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Melbourne scientists develop 'electronic skin'

Melbourne scientists develop 'electronic skin'

The application of metallic biomedical sensors could revolutionise wearable technology in the health sector

Source: Professor Wenlong Cheng, CeBit eHealth presentation

Source: Professor Wenlong Cheng, CeBit eHealth presentation

Melbourne researchers have developed a new form of wearable technology that can become part of the body, forming a metallic artificial skin.

The technology, which involves the use of biomedical sensors, was developed by scientists in the NanoBiotics lab at Monash University, for the purpose of monitoring patient health.

Made from an incredibly thin gold thread, ten times smaller than a human hair follicle, the new wearable technology concept could be used to monitor body motion, heartbeat, and blood pressure.

According to head researcher, Professor Wenlong Cheng, the soft electronic skin (or e-skin) can offer applications that are difficult to achieve with rigid conventional wafer and planar circuit board technologies due to its unique capacity to integrate with soft materials and curvilinear surfaces.

Professor Wenlong Cheng
Professor Wenlong Cheng

“One core challenge [for wearable technology] is that Mother Nature doesn’t provide viable materials allowing for the design of soft electronics,” he said.

During his presentation at CeBit’s eHealth conference in Sydney, Professor Cheng said the dilemma is that the traditional inorganic or organic materials often cannot meet this requirement.

“Rigid and/or crystallised inorganic materials usually have good optoelectronic properties, controllability and stability but their mechanical compliance is generally poor. Meanwhile, soft organic materials often show excellent mechanical flexibility and robustness but poor optoelectronic properties, so we need new eMaterials design rules.”

The ultra-thin piezoresistive materials can withstand 600 per cent strain, resulting in a highly stretchy and durable wearable biomedical sensor for real-time health monitoring.

Professor Cheng also noted the fabrication of the technology requires very little cost, is environmentally sustainable, and doesn’t require access to a clean room environment.

The Monash team have been developing various projects on the back of this technology, including the optimisation of an “e-skin NanoPatch” wearable heart health monitoring device, with trial data being collected in a clinical setting. The project has involved collaboration among nanotechnology specialists, electrical engineers, industrial designers and clinicians specialising in cardiac research.

“This form of sustainable nanofabrication will be a key component in future wearable electronics with broad applications ranging from electronic skins, intelligent human/machine interactions, soft robotics, and energy harvesting,” said Professor Cheng.

“With its characteristics of high-value, high knowledge content, low carbon footprint in its manufacturing process, [e-skin] is well positioned within the evolving Australian MedTech industry to bring significant economic opportunities.”

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Tags cebitnanoscienceInternet of Thingsbiomedical sensorsWearable technologyNanoBioticssensorsMonash University

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