The use of neural implants for stimulation and recording show excellent promise in restoring certain functions to the central nervous system; and neuroprostheses remain one of the most important tools of neuroscientists for the elucidation of the brains function. Ailments such as Parkinsons disease, obesity, blindness, or epilepsy are being studied from this angle. Development of better electrodes for recording and stimulation is therefore critical to ensure continuing progress in this field. This book addresses one of the main clinical complications of the use of electrodes, namely the reaction of the neurological tissue in the immediate vicinity of implanted devices. The authors describe new techniques for the assessment of this phenomenon, as well as new microfabrication techniques that impede the inflammatory response of the brain that tends to limit the lifetime and reduce the effectiveness of these devices. The measurement protocols and improved fabrication protocols described will become standard tools in the future of neuroprostheses.
Introduction Scientific and clinical context Problem statement: the tissue reaction to implanted neuroprostheses Review of past research Technology position with respect to state of the art Research objectives Limitations Structure of the book - Microfabrication Techniques for Neuroprostheses Microelectrode arrays Microfluidic channels Neural Recording and Stimulation The Neurophysiological basis of recording The neurophysiological basis of stimulation Applications of neural recording Applications of neural stimulation In vivo Electrical Impedance Spectroscopy Materials and methods Results Discussion -Controlled Release Drug Coatings Materials and methods Results Discussion Conclusion - Summary of main results Significance Future Perspectives References Index
Photovoltaic technology has now developed to the extent that it is close to fulfilling the vision of a solar-energy world, as devices based on this technology are becoming efficient, low-cost and durable. This book provides a comprehensive treatment of thin-film silicon, the most prevalent PV material, in terms of its semiconductor nature, starting out with the physical properties, but concentrating on device applications.
The dye-sensitized solar cell (DSC) is a photovoltaic converter that mimics natural photosynthesis. Like green plants and algae it uses a molecular absorber, the dye, to harvest sunlight and generate electric charges.
Cellulose is the worlds most common biopolymer, and as such will play a growing role as our society confronts the problems of climate change and declining stocks of fossil fuels.