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

CTRL-Labs acquired by Facebook for 500M – 1B

Congratulations to CTRL-Labs and Lux Capital on Facebook’s acquisition of the four year old Neurotech startup. The company, whose technology assists in decoding brain activity and intention, will join Facebook’s AR/VR team.

CTRL-Labs participated in a recent ApplySci panel of startups at Stanford led by Lux Capital’s Shahin Farshchi. Facebook presented its Brain Computer Interface work at the ApplySci conference at the MIT Media Lab in 2017.

ApplySci’s next conference, at Harvard Medical School, will take place on November 14, 2019. It will again include a panel of startups — perhaps the next unicorns — and a series of talks by leading brain and body health scientists.

I hope that you’ll join us.


Join ApplySci at the 12th Wearable Tech + Digital Health + Neurotech Boston conference on November 14, 2019 at Harvard Medical School featuring talks by Brad Ringeisen, DARPA – Joe Wang, UCSD – Carlos Pena, FDA  – George Church, Harvard – Diane Chan, MIT – Giovanni Traverso, Harvard | Brigham & Womens – Anupam Goel, UnitedHealthcare  – Nathan Intrator, Tel Aviv University | Neurosteer – Arto Nurmikko, Brown – Constance Lehman, Harvard | MGH – Mikael Eliasson, Roche – Nicola Neretti – Brown