Publications by Xi Chen | EPFL Graph Search

Advanced analysis of fully-printed organic transistors platform for multi-ion detection in sweat

Danick Briand, Silvia Demuru, Xi Chen, Brince Paul Kunnel, Jaemin Kim

Organic electrochemical transistors are emerging as prominent biochemical sensors for multi-sensing, including ions, metabolites, hormones, or viruses. However, the implementation of the devices is mainly limited to a single-analyte detection and a single- ...

Elsevier BV2025

First Demonstration of Erbium -Doped Waveguide Amplifier Enabled Multi-Tb/s (16x1.6T) Coherent Transmission

Tobias Kippenberg, Xi Chen, Xinru Ji, Yang Liu, Zheru Qiu

We demonstrate the first EDWA-enabled Terabit-class coherent optical communication with 1.6-Tb/s net bit rate per channel and 16 -channel WDM transmission over 81 -km fiber, proving the potential of such on-chip amplification for future coherent applicatio ...

IEEE2023

Correlated insulator collapse due to quantum avalanche via in-gap ladder states

Xi Chen, Camille Didier Georges Aron

The significant discrepancy observed between the predicted and experimental switching fields in correlated insulators under a DC electric field far-from-equilibrium necessitates a reevaluation of current microscopic understanding. Here we show that an elec ...

Nature Portfolio2023

Dopaminergic neurodegeneration induced by Parkinson's disease-linked G2019S LRRK2 is dependent on kinase and GTPase activity

Darren Moore, Elpida Tsika, Xi Chen

Mutations in leucine-rich repeat kinase 2 (LRRK2) are the most common cause of late-onset, autosomal-dominant familial Parkinson's disease (PD). LRRK2 functions as both a kinase and GTPase, and PD-linked mutations are known to influence both enzymatic acti ...

National Academy of Sciences2020

DIII-D research towards establishing the scientific basis for future fusion reactors

Wilfred Anthony Cooper, Richard Pitts, Olivier Sauter, Stefan Müller, Mario Ludovico Podesta, Francesca Maria Poli, Dongbin Zhao, Gang Yu, Huan Du, Alessandro Bortolon, Alessandro Marinoni, Jeffrey Huang, Sun Hee Kim, Jérôme Guterl, Zhixian Yan, Fang Liu, Terunobu Akiyama, Xin Yang, Wei Wu, Lorenzo Anton-Louis Talà, Federico David Halpern, Gabriele Merlo, Yu Fu, Shouguo Wang, Sung Chul Park, Xi Chen, Tzu-Hsien Shen, Bingying Zhao, Kyungjin Kim, Ji Hyun Kim, Yi Wang, Hui Wang, Zheng Wang

DIII-D research is addressing critical challenges in preparation for ITER and the next generation of fusion devices through focusing on plasma physics fundamentals that underpin key fusion goals, understanding the interaction of disparate core and boundary ...

IOP Publishing Ltd2019

Flexible Disaster Response of Tomorrow: Final Presentation and Evaluation of the CENTAURO System

Xi Chen, Fabian Maximilian Schilling

Mobile manipulation robots have great potential for roles in support of rescuers on disaster-response missions. Robots can operate in places too dangerous for humans and therefore can assist in accomplishing hazardous tasks while their human operators work ...

2019

Nonlinear electrical conductivity through the thickness of multidirectional carbon fiber composites

Marcos Rubinstein, Anastasios Vassilopoulos, Xi Chen, Jie Li

Lightning strikes pose a serious natural threat to carbon fiber-reinforced poly- mers (CFRPs). Knowledge of the electrical current distribution is essential for modeling the interaction between CFRP with lightning. In most applications, the anisotropy of C ...

2019

The Dark Energy Survey: Data Release 1

Vanda Carla Costa Grisel, Juan Andrei Villarroel Fernandez, Eduardo Sanchez, Josiane Angèle Charlotte Smith-Clerc, Craig Matthew Smith, Aaron James Rossini, Yi Zhang, Augusto Martins Lima, Jonathan Andrew Blazek, Xi Chen, Vikram Vinayak Karve, Jennifer Kaitlyn Olsen, Xin Chen

We describe the first public data release of the Dark Energy Survey, DES DR1, consisting of reduced single-epoch images, co-added images, co-added source catalogs, and associated products and services assembled over the first 3 yr of DES science operations ...

IOP PUBLISHING LTD2018

A Study of Electrical Current Distribution in Anisotropic Materials with Special Reference to Lightning Interaction with Composite Materials

Farhad Rachidi-Haeri, Marcos Rubinstein, Anastasios Vassilopoulos, Aleksandr Smorgonskii, Xi Chen

2017

Conversion of chitin derived N-acetyl-D-glucosamine (NAG) into polyols over transition metal catalysts and hydrogen in water

Ning Yan, Felix Daniel Bobbink, Xi Chen

N-Acetyl-D-glucosamine (NAG), the monomer of the world's second most abundant biopolymer chitin, has been for the first time converted to its corresponding amide/amino substituted sugar alcohols, smaller C2-4 polyols and N-acetylmonoethanolamine (NMEA), ov ...

Royal Soc Chemistry2015

Acid-Catalyzed Chitin Liquefaction in Ethylene Glycol

Ning Yan, Felix Daniel Bobbink, Xi Chen

This paper describes chitin liquefaction in ethylene glycol (EG) under the catalysis of sulfuric acid for the first time. Up to 75% of chitin was liquefied at 165 degrees C within 90 min by using 8 wt % of acid (refer to the mass of EG). The major products ...

Amer Chemical Soc2014

Development of Palladium Surface-Enriched Heteronuclear Au-Pd Nanoparticle Dehalogenation Catalysts in an Ionic Liquid

Gabor Laurenczy, Paul Joseph Dyson, Ning Yan, Yuan Yuan, Xiao Yuan, Xi Chen

Heteronuclear Au–Pd nanoparticles were prepared and immobilized in the functionalized ionic liquid [C2OHmim][NTf2]. The structural and electronic properties of the nanoparticles were characterized by a range of techniques and the surface of the nanoparticl ...

Wiley-Blackwell2013

Selective adsorption and electronic interaction of F16CuPc on epitaxial graphene

Efthimios Kaxiras, Jun Ren, Sheng Meng, Xi Chen

We investigate the electronic coupling between copper hexadecafluoro-phthalocyanine (F16CuPc) and epitaxial graphene (EG) on 6H-SiC (0001) using a combined approach of low-temperature scanning tunneling spectroscopy and electronic structure calculations. T ...

2010