Publications de Tzu-Heng Chen | EPFL Graph Search

Monitoring Electrochemical Dynamics through Single-Molecule Imaging of hBN Surface Emitters in Organic Solvents

Aleksandra Radenovic, Martina Lihter, Nathan Cyprien Arsène Ronceray, Tzu-Heng Chen, Eveline Simone Mayner

Electrochemical techniques conventionally lack spatial resolution and average local information over an entire electrode. While advancements in spatial resolution have been made through scanning probe methods, monitoring dynamics over large areas is still ...

2024

Liquid-activated quantum emission from native hBN defects for nanofluidic sensing

Aleksandra Radenovic, Martina Lihter, Evgenii Glushkov, Nathan Cyprien Arsène Ronceray, Tzu-Heng Chen, Benjamin Rehl

Liquids confined down to the atomic scale can show radically new properties. However, only indirect and ensemble measurements operate in such extreme confinement, calling for novel optical approaches that enable direct imaging at the molecular level. Here ...

2023

Minimum dataset for "Liquid-activated quantum emission from pristine hexagonal boron nitride for nanofluidic sensing"

Sylvie Roke, Aleksandra Radenovic, Martina Lihter, Evgenii Glushkov, Nathan Cyprien Arsène Ronceray, Tzu-Heng Chen, Jean Camille Benjamin Comtet, Benjamin Rehl

Frames and (linked) localization table used to produce Fig. 2 of the manuscript https://www.nature.com/articles/s41563-023-01658-2. Details are given in 'README.txt'. The rest of the data is provided with the paper at the publisher website. ...

Zenodo2023

Nature-Inspired Stalactite Nanopores for Biosensing and Energy Harvesting

Aleksandra Radenovic, Mukeshchand Thakur, Andrey Chernev, Vasily Artemov, Lucie Navratilova, Nianduo Cai, Yunfei Teng, Tzu-Heng Chen, Victor Carle Adrien Boureau

Nature provides a wide range of self-assembled structures from the nanoscale to the macroscale. Under the right thermodynamic conditions and with the appropriate material supply, structures like stalactites, icicles, and corals can grow. However, the natur ...

Wiley-V C H Verlag Gmbh2023

High Performance Semiconducting Nanosheets via a Scalable Powder-Based Electrochemical Exfoliation Technique

Aleksandra Radenovic, Kevin Sivula, Tzu-Heng Chen, Victor Carle Adrien Boureau, Miao Zhang

The liquid-phase exfoliation of semiconducting transition metal dichalcogenide (TMD) powders into 2D nanosheets represents a promising route toward the scalable production of ultrathin high-performance optoelectronic devices. However, the harsh conditions ...

2022

Silver oxide model surface improves computational simulation of surface-enhanced Raman spectroscopy on silver nanoparticles

Tzu-Heng Chen

Surface-enhanced Raman spectroscopy (SERS) coupled with density functional theory (DFT) computations can characterise the adsorption orientation of a molecule on a nanoparticle surface. When using DFT to simulate SERS on a silver surface, one typically emp ...

2021

Super-resolved Optical Mapping of Reactive Sulfur-Vacancies in Two-Dimensional Transition Metal Dichalcogenides

Aleksandra Radenovic, Andras Kis, Magalí Alejandra Lingenfelder, Martina Lihter, Tzu-Heng Chen, Michal Daniel Macha, Yanfei Zhao, Zhenyu Wang, Jean Camille Benjamin Comtet, Karla Banjac

Transition metal dichalcogenides (TMDs) represent a class of semiconducting two-dimensional (2D) materials with exciting properties. In particular, defects in 2D-TMDs and their molecular interactions with the environment can crucially affect their physical ...

AMER CHEMICAL SOC2021