Agnieszka Bogusz

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Enhanced levels of Matrix Metalloproteinase-9 (MMP-9) have been implicated in the pathogenesis of epilepsy in humans and rodents. Lack of Mmp-9 impoverishes, whereas excess of Mmp-9 facilitates epileptogenesis. Epigenetic mechanisms driving the epileptogenesis-related upregulation of MMP-9 expression are virtually unknown. The aim of this study was to(More)
Unipolar resistive switching in YMnO3 with large-scale bottom and small-scale top electrodes is analyzed in detail by tracking the morphological transformations of the top electrodes induced by applied writing voltages. Micro-scale digital images are taken after each subsequent quasi-static current-voltage sweep. Current mapping after electrical(More)
The influence of the bottom electrode/substrate on the resistive switching behavior of YMnO<sub>3</sub> thin films was investigated. Unipolar resistive switching was observed when Pt/Ti/SiO<sub>2</sub>/Si and Pt/Al<sub>2</sub>O<sub>3</sub> were employed as a bottom electrode/substrate. YMnO<sub>3</sub> deposited on a SrTiO<sub>3</sub> doped with Nb exhibits(More)
Resistively switching oxides are promising materials for use in electronic applications such as nonvolatile memories, logic gates, and artificial synapses. This work presents the bipolar resistive switching (BRS) in YMnO3/Nb:SrTiO3 pn-heterojunctions. A thermally driven electroforming process is required prior to the observed BRS. Results indicate that the(More)
Low power consumption is crucial for the application of resistive random access memory. In this work, we present the bipolar resistive switching in an Ag/TiOxFy/Ti/Pt stack with extremely low switch-on voltage of 0.07 V. Operating current as low as 10 nA was also obtained by conductive atomic force microscopy. The highly defective TiOxFy layer was(More)
The influence of the bottom electrode/substrate on the resistive switching behavior of YMn03 thin films was investigated. Unipolar resistive switching was observed when Pt/Ti/Si02/Si and Pt/Ab03 were employed as a bottom electrode/substrate. YMn03 deposited on a SrTi03 doped with Nb exhibits bipolar resistive switching characteristics. [t was shown that the(More)
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