Tag: Biosensors

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Sensors

Ultra thin sensor measures pulse, scans fingerprints, vein patterns

University of Tokyo’s Takao Someya has developed a very thin sensor, worn around the finger or arm, which measures pulses and scans fingerprints and vein patterns, which can prevent identification errors in hospitals and nursing homes.

It consists of a thin film transistor and an optical sensor, based on Takao Someya, on a sheet, allowing simultaneous high-resolution imaging and high-speed data readouts.

The sensor will be refined to also measure blood sugar levels and blood oxygen content.

Join ApplySci next week at Wearable Tech + Digital Health + Neurotech Silicon Vally, where Zhenan Bao, Sheng Xu, Wei Gao and others will discuss the latest developments in chemical and electronic biosensors.

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Sensors

Joe Wang on next-generation biosensors

Joseph Wang is the SAIC Endowed Chair professor, Chairman of the NanoEngineering Department and Director of the Center for Wearable Sensors at University of California, San Diego, and Editor-in-chief of the journal Electroanalysis.

A prolific researcher with more than 1,200 papers and 100,000 citations, he recently developed an ultrasound patch to monitor blood pressure; self-propelled and targeted drug delivery; and continuous Levadopa monitoring for Parkinson’s management; amongst other full body, unobtrusive, advanced organic sensors for the next generation of healthcare.

Professor Wang described some of his groundbreaking work at the ApplySci conference at Harvard Medical School on November 14, 2019.

Click to view a video of his talk.

Join ApplySci at the 13th Wearable Tech + Digital Health + Neurotech Silicon Valley conference on February 11-12, 2020 at Quadrus Sand Hill Road.  Speakers include:  Zhenan Bao, Stanford – Vinod Khosla, Khosla Ventures – Mark Chevillet, Facebook – Shahin Farshchi, Lux Capital – Carla Pugh, Stanford – Nathan Intrator, Tel Aviv University | Neurosteer – Wei Gao, Caltech – Sergiu Pasca, Stanford – Walter Greenleaf, Stanford – Sheng Xu, UC San Diego – Dror Ben-Zeev, University of Washington – Mikael Eliasson, Roche  – Unity Stoakes, StartUp Health – Garth Smith and a delegation of startups from the Ontario Brain Institute

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Featured Sensors

Stretchable, degradable semiconductors for health monitoring

Zhenan Bao has developed stretchable, degradable semiconductors, with the ability to conform to internal organ surfaces, and dissolve and disappear when no longer needed.

This is the first example of a material that simultaneously possesses the three qualities of semiconductivity, intrinsic stretchability and full degradability. Other attempts resulted in semiconductors that either did not break down completely, or had reduced electrical performance when stretched.

Zhenan Bao has solved this problem – by combining a rubbery organic polymer with a semiconducting one.

Her team synthesized and mixed the two degradable polymers, which self-assembled into semiconducting nanofibers embedded in an elastic matrix. Thin films made of these fibers could be stretched to twice their normal length without cracking or compromising electrical performance. When placed in a weak acid, the new material degraded completely within 10 days.   (Bao said that it would take much longer in the human body.) The semiconductor was  non-toxic to human cells growing on the material in a petri dish.

Zhenan Bao will discuss this technology, and more of her latest work, at Wearable Tech + Digital Health + Neurotech Silicon Valley on Feb 11-12