Category Physics

A Conductive Self-Healing Hydrogel to Create Flexible Sensors

A conductive self-healing hydrogel to create flexible sensors
(a) Schematic diagram of self-healing mechanism of hydrogel; (b) self-healing rates 243 of hydrogel at different times; (c)Self-healing demonstration process of hydrogel; (d) 244 Self-healing effect of multiple healing with hydrogel. Credit: Wang et al.

Recent advancements in the field of electronics have enabled the creation of smaller and increasingly sophisticated devices, including wearable technologies, biosensors, medical implants, and soft robots. Most of these technologies are based on stretchy materials with electronic properties.

While material scientists have already introduced a wide range of flexible materials that could be used to create electronics, many of these materials are fragile and can be easily damaged...

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Researchers developing Smart Ring for Healthcare and Extended Reality

Researchers developing smart ring for healthcare and extended reality
The OmniRing doesn’t have a display and so can support a longer battery life. This makes it possible to wear the ring all the time, including while sleeping and swimming, enabling the ring to capture deeper and more intimate levels of sensing information.  Credit: Taiting Lu

A team of researchers in the Penn State School of Electrical Engineering and Computer Science aims to enable health care and extended reality—which encompasses virtual, augmented and mixed reality—with their smart sensing ring, OmniRing.

The ring uses both inertial measurement unit (IMU) sensors, which can capture location, speed and rotation of the fingers, and photoplethysmography (PPG) sensors, which utilize an infrared light to measure volumetric changes in blood circulation...

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Team sets New Speed Record for Industry Standard Optical Fiber

The world's fastest industry standard optical fibre
Table of fibers. Credit: Macquarie University

An optical fiber about the thickness of a human hair can now carry the equivalent of more than 10 million fast home internet connections running at full capacity.

A team of Japanese, Australian, Dutch, and Italian researchers has set a new speed record for an industry standard optical fiber, achieving 1.7 Petabits over a 67km length of fiber. The fiber, which contains 19 cores that can each carry a signal, meets the global standards for fiber size, ensuring that it can be adopted without massive infrastructure change. And it uses less digital processing, greatly reducing the power required per bit transmitted.

Macquarie University researchers supported the invention by developing a 3D laser-printed glass chip that allows low loss acce...

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‘You can 3D print one material through another, as if it were invisible’: New 3D printing technique

'You can 3D print one material through another, as if it were invisible': new 3D printing technique ready to advance man
Dr Jose Marques-Hueso from the Institute of Sensors, Signals & Systems at Heriot-Watt University. Credit: Heriot-Watt University

Scientists have developed an advanced technique for 3D printing that is set to revolutionize the manufacturing industry.

The group, led by Dr. Jose Marques-Hueso from the Institute of Sensors, Signals & Systems at Heriot-Watt University in Edinburgh, has created a new method of 3D printing that uses near-infrared (NIR) light to create complex structures containing multiple materials and colors.

They achieved this by modifying a well-established 3D printing process known as stereolithography to push the boundaries of multi-material integration...

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