M | T | W | T | F | S | S |
---|---|---|---|---|---|---|
« Sep | ||||||
1 | 2 | |||||
3 | 4 | 5 | 6 | 7 | 8 | 9 |
10 | 11 | 12 | 13 | 14 | 15 | 16 |
17 | 18 | 19 | 20 | 21 | 22 | 23 |
24 | 25 | 26 | 27 | 28 | 29 | 30 |
31 |
- 20/10/2011: Possible functions of consciousness 1 - leading edge of memory
- 17/10/2011: Prediction of smells
- 14/10/2011: Neuro-feedback
- 01/10/2011: A glimpse into the future
- 28/09/2011: Not exactly mind-reading
- 25/09/2011: Interesting description
- 22/09/2011: Learning to see events
- 19/09/2011: Here we go again
- 16/09/2011: The mind's touch
- 13/09/2011: Buddhism and neuroscience
- October 2011
- September 2011
- August 2011
- July 2011
- June 2011
- May 2011
- April 2011
- March 2011
- February 2011
- January 2011
- December 2010
- November 2010
- October 2010
- September 2010
- August 2010
- July 2010
- June 2010
- May 2010
- April 2010
- March 2010
- February 2010
- January 2010
- December 2009
- November 2009
- October 2009
- September 2009
- August 2009
- July 2009
- June 2009
- May 2009
- April 2009
- March 2009
- February 2009
- January 2009
- December 2008
- November 2008
- October 2008
- September 2008
- August 2008
- July 2008
- June 2008
A glimpse into the future
There is news of a development that may change the world, for the better I hope but I also fear its disuse. Chao Zhong and others have made a device that can communicate between conventional electronic devices and biological systems. In place of silicon, it uses a modified form of the polymer that is used in the exoskeletons of insects other invertebrates, hydrated maleic-chitosan. Rather than a flow of electrons, it uses a flow of protons (hydrogen ions). It therefore fits with the nature of biological electrical signals. Such a device could give birth to a whole new branch of medicine.
Here is the abstract:
Chao Zhong, et al., A polysaccharide bioprotonic field-effect transistor, Nature Communications, 2011
In nature, electrical signalling occurs with ions and protons, rather than electrons. Artificial devices that can control and monitor ionic and protonic currents are thus an ideal means for interfacing with biological systems. Here we report the first demonstration of a biopolymer protonic field-effect transistor with proton-transparent PdHx contacts. In maleic-chitosan nanofibres, the flow of protonic current is turned on or off by an electrostatic potential applied to a gate electrode. The protons move along the hydrated maleic–chitosan hydrogen-bond network with a mobility of ~4.9×10−3 cm2 V−1 s−1. This study introduces a new class of biocompatible solid-state devices, which can control and monitor the flow of protonic current. This represents a step towards bionanoprotonics.