Publications by Yu Zhang | EPFL Graph Search

Rare predicted loss-of-function variants of type I IFN immunity genes are associated with life-threatening COVID-19 (vol 15, 22, 2023)

Jacques Fellay, Qian Zhang, Peng Zhang, Yu Zhang

BMC2024

Nonlocal Detection of Interlayer Three-Magnon Coupling

Jean-Philippe Ansermet, Haiming Yu, Song Liu, Jilei Chen, Yu Zhang

A leading nonlinear effect in magnonics is the interaction that splits a high-frequency magnon into two low-frequency magnons with conserved linear momentum. Here, we report experimental observation of nonlocal three-magnon scattering between spatially sep ...

AMER PHYSICAL SOC2023

Reconfigurable nonreciprocal excitation of propagating exchange spin waves in perpendicularly magnetized yttrium iron garnet thin films

Jean-Philippe Ansermet, Haiming Yu, Peng Chen, Jilei Chen, Jinlong Wang, Tao Liu, Rundong Yuan, Yu Zhang

We report the nonreciprocal excitation of propagating forward volume exchange spin waves in yttrium iron garnet (YIG) thin film with perpendicular anisotropy by bringing the in-plane magnetization of Co20Fe60B20 (CoFeB) nanowires to resonance. All-electric ...

Amer Physical Soc2023

Autoantibodies against type I IFNs in humans with alternative NF-κB pathway deficiency

Jacques Fellay, Christian Axel Wandall Thorball, Alessandro Borghesi, Qian Zhang, Peng Zhang, Yu Zhang

Patients with autoimmune polyendocrinopathy syndrome type 1 (APS-1) caused by autosomal recessive AIRE deficiency produce autoantibodies that neutralize type I interferons (IFNs) 1,2 , conferring a predisposition to life-threatening COVID-19 pneumonia 3 . ...

Nature Portfolio2023

Rare predicted loss-of-function variants of type I IFN immunity genes are associated with life-threatening COVID-19

Jacques Fellay, Qian Zhang, Peng Zhang, Yu Zhang

BackgroundWe previously reported that impaired type I IFN activity, due to inborn errors of TLR3- and TLR7-dependent type I interferon (IFN) immunity or to autoantibodies against type I IFN, account for 15-20% of cases of life-threatening COVID-19 in unvac ...

BMC2023

Long decay length of magnon-polarons in BiFeO3/La0.67Sr0.33MnO3 heterostructures

Jean-Philippe Ansermet, Haiming Yu, Peng Gao, Dirk Grundler, Jilei Chen, Mohammad Hamdi, Jianyu Zhang, Yu Zhang

Magnons can transfer information in metals and insulators without Joule heating, and therefore are promising for low-power computation. The on-chip magnonics however suffers from high losses due to limited magnon decay length. In metallic thin films, it is ...

Nature Research2021

Inborn errors of type I IFN immunity in patients with life-threatening COVID-19

Jacques Fellay, Zhiyong Liu, Xavier Duval, Rui Yang, Qian Zhang, Juan Li, Jie Chen, Peng Zhang, Yu Zhang

Clinical outcome upon infection with severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) ranges from silent infection to lethal coronavirus disease 2019 (COVID-19). We have found an enrichment in rare variants predicted to be loss-of-function (LOF ...

American Association for the Advancement of Science2020

MEMS-Enabled Silicon Photonic Integrated Devices and Circuits

Niels Quack, Hamed Sattari, Alain Yuji Takabayashi, Yu Zhang

Photonic integrated circuits have seen a dramatic increase in complexity over the past decades. This development has been spurred by recent applications in datacenter communications and enabled by the availability of standardized mature technology platform ...

IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC2020

Compact broadband suspended silicon photonic directional coupler

Niels Quack, Hamed Sattari, Alain Yuji Takabayashi, Yu Zhang

Directional couplers are extensively used in photonic integrated circuits as basic components for efficient on-chip photonic signal routing. Conventionally, directional couplers are fully encapsulated in the technology's waveguide cladding material. In thi ...

OPTICAL SOC AMER2020

Silicon Photonic MEMS: Exploiting Mechanics at the Nanoscale to Enhance Photonic Integrated Circuits

Niels Quack, Banafsheh Abasahl, Shiv Ashish Kumar, Hamed Sattari, Alain Yuji Takabayashi, Yu Zhang

With the maturing and the increasing complexity of Silicon Photonics technology, novel avenues are pursued to reduce power consumption and to provide enhanced functionality: exploiting mechanical movement in advanced Silicon Photonic Integrated Circuits pr ...

IEEE2019

X-ray Raman optical activity of chiral molecules

Jérémy Raymond Jean Maurice Rouxel, Yu Zhang

Resonant and off-resonant Raman Optical Activity signals in the X-ray regime (XROA) are predicted. XROA is a chiral-sensitive variant of the spontaneous Resonant Inelastic Scattering (RIXS) signal. Thanks to the highly localized nature of core excitations, ...

2019

Freestanding Silicon Photonic Ring and Disk Resonators

Niels Quack, Hamed Sattari, Alain Yuji Takabayashi, Yu Zhang

We report freestanding silicon photonic ring and disk resonators fabricated in a simplified silicon photonics process based on IMEC's iSiPP5OG standard platform that have been released by a custom MEMS post-processing step. Experimental results show high o ...

IEEE2019

Porous NiTiO3/TiO2 nanostructures for photocatatalytic hydrogen evolution

Kevin Sivula, Nestor Guijarro Carratala, Yongpeng Liu, Yong Zuo, Ting Zhang, Yu Zhang

We present a strategy to produce porous NiTiO3/TiO2 nanostructures with excellent photocatalytic activity toward hydrogen generation. In a first step, nickel-doped TiO2 needle bundles were synthesized by a hydrothermal procedure. Through the sintering in a ...

Royal Society of Chemistry2019

Silicon Photonic Broadband Suspended Directional Coupler

Niels Quack, Hamed Sattari, Alain Yuji Takabayashi, Yu Zhang

We demonstrate a broadband Silicon Photonic directional coupler that is entirely suspended in air. The device has been fabricated in a simplified Silicon Photonics process based on the standard IMEC ISIPP5OG platform, combined with custom post-processing i ...

IEEE2019

Kinetics of calcium sulfoaluminate with 1% iron oxide by isothermal and isoconversional methods

Xuerun Li, Yu Zhang

The influence of iron oxide (Fe2O3) on the formation and decomposition kinetics of calcium sulfoaluminate (C(4)A(3)$) formed from tricalcium aluminate and calcium sulfate was investigated by both isothermal and isoconversional methods. Rietveld quantitativ ...

Ice Publishing2017