@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} }
 @article{gao_krissanaprasit_miles_hsiao_labean_2021, title={Mechanical and Electrical Properties of DNA Hydrogel-Based Composites Containing Self-Assembled Three-Dimensional Nanocircuits}, volume={11}, ISSN={["2076-3417"]}, url={https://doi.org/10.3390/app11052245}, DOI={10.3390/app11052245}, abstractNote={Molecular self-assembly of DNA has been developed as an effective construction strategy for building complex materials. Among them, DNA hydrogels are known for their simple fabrication process and their tunable properties. In this study, we have engineered, built, and characterized a variety of pure DNA hydrogels using DNA tile-based crosslinkers and different sizes of linear DNA spacers, as well as DNA hydrogel/nanomaterial composites using DNA/nanomaterial conjugates with carbon nanotubes and gold nanoparticles as crosslinkers. We demonstrate the ability of this system to self-assemble into three-dimensional percolating networks when carbon nanotubes and gold nanoparticles are incorporated into the DNA hydrogel. These hydrogel composites showed interesting non-linear electrical properties. We also demonstrate the tuning of rheological properties of hydrogel-based composites using different types of crosslinkers and spacers. The viscoelasticity of DNA hydrogels is shown to dramatically increase by the use of a combination of interlocking DNA tiles and DNA/carbon nanotube crosslinkers. Finally, we present measurements and discuss electrically conductive nanomaterials for applications in nanoelectronics.}, number={5}, journal={APPLIED SCIENCES-BASEL}, author={Gao, Ming and Krissanaprasit, Abhichart and Miles, Austin and Hsiao, Lilian C. and LaBean, Thomas H.}, year={2021}, month={Mar} }