Zobrazeno 1 - 10
of 64
pro vyhledávání: '"Ioannis Zeimpekis"'
Publikováno v:
Frontiers in Nanotechnology, Vol 6 (2024)
In this study, we report on a memristive device structure wherein monolayers of two-dimensional (2D) molybdenum disulfide (MoS2) are integrated with an ultrathin yttrium oxide (Y2O3) layer to simulate artificial synapses functionality. The proposed p
Externí odkaz:
https://doaj.org/article/d0dfa477de9746948acca15e7d08c864
Autor:
Nikolaos Aspiotis, Katrina Morgan, Benjamin März, Knut Müller-Caspary, Martin Ebert, Ed Weatherby, Mark E. Light, Chung-Che Huang, Daniel W. Hewak, Sayani Majumdar, Ioannis Zeimpekis
Publikováno v:
npj 2D Materials and Applications, Vol 7, Iss 1, Pp 1-11 (2023)
Abstract This work demonstrates a large area process for atomically thin 2D semiconductors to unlock the technological upscale required for their commercial uptake. The new atomic layer deposition (ALD) and conversion technique yields large area perf
Externí odkaz:
https://doaj.org/article/9dd10522d2d54446b767855a1e8c5e7f
Autor:
Sayani Majumdar, Ioannis Zeimpekis
Publikováno v:
Advanced Intelligent Systems, Vol 5, Iss 11, Pp n/a-n/a (2023)
Online training of deep neural networks (DNN) can be significantly accelerated by performing in situ vector‐matrix multiplication in a crossbar array of analog memories. However, training accuracies often suffer due to nonideal properties of synaps
Externí odkaz:
https://doaj.org/article/dc95872765054af5af2d5ed86c338abc
Autor:
Stefan T. Ilie, Joaquin Faneca, Ioannis Zeimpekis, Thalía Domínguez Bucio, Katarzyna Grabska, Daniel W. Hewak, Harold M. H. Chong, Frederic Y. Gardes
Publikováno v:
Scientific Reports, Vol 12, Iss 1, Pp 1-10 (2022)
Abstract A new family of phase change material based on antimony has recently been explored for applications in near-IR tunable photonics due to its wide bandgap, manifested as broadband transparency from visible to NIR wavelengths. Here, we characte
Externí odkaz:
https://doaj.org/article/ab50b74835cf4e02bbe4a3f37436ab83
Autor:
Omar Adnan Abbas, Adam Henry Lewis, Nikolaos Aspiotis, Chung-Che Huang, Ioannis Zeimpekis, Daniel W. Hewak, Pier Sazio, Sakellaris Mailis
Publikováno v:
Scientific Reports, Vol 11, Iss 1, Pp 1-12 (2021)
Abstract Laser processing is a highly versatile technique for the post-synthesis treatment and modification of transition metal dichalcogenides (TMDCs). However, to date, TMDCs synthesis typically relies on large area CVD growth and lithographic post
Externí odkaz:
https://doaj.org/article/7f5a224c3ae34281bd528ac6ac21ef2f
Autor:
Frederic Gardes, Afrooz Shooa, Greta De Paoli, Ilias Skandalos, Stefan Ilie, Teerapat Rutirawut, Wanvisa Talataisong, Joaquín Faneca, Valerio Vitali, Yaonan Hou, Thalía Domínguez Bucio, Ioannis Zeimpekis, Cosimo Lacava, Periklis Petropoulos
Publikováno v:
Sensors, Vol 22, Iss 11, p 4227 (2022)
In this review we present some of the recent advances in the field of silicon nitride photonic integrated circuits. The review focuses on the material deposition techniques currently available, illustrating the capabilities of each technique. The rev
Externí odkaz:
https://doaj.org/article/ab4fcbea4c22431ba033401c3a9781a1
Autor:
Artemios Karvounis, Nikolaos Aspiotis, Ioannis Zeimpekis, Jun‐Yu Ou, Chung‐Che Huang, Daniel Hewak, Nikolay I. Zheludev
Publikováno v:
Advanced Science, Vol 6, Iss 21, Pp n/a-n/a (2019)
Abstract The change of optical properties that some usually natural compounds or polymeric materials show upon the application of external stress is named mechanochromism. Herein, an artificial nanomechanical metasurface formed by a subwavelength nan
Externí odkaz:
https://doaj.org/article/84aac195255242f3adde9a89d0901391
Autor:
Joaquin Faneca, Ioannis Zeimpekis, S T Ilie, Thalía Domínguez Bucio, Katarzyna Grabska, Daniel W Hewak, Frederic Y Gardes
Publikováno v:
Neuromorphic Computing and Engineering, Vol 1, Iss 1, p 014004 (2021)
Photonic integrated circuits currently use platform intrinsic thermo-optic and electro-optic effects to implement dynamic functions such as switching, modulation and other processing. Currently, there is a drive to implement field programmable photon
Externí odkaz:
https://doaj.org/article/9d8b4538987247b7bb55480231b38252
Autor:
Ioannis Zeimpekis, Konstantinos I. Papadimitriou, Kai Sun, Chunxiao Hu, Peter Ashburn, Hywel Morgan, Themistoklis Prodromakis
Publikováno v:
Sensors, Vol 17, Iss 9, p 2000 (2017)
We present a complete biosensing system that comprises a Thin Film Transistor (TFT)-based nanoribbon biosensor and a low noise, high-performance bioinstrumentation platform, capable of detecting sub-30 mpH unit changes, validated by an enzymatic bioc
Externí odkaz:
https://doaj.org/article/9fb7cda2e0454ba797d0ccb070fc6db8
Autor:
Stefan T. Ilie, Joaquin Faneca, Ioannis Zeimpekis, Thalía Domínguez Bucio, Katarzyna Grabska, Daniel W. Hewak, Harold M. H. Chong, Frederic Y. Gardes
Publikováno v:
Scientific Reports. 12
A new family of phase change material based on antimony has recently been explored for applications in near-IR tunable photonics due to its wide bandgap, manifested as broadband transparency from visible to NIR wavelengths. Here, we characterize$$\hb
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::dcd200bc72e340db3d92f6b3ac300610
https://doi.org/10.1038/s41598-022-21590-w
https://doi.org/10.1038/s41598-022-21590-w