arXiv subjects

Claudia Silva

Publications and source records attributed to Claudia Silva.

3 recordsLinked to original sources

arXiv2024

Weight update in ferroelectric memristors with identical and non-identical pulses

Ferroelectric tunnel junctions (FTJs) are a class of memristor which promise low-power, scalable, field-driven analog operation. In order to harness their full potential, operation with identical pulses is targeted. In this paper, several weight update schemes for FTJs are investigated, using either non-identical or identical pulses, and with time delays between the pulses ranging from 1 us to 10 s. Experimentally, a method for achieving non-linear weight update with identical pulses at long programming delays is demonstrated by limiting the switching current via a series resistor. Simulations show that this concept can be expanded to achieve weight update in a 1T1C cell by limiting the switching current through a transistor operating in sub-threshold or saturation mode. This leads to a maximum linearity in the weight update of 86% for a dynamic range (maximum switched polarization) of 30 μC/cm2. It is further demonstrated via simulation that engineering the device to achieve a narrower switching peak increases the linearity in scaled devices to >93 % for the same range.

cond-mat.mtrl-sci↗

arXiv2024

INDCOR White Paper 5: Addressing Societal Issues in Interactive Digital Narratives

This white paper introduces Interactive Digital Narratives (IDN) as a powerful tool for tackling the complex challenges we face in today's society. In the scope of COST Action 18230 - Interactive Narrative Design for Complexity Representation (INDCOR), a group of researchers dedicated to studying media selected five case studies of IDNs, including educational games and news media, that confront and challenge the existing traditional media landscape. These case studies cover a wide range of important societal issues, such as racism, coloniality, cultural heritage, war, and disinformation. By exploring this broad range of examples, we aim to demonstrate how IDN can effectively address social complexity in an interactive, participatory, and engaging manner. We encourage you to examine these cases and discover for yourself how IDN can be used as a creative tool to address complex societal issues. This white paper might be inspiring for journalists, digital content creators, game designers, developers, educators using information and communication technologies in the classroom, or anyone interested in learning how to use IDN tools to tackle complex societal issues. In this sense, along with key scientific references, we offer key takeaways at the end of this white paper that might be helpful for media practitioners at large, in two main ways: 1) Designing IDNs to address complex societal issues and 2) Using IDNs to engage audiences with complex societal issues.

cs.HC↗

arXiv2024

Eden model for Pentagons

We study topological and geometric properties of a cell growth process in the Euclidean plane, where the cells are regular pentagons. To explore the aesthetic aspects of this model, we employ a laser cutter on various materials to create physical representations for some simulations of the model.

math.GT↗