research involves the design, simulation, fabrication and characterization of miniaturized opto-electronic devices and plasmonic sensors.

Dr Braun uses the Quorum Technologies Q150T coater to deposit a variety of metals and ITO (indium-tin oxide) to make plasmonic sensors and electric contact pads. Describing what he particularly likes about the Q150, Dr Braun says “In comparison with more sophisticated high vacuum systems, the Q150T is much faster thus allowing us to have a fast prototyping and development process. It is also very simple to use; this enables us to give students access to the system as part of their academic practical training. The metals we use include gold, silver, ITO and a nickel-copper alloy. These we deposit in a thickness range of 50-150 nm. We also put down adhesion layers of chromium and titanium to a thickness of 3-5 µm. We particularly like the way we are able to change targets – fast and simple. We also find the angled rotational stage very good for coating 3D structures.”

Dr Braun and his colleague, Professor Stefan Maier, have published work in ACS Sensors. It describes the fabrication of plasmonic IR sensors using direct laser writing and metal deposition using the Q150T system. Entitled “Versatile direct laser writing lithography technique for surface enhanced infrared spectroscopy sensors”, the paper is available online through the American Chemical Society at ACS Sens., 2016, 1 (9), pp 1155–1162, OID: 10.1021/acssensors.6b00469.

To obtain full details of the Q150T coating system and other products available from Quorum Technologies, please visit www.quorumtech.com .

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About Quorum Technologies
Quorum Technologies are market and technology leaders in electron microscopy (EM) coating and cryogenic preparation providing high performance sample preparation instrumentation worldwide.

A key feature of Quorum's success is by listening to the industry and being able to respond to requests and requirements to develop new instruments and techniques. This resulted in the introduction of the market-leading Q Series of vacuum coaters and PP3010T cryo preparation system for SEM and FIB/SEM – genuine ground-up redesigns that have earned Quorum the respect of the industry and truly set the standard within the specimen preparation field.

The company was founded in 2001 after the acquisition of the long-established Polaron brand and its range of EM products from Thermo Instruments. In 2005, they acquired the Emitech company, allowing Quorum to extend their product range and further grow the business.

Further impetus and investment came with the acquisition of Quorum by Judges Scientific plc and a move to purpose-built factory and offices close to the South Downs National Park at Laughton, East Sussex in the South East of England.

In 2014 Quorum were proud winners of the Queen's Award for Enterprise for International Trade.

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