In the last several years we have developed a novel class of micro electrodes for neuronal recording and stimulation. The electrodes are fabricated by synthesizing high density carbon nanotube islands on lithographically defined, passivated titanium nitride conductors on a silicon dioxide substrate.  
Recently, we have also developed a flexible version of these electrodes. The enhanced electrochemical properties of the electrodes, their flexible and simple micro-fabrication preparation procedure as well as their bio-compatibility and durability suggest that carbon nanotube electrodes are a promising platform for high resolution neuronal coupling. These electrodes are currently explored primarily for surface EMG and EEG applications.
One to one neuron-electrode interfacing
Alon Greenbaum, Sarit Anava, Amir Ayali, Mark Shein, Moshe David-Pur, Eshel Ben-Jacob and Yael Hanein
Journal of Neuroscience methods, 2009.
Carbon nanotube electrodes for effective interfacing with retinal tissue
Asaf Shoval, Christopher Adams, Moshe David-Pur, Mark Shein, Yael Hanein and Evelyne Sernagor, Frontiers in NeuroEngineering, 2009, Full text: html
All-carbon-nanotube flexible neuronal electrodes 
Moshe David-Pur, Mark Shein, Lilach Bareket, Giora Beit-Ya’akov, Nizan Herzog, Yael Hanein,
Biomed Microdevices, DOI 10.1007/s10544-013-9804-6, 2013. Full Text: Link.