@article{hosseini_rahmanian_pirzada_frick_krissanaprasit_khan_labean_2022, title={DNA aerogels and DNA-wrapped CNT aerogels for neuromorphic applications}, volume={16}, ISSN={["2590-0064"]}, url={https://doi.org/10.1016/j.mtbio.2022.100440}, DOI={10.1016/j.mtbio.2022.100440}, abstractNote={Nucleic acids are programmable materials that can self-assemble into defined or stochastic three-dimensional network architectures. Various attributes of self-assembled, cross-linked Deoxyribonucleic acid (DNA) hydrogels have recently been investigated, including their mechanical properties and potential biomedical functions. Herein, for the first time, we describe the successful construction of pure DNA aerogels and DNA-wrapped carbon nanotube (CNT) composite (DNA-CNT) aerogels via a single-step freeze-drying of the respective hydrogels. These aerogels reveal highly porous and randomly branched structures with low density. The electrical properties of pure DNA aerogel mimic that of a simple capacitor; in contrast, the DNA-CNT aerogel displays a fascinating resistive switching behavior in response to an applied bias voltage sweep reminiscent of a volatile memristor. We believe these novel aerogels can serve as a platform for developing complex biomimetic devices for a wide range of applications, including real-time computation, neuromorphic computing, biochemical sensing, and biodegradable functional implants. More importantly, insight obtained here on self-assembling DNA to create aerogels will pave the way to construct novel aerogel-based material platforms from DNA coated or wrapped functional entities.}, journal={MATERIALS TODAY BIO}, author={Hosseini, Mahshid and Rahmanian, Vahid and Pirzada, Tahira and Frick, Nikolay and Krissanaprasit, Abhichart and Khan, Saad A. and LaBean, Thomas H.}, year={2022}, month={Dec} }
 @article{frick_hosseini_guilbaud_gao_labean_2022, title={Modeling and characterization of stochastic resistive switching in single Ag2S nanowires}, volume={12}, ISSN={["2045-2322"]}, DOI={10.1038/s41598-022-09893-4}, abstractNote={Abstract}, number={1}, journal={SCIENTIFIC REPORTS}, author={Frick, Nikolay and Hosseini, Mahshid and Guilbaud, Damien and Gao, Ming and LaBean, Thomas H.}, year={2022}, month={Apr} }
 @article{hosseini_frick_guilbaud_gao_labean_2022, title={Resistive switching of two-dimensional Ag2S nanowire networks for neuromorphic applications}, volume={40}, ISSN={["2166-2754"]}, DOI={10.1116/6.0001867}, abstractNote={Randomly assembled networks of nanowires (NWs) can display complex memristive behaviors and are promising candidates for use as memory and computing elements in neuromorphic applications due to device fault tolerance and ease of fabrication. This study investigated resistive switching (RS) in two-dimensional, self-assembled silver sulfide (Ag2S) NW networks first experimentally and then theoretically using a previously reported stochastic RS model. The simulated switching behavior in these networks showed good correlation with experimental results. We also demonstrated fault-tolerance of a small NW network that retained RS property despite being severely damaged. Finally, we investigated information entropy in NW networks and showed unusual dynamics during switching as a result of self-organization of the memristive elements. The results of this work provide insights toward physical implementation of randomly assembled RS NW networks for reservoir and neuromorphic computing research.}, number={4}, journal={JOURNAL OF VACUUM SCIENCE & TECHNOLOGY B}, author={Hosseini, Mahshid and Frick, Nikolay and Guilbaud, Damien and Gao, Ming and LaBean, Thomas H.}, year={2022}, month={Jul} }