We present approaches for using thin film polymeric electrode arrays for use in applications of minimally invasive neurological monitoring. The flexibility and unique surface properties of the thin-film polyimide substrate in combination with a compact device platform make them amenable to a variety of surgical implantation procedures. Using a rapid-prototyping and fabrication technique, arrays of various geometries can be fabricated within a week. In this paper we test two different approaches for deploying electrode arrays through small cranial openings.
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http://dx.doi.org/10.1109/IEMBS.2009.5333177 | DOI Listing |
ACS Nano
January 2025
School of Mechanical and Manufacturing Engineering, University of New South Wales, Sydney, New South Wales 2052, Australia.
Implantable systems with chronic stability, high sensing performance, and extensive spatial-temporal resolution are a growing focus for monitoring and treating several diseases such as epilepsy, Parkinson's disease, chronic pain, and cardiac arrhythmias. These systems demand exceptional bendability, scalable size, durable electrode materials, and well-encapsulated metal interconnects. However, existing chronic implantable bioelectronic systems largely rely on materials prone to corrosion in biofluids, such as silicon nanomembranes or metals.
View Article and Find Full Text PDFLab Chip
January 2025
Department of Nano Science and Technology, Sungkyunkwan University, Suwon, Gyeonggi-do 16419, Republic of Korea.
Electrochemical impedance spectroscopy (EIS) serves as a non-invasive technique for assessing cell status, while mechanical stretching plays a pivotal role in stimulating cells to emulate their natural environment. Integrating these two domains enables the concurrent application of mechanical stimulation and EIS in a stretchable cell culture system. However, challenges arise from the difficulty in creating a durable and stable stretchable impedance electrode array.
View Article and Find Full Text PDFAlzheimers Dement
December 2024
Univ. Lille, Inserm, CHU Lille, Institut Pasteur de Lille, U1167-RID-AGE, DISTALZ, Lille, France.
Background: BIN1 is a major susceptibility gene for AD and BIN1 protein interacts with Tau. However, the contribution of BIN1 and its isoforms to AD pathogenesis remains unclear. We recently described that human BIN1 isoform1 (BIN1iso1) induces an accumulation of early endosome vesicles leading to neurodegeneration in Drosophila retina and that the early endosome size regulation was conserved in human induced neurons.
View Article and Find Full Text PDFAlzheimers Dement
December 2024
University of Texas Medical Branch, Galveston, TX, USA.
Background: Alzheimer's disease (AD) is the memory-related neurodegenerative disorder, contributing to 70% of the cases globally. Synaptic dysfunction is a well-known early event that causes progressive cognitive decline in AD. The latest AD therapeutics on the forefront only offer a moderate symptomatic relief with significant off-target effects.
View Article and Find Full Text PDFACS Sens
January 2025
School of Chemistry, Australian Centre for Nanomedicine, The University of New South Wales, Sydney, NSW 2052, Australia.
Achieving sensors that can sensitively and selectively quantify levels of analytes in complex biofluids such as blood remains a significant challenge. To address this, we synthesized an array of isolated carbon nanochannels on a flat gold electrode that function as molecular sieves to prevent protein fouling and eliminate the need for antifouling layers. Utilizing a two-step pulsed technique, a reductive pulse expels negative interferences and fouling molecules followed by an oxidative pulse that oxidizes glucose at the bottom of the channel and on the gold surface.
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