̽��ֱ�� of Cambridge - Ministry of Science and Technology of China

Cambridge and Nanjing break ground on 'smart cities' Centre

plc32 — Tue, 10 Sep 2019 04:03:44 +0000

Cambridge Vice-Chancellor Professor Stephen J Toope joined Zhang Jinghua, Party Secretary of Nanjing City Party Committee and Nanjing Deputy Mayor Jiang Yuejian to turn the first soil at the site where the Centre's dedicated building will rise in Nanjing's Jiangbei New Area.

̽��ֱ��Cambridge ̽��ֱ��-Nanjing Centre of Technology and Innovation will establish a home for joint research and innovation in collaboration with the Chinese government, industry and China's global research universities that is dedicated to the future of creating 'smart' cities.

"Here in Nanjing, an ancient city and former imperial capital, we are embarking on a unique enterprise," Vice-Chancellor Toope said at the groundbreaking ceremony. " ̽��ֱ��innovations emerging from this Centre will enable the development of 'smart' cities in which sensors can enable sustainable lifestyles, improve healthcare, limit pollution and make efficient use of energy."

Cambridge and its Chinese partners will share revenue derived from the commercialisation of Intellectual Property (IP) developed at the Centre. It is the ̽��ֱ��’s first overseas enterprise at this scale.

Funded by the Nanjing Municipality for its first five years, the project will have its own dedicated building as a pilot urban development based on high levels of technological innovation.

At the heart of the new Centre’s activities will be research into technologies that support a modern 21st century city with integrated IT, health care and building management. Innovations emerging from the Centre will enable the development of 'smart' cities in which sensors – applied at the individual level and all the way through to the level of large infrastructure – will enable sustainable lifestyles.

As well as supporting health and wellbeing in new cities, the new Centre will help deliver efficient energy use through its academic and entrepreneurial activities.

̽��ֱ��agreement between Cambridge and Nanjing will fund positions in Nanjing, both academic and management, and will allow Cambridge-based academics to engage with specific, long-term projects in Nanjing. It will also support the establishment of a professorship, based in Cambridge, with responsibility as the Centre’s Academic Director.

̽��ֱ��project has been driven by Cambridge’s Department of Engineering, although it is hoped that there will be opportunities to widen participation to other departments and Schools. IP generated by research funded through the Centre will be licensed for commercialisation by Cambridge ̽��ֱ��’s innovation branch, Cambridge Enterprise.

̽��ֱ��Centre will seek to demonstrate the power of collaboration with China’s universities, industry, government and other partners to conduct the kind of academic research of excellence today that will make life better for the city dwellers of tomorrow.

One of the two initial projects already approved is to create a high resolution scanner that can provide a low-cost easily accessible method for examining difficult areas of the body, such as bent spines, without using large and expensive CT scans.

That project will be led by Cambridge Engineering Department Professor Richard Prager, in collaboration with China's Southeast ̽��ֱ�� and established local ultrasonic manufacturer Vinno.

A second identified project led by Principal Investigator Professor Toni Vidal-Puig from Cambridge’s Clinical Biochemistry Department, will study the associated complications of increased obesity in China.

Both themes are closely linked to the focus area of local partner, NIHA (Nanjing International Healthcare Area).

̽��ֱ��Vice-Chancellor was joined at the groundbreaking ceremony by representatives from partners Nanjing ̽��ֱ��, Southeast ̽��ֱ��, Peking ̽��ֱ��. Tsinghua ̽��ֱ��, Fudan ̽��ֱ�� and Zheijiang ̽��ֱ�� as well as the Academic Director of Cambridge ̽��ֱ��-Nanjing Centre, Professor Daping Chu of Cambridge's Electrical Engineering Department, and Pro-Vice-Chancellor for International Relations Eilis Ferran.

̽��ֱ�� ̽��ֱ�� of Cambridge and the Nanjing Municipal Government have broken ground on the Cambridge ̽��ֱ��-Nanjing Centre of Technology and Innovation.

Here in Nanjing, an ancient city and former imperial capital, we are embarking on a unique enterprise.

Vice-Chancellor Stephen J Toope

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Environmentally-friendly graphene textiles could enable wearable electronics

Anonymous — Fri, 25 Nov 2016 00:23:01 +0000

Wearable, textiles-based electronics present new possibilities for flexible circuits, healthcare and environment monitoring, energy conversion, and many others. Now, researchers at the Cambridge Graphene Centre (CGC) at the ̽��ֱ�� of Cambridge, working in collaboration with scientists at Jiangnan ̽��ֱ��, China, have devised a method for depositing graphene-based inks onto cotton to produce a conductive textile. ̽��ֱ��work, published in the journal Carbon, demonstrates a wearable motion sensor based on the conductive cotton.

Cotton fabric is among the most widespread for use in clothing and textiles, as it is breathable and comfortable to wear, as well as being durable to washing. These properties also make it an excellent choice for textile electronics. A new process, developed by Dr Felice Torrisi at the CGC, and his collaborators, is a low-cost, sustainable and environmentally-friendly method for making conductive cotton textiles by impregnating them with a graphene-based conductive ink.

Based on Dr Torrisi’s work on the formulation of printable graphene inks for flexible electronics, the team created inks of chemically modified graphene flakes that are more adhesive to cotton fibres than unmodified graphene. Heat treatment after depositing the ink on the fabric improves the conductivity of the modified graphene. ̽��ֱ��adhesion of the modified graphene to the cotton fibre is similar to the way cotton holds coloured dyes, and allows the fabric to remain conductive after several washes.

Although numerous researchers around the world have developed wearable sensors, most of the current wearable technologies rely on rigid electronic components mounted on flexible materials such as plastic films or textiles. These offer limited compatibility with the skin in many circumstances, are damaged when washed and are uncomfortable to wear because they are not breathable.

“Other conductive inks are made from precious metals such as silver, which makes them very expensive to produce and not sustainable, whereas graphene is both cheap, environmentally-friendly, and chemically compatible with cotton,” explains Dr Torrisi.

Co-author Professor Chaoxia Wang of Jiangnan ̽��ֱ�� adds: “This method will allow us to put electronic systems directly into clothes. It’s an incredible enabling technology for smart textiles.”

Electron microscopy image of a conductive graphene/cotton fabric. Credit: Jiesheng Ren

̽��ֱ��work done by Dr Torrisi and Prof Wang, together with students Tian Carey and Jiesheng Ren, opens a number of commercial opportunities for graphene-based inks, ranging from personal health technology, high-performance sportswear, military garments, wearable technology/computing and fashion.

“Turning cotton fibres into functional electronic components can open to an entirely new set of applications from healthcare and wellbeing to the Internet of Things,” says Dr Torrisi “Thanks to nanotechnology, in the future our clothes could incorporate these textile-based electronics and become interactive.”

Graphene is carbon in the form of single-atom-thick membranes, and is highly conductive. ̽��ֱ��group’s work is based on the dispersion of tiny graphene sheets, each less than one nanometre thick, in a water-based dispersion. ̽��ֱ��individual graphene sheets in suspension are chemically modified to adhere well to the cotton fibres during printing and deposition on the fabric, leading to a thin and uniform conducting network of many graphene sheets. This network of nanometre flakes is the secret to the high sensitivity to strain induced by motion. A simple graphene-coated smart cotton textile used as a wearable strain sensor has been shown to reliably detect up to 500 motion cycles, even after more than 10 washing cycles in normal washing machine.

̽��ֱ��use of graphene and other related 2D materials (GRMs) inks to create electronic components and devices integrated into fabrics and innovative textiles is at the centre of new technical advances in the smart textiles industry. Dr Torrisi and colleagues at the CGC are also involved in the Graphene Flagship, an EC-funded, pan-European project dedicated to bringing graphene and GRM technologies to commercial applications.

Graphene and GRMs are changing the science and technology landscape with attractive physical properties for electronics, photonics, sensing, catalysis and energy storage. Graphene’s atomic thickness and excellent electrical and mechanical properties give excellent advantages, allowing deposition of extremely thin, flexible and conductive films on surfaces and – with this new method – also on textiles. This combined with the environmental compatibility of graphene and its strong adhesion to cotton make the graphene-cotton strain sensor ideal for wearable applications.

̽��ֱ��research was supported by grants from the European Research Council’s Synergy Grant, the International Research Fellowship of the National Natural Science Foundation of China and the Ministry of Science and Technology of China. ̽��ֱ��technology is being commercialised by Cambridge Enterprise, the ̽��ֱ��’s commercialisation arm.

Reference
Ren, J. et al. Environmentally-friendly conductive cotton fabric as flexible strain sensor based on hot press reduced graphene oxide. Carbon; 19 Oct 2016; DOI: 10.1016/j.carbon.2016.10.045

A new method for producing conductive cotton fabrics using graphene-based inks opens up new possibilities for flexible and wearable electronics, without the use of expensive and toxic processing steps.

Turning cotton fibres into functional electronic components can open to an entirely new set of applications from healthcare and wellbeing to the Internet of Things

Felice Torrisi

Jiesheng Ren

̽��ֱ��text in this work is licensed under a Creative Commons Attribution 4.0 International License. For image use please see separate credits above.

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