About me

Hi! This is Hao Xu (徐浩), I am now a Postdoctoral Researcher in the Nano-Optoelectronics Lab at Tsinghua University. Prior to here, I received my Ph.D. majoring in micro and nanoelectronics in Jan 2024 at the Institute for Electronics, Microelectronics and Nanotechnology (IEMN), CNRS, France. Outside of work, my interests involve neuroengineering and outdoor sports activities.

My research goal at IEMN, narrowing the gap of conventional thermometer versus optomechanical one, formerly centers on two main areas:

Nanofabrication for MEMS/NEMS. High-Q NEMS sensor devices present their promising roles played by potential applications, such as quantum force sensors. In cleanroom, my fabrication method mainly focuses on using EB lithography and dry etching processes to fabricate high-Q sensor devices, following with sample check and characterization (at room temperature).

Theory modeling and numerical simulating. With cavity-aided sensing, the radiation pressure from light(microwave) circulating in one cavity enables optomechanical coupling between optical(microwave) mode and mechanical mode, then allowing for parametric pump manipulating the mechanical mode. In electrical readout scheme, my aim is to analyze a mode coupling nanoelectromechanical system while pump/probe multifrequency operating. This double-tone scheme offers a new opportunity for phonon based coupling optomechanics.

Previously, I have been fortunate having research training at Tsinghua TBSI and working on micron and nanophotonic devices.

Research keywords - Nanofabrication, MEMS and NEMS, Optomechanics, Nanophotonics

Feel free to reach me by emails: hao(dot)xu at cnrs(dot)fr or haox at tsinghua(dot)edu(dot)cn

News and activities

01/08/2025 I gave an invite talk at Beijing Academy of Quantum Information Sciences with the talk title of “Fabrication and parametric pumping analysis of silicon nitride membrane nanoelectromechanical resonator”. Thank the host, Yulong Liu for giving me this chance.
08/19/2024 I was a remote participant in the Workshop on Quantum Information and Physics held in the Institute for Advanced Study (IAS) at Princeton. The knowledge on entanglement (many-body) physics was deepened and widened.
01/12/2024 I’m giving an invite talk at Xi’an Jiaotong University with the talk title “Fabrication of silicon nitride membrane nanoelectromechanical resonator”. Thank Feng Li, for inviting me.
12/10/2023 I’m attending an online global young scholars’ forum at the Chinese University of Hong Kong Shenzhen. I learn from the worldwide scholars and feel free talk with them.
11/29/2023 I have passed my thesis defense with the title “Analysis of device properties of silicon nitride membrane nanoelectromechanical resonators for future optomechanical thermometry applications”, and have been ~~Dr. Hao~~ Dr. Xu!
06/06/2023 I’m, with Xin and Didier, contributing to our research progress entitled “Scanning microwave microscopy for investigations of mechanical vibrations and mode coupling” in Frontiers of Nanomechanical Systems (FNS) workshop in the Netherlands.
01/30/2023 I’m participating in the event CNRS-IEMN’s 30th anniversary, taking tasty french red wine and cheese and talking with the colleagues. Cheers with IEMN!
10/25/2022 I’m attending a virtual Nature conference on Technologies for Neuroengineering. I learn from the widespread colleagues in the field of Neuroengineering.
10/06/2022 I’m attending a GDR MecaQ Nanomechanics and Optomechanics seminar with the Poster title “Scanning microwave microscopy for detecting mechanical vibrations of silicon nitride membranes” in Bordeaux, France. I spend a very nice time with the colleagues all over the Europe. Thank my advisor, Xin Zhou and Didier Theron giving me this chance.
08/11/2022 Our manuscript “Magnetically tunable and stable deep-ultraviolet birefringent optics using two-dimensional hexagonal boron nitride” is published online in Nature Nanotechnology as a Research article! Nature Nanotech, 17, 1091-1096(2022). Thank my advisor Bilu Liu, Baofu Ding and all coauthors for supporting and discussing each step! Thank all LDMD group members for helps!
02/01/2022 I’m attending a virtual talk by Olivier Arcizet from Neel institute CNRS on the topic of “nanowire dynamics in a 2D force field”.
very early ago