Dr. Xiao Guo

Dr. Xiao Guo

He/Him

Postdocotral research fellow in terahertz, SNOM, and nanophotonics

Posts by Collection

portfolio

IRMMW-THz 2024 (Perth)

Published:

My first time in THz conference and see people on papers in the real life!

NFO-17 (Melbourne)

Published:

My first time in near-field optics conference! Academic fan meet academic idols. It is awesome to meet so many near-field optics idols, especially Rainer ;-) and Javier :) Thanks Prof. Ken Crozier and Prof. Stefan Maier to organise such a fabulous event!


Diary of my career progression [post-2022.Dec]

Published:

  • Dec. 1-6, 2024: Xiao will give an oral presentation as well as a 30-min talk for attocube s-SONM workshop in NFO-17 / AIP Congress 2024 [held in Melbourne]! It is the first time for Xiao to attend near-field optics conferences! Stay tuned! [Update: Amazing vibes! Looking forward to NFO-18 in Brno, Czech Republic]
  • Nov. 15-18, 2024: Xiao has been honoured to ask as the interim chair for morning sessions in ISUPTW 2024 [THz part] and also delivered an invited talk about THz nanoscopy. (Thanks Prof. Tianwu Wang)
  • Sep. 1, 2024: Xiao has given an invited student workshop seminar in IRMMW-THz 2024 in Perth, Australia. (Thanks Prof. Vincent Wallace and Prof. Aleksandar D. Rakić)
  • April 10, 2024: Xiao’s invited review article about THz nanoscopy [Applied Physics Review] is selected as Feature article by Editors!
  • May 2023: We get a front cover on JPCL! It is about a THz spectral anomaly found on Tantalum oxides (UQ Electrical Engineering and Physics Collaboration)
  • March 22nd, 2023: The investigation of polaritonic features and surfaced doped property of nominally high-resistivity silicon nanodevices has been finally accepted on Nanophotonics! (UQ Electrical Engineering and Physics Collaboration)
  • Dec. 16, 2022: I obtained my PhD degree! Thanks my adviors (Prof. Aleksandar D. Rakić and Dr. Karl Bertling) and my examination committee (Prof. Roger Lewis, Prof. Mengkun Liu, and committee chair Prof. Markus Barth)!
  • May 2022: Xiao participated 2nd International Nanoscale Analytics Workshop (Munich, Germany) — for the first time to enter Europe and for the first time see SNOM leading experts face to face, not just on the papers! Bravo!
  • 2021: We get a front cover and Edtors’ pick-up on APL! (UQ Electrical Engineering and Physics Collaboration)
  • January, 2021: My first paper in my PhD get published on APL! My s-SNOM journey begins from here.

publications

High-efficiency sono-solar-induced degradation of organic dye by the piezophototronic/photocatalytic coupling effect of FeS/ZnO nanoarrays

Published in Nanotechnology, 2016

Undergraduate Research Project Outcome: Demonstrated the enhancement of organic dye degradation for wastewater treatment using ZnO-based nanoarrays, driven by the piezoelectric effect in conjunction with external ultrasonic and solar stimuli.

Recommended citation: Guo X, Fu Y, Hong D, Yu B, He H, Wang Q, Xing L, Xue X. High-efficiency sono-solar-induced degradation of organic dye by the piezophototronic/photocatalytic coupling effect of FeS/ZnO nanoarrays. Nanotechnology. 2016 Aug 8;27(37):375704.
Download Paper

[Front Cover, Editors’ Pick-up] Near-field terahertz nanoscopy of coplanar microwave resonators

Published in Applied Physics Letters, 2021

Reveal unconsidered fabrication-induced doping on nominally high-resistivity silicon transmission line in coplanar waveguide structure for superconducting quantum computing by extracting both real and imaginary part of complex permittivity and fitted by Drude model.

Recommended citation: Guo X, He X, Degnan Z, Donose BC, Bertling K, Fedorov A, Rakić AD, Jacobson P. Near-field terahertz nanoscopy of coplanar microwave resonators. Applied Physics Letters. 2021 Aug 30;119(9).
Download Paper

Terahertz nanospectroscopy of plasmon polaritons for the evaluation of doping in quantum devices

Published in Nanophotonics, 2023

Observe surface plasmon polaritonic features in nominally high-resistiviy silicon-based quantum devices and reconstruct the multilayer nanostructure complex permittivity and the supported polariton dispersion curve

Recommended citation: Guo X, He X, Degnan Z, Chiu CC, Donose BC, Bertling K, Fedorov A, Rakić AD, Jacobson P. Terahertz nanospectroscopy of plasmon polaritons for the evaluation of doping in quantum devices. Nanophotonics. 2023 May 8;12(10):1865-75.
Download Paper

[Front Cover] Near-field localization of the boson peak on tantalum films for superconducting quantum devices

Published in The Journal of Physical Chemistry Letters, 2023

Observe unreported THz spectral anomaly —boson peaks— across two rare-earth metallic oxide phases on tantalum surface (beyond silicon-based), correlating to amorphous oxides at the nanoscale, which is contributing as loss channels or two-level systems in cryogenic temperature measurements.

Recommended citation: Guo X, Degnan Z, Steele JA, Solano E, Donose BC, Bertling K, Fedorov A, Rakić AD, Jacobson P. Near-field localization of the boson peak on tantalum films for superconducting quantum devices. The Journal of Physical Chemistry Letters. 2023 May 18;14(20):4892-900.
Download Paper

[Feature Article] Terahertz nanoscopy: Advances, challenges, and the road ahead

Published in Applied Physics Reviews, 2024

An invited reivew article on THz nanoscopy — challenges, progress, and the road ahead. (Based on part of my PhD thesis chapter 2)

Recommended citation: Guo X, Bertling K, Donose BC, Brünig M, Cernescu A, Govyadinov AA, Rakić AD. Terahertz nanoscopy: Advances, challenges, and the road ahead. Applied Physics Reviews. 2024 Jun 1;11(2) 021306.
Download Paper

Near-field nanoscopy of terahertz collective excitations for silicon-based quantum technologies

Published in 2024 49th International Conference on Infrared, Millimeter, and Terahertz Waves, 2024

IRMMW-THz 2024, 20-min oral presentation + a 50-min student workshop session.

Recommended citation: Guo, X., He, X., Degnan, Z., Chiu, C.C., Bertling, K., Donose, B.C., Fedorov, A., Jacobson, P. and Rakić, A.D., 2024, September. Near-field nanoscopy of terahertz collective excitations for silicon-based quantum technologies. In 2024 49th International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz) (pp. 1-2). IEEE. doi: 10.1109/IRMMW-THz60956.2024.10697801.

talks

teaching