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Vasiliki Tileli

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Publications associées (41)

Atomic-Step Enriched Ruthenium-Iridium Nanocrystals Anchored Homogeneously on MOF-Derived Support for Efficient and Stable Oxygen Evolution in Acidic and Neutral Media

Vasiliki Tileli, Junjie Li, Lei Liu, Yue Li, Bo Li

Achieving an efficient and stable oxygen evolution reaction (OER) in an acidic or neutral medium is of paramount importance for hydrogen production via proton exchange membrane water electrolysis (PEM-WE). Supported iridium-based nanoparticles (NPs) are th ...

AMER CHEMICAL SOC2021

Electrochemical Functionalization of Selectively Addressed MoS2 Nanoribbons for Sensor Device Fabrication

Aleksandra Radenovic, Michael Graf, Martina Lihter, Yanfei Zhao, Vasiliki Tileli, Michal Daniel Macha, Tzu-Hsien Shen, Miao Zhang

Tailoring the surface properties of 2D materials, such as transition metal dichalcogenides (TMDCs), at the nanoscale is becoming essential in the fabrication of various 2D material-based nanoelectronic devices. Due to the chemical inertness of their basal ...

AMER CHEMICAL SOC2021

Charge/discharge cycling of Li1+x(Ni0.6Co0.2Mn0.2)(1-x)O-2 primary particles performed in a liquid microcell for transmission electron microscopy studies (vol 2, 034007, 2020)

Jing Hou, Vasiliki Tileli, Tzu-Hsien Shen, Robin Pierre Alain Girod

2021

A Method for Spatial Quantification of Water in Microporous Layers of Polymer Electrolyte Fuel Cells by X-ray Tomographic Microscopy

Vasiliki Tileli, Michele Bozzetti

A microporous layer (MPL) is typically added to the gas diffusion layer of polymer electrolyte fuel cells (PEFCs) to promote cell performance and water management. The transport mechanism of the water through the MPL is, however, not well understood due to ...

AMER CHEMICAL SOC2021

Phosphorene Nanoribbon-Augmented Optoelectronics for Enhanced Hole Extraction

Vasiliki Tileli, Arjun Ashoka

Phosphorene nanoribbons (PNRs) have been widely predicted to exhibit a range of superlative functional properties; however, because they have only recently been isolated, these properties are yet to be shown to translate to improved performance in any appl ...

AMER CHEMICAL SOC2021

Real-time Monitoring Reveals Dissolution/Redeposition Mechanism in Copper Nanocatalysts during the Initial Stages of the CO2 Reduction Reaction

Raffaella Buonsanti, Vasiliki Tileli, Tzu-Hsien Shen, Jan Vávra, Dragos-Constantin Stoian

Size, morphology, and surface sites of electrocatalysts have a major impact on their performance. Understanding how, when, and why these parameters change under operating conditions is of importance for designing stable, active, and selective catalysts. He ...

Wiley-VCH Verlag GmbH2021

Individual Barkhausen Pulses of Ferroelastic Nanodomains

Dragan Damjanovic, Vasiliki Tileli, Reinis Ignatans

Ferroelectric materials, upon electric field biasing, display polarization discontinuities known as Barkhausen jumps, a subclass of a more general phenomenon known as crackling noise. Herein, we follow at the nanoscale the motion of 90 degree needle domain ...

2021

Lithium-Gold Reference Electrode for Potential Stability DuringIn SituElectron Microscopy Studies of Lithium-Ion Batteries

Nikolaos Nianias, Jing Hou, Vasiliki Tileli, Jialiang Fan, Tzu-Hsien Shen, Robin Pierre Alain Girod

Electrochemical liquid-phase transmission electron microscopy (TEM) is showing excellent promise in fundamental studies of energy-related processes including lithium-ion battery (LIB) cycling. A key requirement to accurately interpret the measurements and ...

2020

The emergence of magnetic ordering at complex oxide interfaces tuned by defects

Paul Muralt, Yen-Chun Chen, Vasiliki Tileli, Daesung Park, Gurpreet Singh, Jing Li

Complex oxides show extreme sensitivity to structural distortions and defects, and the intricate balance of competing interactions which emerge at atomically defined interfaces may give rise to unexpected physics. In the interfaces of non-magnetic complex ...

Nature Research2020

Charge/discharge cycling of Li1+x(Ni0.6Co0.2Mn0.2)1−xO2 primary particles performed in a liquid microcell for transmission electron microscopy studies

Jing Hou, Vasiliki Tileli, Tzu-Hsien Shen, Robin Pierre Alain Girod

Ni-rich layered oxides are promising positive electrodes for fulfillment of government and industry targets for lithium-ion-battery-operated electric mobility purposes. Apart from ongoing research focusing on their design and material production, advanced ...

2020

Oxygen Evolution Reaction in Ba0.5Sr0.5Co0.8Fe0.2O3-delta Aided by Intrinsic Co/Fe Spinel-Like Surface

Thi Ha My Pham, Vasiliki Tileli, Tzu-Hsien Shen, Jan Vávra

Among the perovskites used to catalyze the oxygen evolution reaction (OER), Ba0.5Sr0.5Co0.8Fe0.2O3-delta (BSCF) exhibits excellent activity which is thought to be related to dynamic reconstruction at the flexible perovskite surface due to accommodation of ...

AMER CHEMICAL SOC2020

Structured nanoscale metallic glass fibres with extreme aspect ratios

Giuseppe Schiavone, Güven Kurtuldu, Inès Richard, Stéphanie Lacour, Grégoire Courtine, Dang Tùng Nguyen, Fabien Sorin, Wei Yan, Yunpeng Qu, Vasiliki Tileli, Nicholas David James, Jordan Squair, Reinis Ignatans

Micro- and nanoscale metallic glasses offer exciting opportunities for both fundamental research and applications in healthcare, micro-engineering, optics and electronics. The scientific and technological challenges associated with the fabrication and util ...

Nature Publishing Group2020

Local hard and soft pinning of 180° domain walls in BaTiO3 probed by in situ transmission electron microscopy

Dragan Damjanovic, Vasiliki Tileli, Reinis Ignatans

2020

Production of phosphorene nanoribbons

Vasiliki Tileli

Phosphorene is a mono-elemental, two-dimensional (2D) substance with outstanding, highly directional properties and a bandgap that depends on the number of layers of the material(1-8). Nanoribbons, meanwhile, combine the flexibility and unidirectional prop ...

NATURE PUBLISHING GROUP2019

Electrochemical Behavior of Carbon Electrodes for In Situ Redox Studies in a Transmission Electron Microscope

Nikolaos Nianias, Vasiliki Tileli, Robin Pierre Alain Girod

Electrochemical liquid cell transmission electron microscopy (TEM) is a unique technique for probing nanocatalyst behavior during operation for a range of different electrocatalytic processes, including hydrogen evolution reaction (HER), oxygen evolution r ...

CAMBRIDGE UNIV PRESS2019

Impact of Intermittent Operation on Lifetime and Performance of a PEM Water Electrolyzer

Vasiliki Tileli, Tzu-Hsien Shen

The aim of this study is to provide a better understanding of performance degrading mechanisms occurring when a proton exchange membrane water electrolyzer (PEM-WE) is coupled with renewable energies, where times of operation and idle periods alternate. An ...

ELECTROCHEMICAL SOC INC2019

The Effect of Surface Reconstruction on the Oxygen Reduction Reaction Properties of LaMnO3

Vasiliki Tileli, Reinis Ignatans

Perovskites have been widely studied for electrocatalysis due to the exceptional activity they exhibit for surface-mediated redox reactions. To date, descriptors based on density functional theory calculations or experimental measurements have assumed a bu ...

AMER CHEMICAL SOC2019

Multi-modal and multi-scale non-local means method to analyze spectroscopic datasets

Martial Duchamp, Vasiliki Tileli

A multi-modal and multi-scale non-local means (M3S-NLM) method is proposed to extract atomically resolved spectroscopic maps from low signal-to-noise (SNR) datasets recorded with a transmission electron microscope. This method improves upon previously test ...

ELSEVIER2019

Geometrical Effect in 2D Nanopores

Andras Kis, Aleksandra Radenovic, Duncan Thomas Lindsay Alexander, Davide Deiana, Ke Liu, Dumitru Dumcenco, Martina Lihter, Vasiliki Tileli, Aditya Sarathy

A long-standing problem in the application of solid-state nanopores is the lack of the precise control over the geometry of artificially formed pores compared to the well-defined geometry in their biological counterpart, that is, protein nanopores. To date ...

American Chemical Society (ACS)2017

Nanoscale structural oscillations in perovskite oxides induced by oxygen evolution

Vasiliki Tileli

Understanding the interaction between water and oxides is critical for many technological applications, including energy storage, surface wetting/self-cleaning, photocatalysis and sensors. Here, we report observations of strong structural oscillations of B ...

Nature Publishing Group2017

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