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Ultraminiaturized photovoltaic and radio frequency powered optoelectronic systems for wireless optogenetics.
- Source :
-
Journal of neural engineering [J Neural Eng] 2015 Oct; Vol. 12 (5), pp. 056002-56002. Date of Electronic Publication: 2015 Jul 20. - Publication Year :
- 2015
-
Abstract
- Objective: Wireless control and power harvesting systems that operate injectable, cellular-scale optoelectronic components provide important demonstrated capabilities in neuromodulatory techniques such as optogenetics. Here, we report a radio frequency (RF) control/harvesting device that offers dramatically reduced size, decreased weight and improved efficiency compared to previously reported technologies. Combined use of this platform with ultrathin, multijunction, high efficiency solar cells allows for hundred-fold reduction of transmitted RF power, which greatly enhances the wireless coverage.<br />Approach: Fabrication involves separate construction of the harvester and the injectable µ-ILEDs. To test whether the presence of the implantable device alters behavior, we implanted one group of wild type mice and compared sociability behavior to unaltered controls. Social interaction experiments followed protocols defined by Silverman et al. with minor modifications.<br />Main Results: The results presented here demonstrate that miniaturized RF harvesters, and RF control strategies with photovoltaic harvesters can, when combined with injectable µ-ILEDs, offer versatile capabilities in optogenetics. Experimental and modeling studies establish a range of effective operating conditions for these two approaches. Optogenetics studies with social groups of mice demonstrate the utility of these systems.<br />Significance: The addition of miniaturized, high performance photovoltaic cells significantly expands the operating range and reduces the required RF power. The platform can offer capabilities to modulate signaling path in the brain region of freely-behaving animals. These suggest its potential for widespread use in neuroscience.
- Subjects :
- Animals
Brain physiology
Computer-Aided Design
Energy Transfer
Equipment Design
Equipment Failure Analysis
Light
Male
Mice
Mice, Inbred C57BL
Miniaturization
Radio Waves
Electric Power Supplies
Lighting instrumentation
Optogenetics instrumentation
Photic Stimulation instrumentation
Semiconductors
Wireless Technology instrumentation
Subjects
Details
- Language :
- English
- ISSN :
- 1741-2552
- Volume :
- 12
- Issue :
- 5
- Database :
- MEDLINE
- Journal :
- Journal of neural engineering
- Publication Type :
- Academic Journal
- Accession number :
- 26193450
- Full Text :
- https://doi.org/10.1088/1741-2560/12/5/056002