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Dr. Tongjun Liu

Project
Nano-motion imaging microscopy

Short CV
Tongjun Liu received his B. Sc. from Yangzhou University in 2015. He obtained his Master degree in Optical Engineering from Wuhan National Laboratory for Optoelectronics (WNLO), Huazhong University of Science and Technology (HUST) in 2018. He was a summer R&D intern in Huawei Technologies Co., Ltd in 2017. Tongjun joined the Optoelectronics Research Centre as a PhD Student in September 2018.

Articles since 2018

  1. Continuous space-time crystal state driven by nonreciprocal optical forces
    V. Raskatla, T. Liu, J. Li, K. F. MacDonald, and N. I. Zheludev
    Phys. Rev. Lett. 133, 136202 (2024) doi: 10.1103/PhysRevLett.133.136202
  2. Breaking of time translation symmetry and ergodicity, and entropy decrease in a continuous time crystal driven by nonreciprocal optical forces
    T. Liu, V. Raskatla, J. Li, K. F. MacDonald and N. I. Zheludev
    arXiv doi: 10.48550/arXiv.2404.10525
  3. Picophotonic localization metrology beyond thermal fluctuations
    T. Liu, C-H. Chi, J. Y. Ou, J. Xu, E. A. Chan, K. F. MacDonald and N. I. Zheludev
    Nat. Mater. 22, 844–847 (2023) doi: 10.1038/s41563-023-01543-y - pdf

    [Press coverage: phys.org]
  4. Photonic metamaterial analogue of a continuous time crystal
    T. Liu, J. Y. Ou, K. F. MacDonald, and N. I. Zheludev
    Nat. Phys. 19, 986–991 (2023) doi: 10.1038/s41567-023-02023-5 - pdf

    Nat. Phys. Research briefing: Realization of a continuous time crystal in a photonic metamaterial doi: 10.1038/s41567-023-02043-1 - pdf

    [Press coverage: phys.org]
  5. Ballistic dynamics of flexural thermal movements in a nanomembrane revealed with subatomic resolution
    T. Liu, J. Y. Ou, N. Papasimakis, K. F. MacDonald, V. E. Gusev, and N. I. Zheludev
    Sci. Adv. 8 (33), eabn8007 (2022) doi: 10.1126/sciadv.abn8007 - pdf
  6. Thermal fluctuations of the optical properties of nanomechanical photonic metamaterials
    J. Li, D. Papas, T. Liu, J. Y. Ou, K. F. MacDonald, E. Plum, and N. I. Zheludev
    Adv. Opt. Mater. 10(5), 2101591 (2022) doi: 10.1002/adom.202101591 - pdf
  7. Visualization of Sub-atomic Movements in Nanostructures
    T. Liu, J. Y. Ou, E. Plum, K. F. MacDonald, and N. I. Zheludev
    Nano Lett. 21(18), 7746-7752 (2021) doi: 10.1021/acs.nanolett.1c02644 - free access
  8. Gigahertz Nano-Optomechanical Resonances in a Dielectric SiC-Membrane Metasurface Array
    I. A. Ajia, J. Y. Ou, N. J. Dinsdale, H. J. Singh, T. Chen-Sverre, T. Liu, N. I. Zheludev, and O. L. Muskens
    Nano Lett. 11, 4563-4569 (2021) doi: 10.1021/acs.nanolett.1c00205
  9. Detection of sub-atomic movement in nanostructures
    T. Liu, J. Y. Ou, K. F. MacDonald, and N. I. Zheludev
    Nanoscale Adv. 3, 2213 (2021) doi: 10.1039/d0na01068e - pdf

Conference Contributions since 2018

  1. (invited) Optical nonreciprocal forces, ergodicity and entropy in metamaterial time crystals
    N. I. Zheludev, V. Raskatla, T. Liu, J. Li, K. F. MacDonald
    18th International Congress on Artificial Materials for Novel Wave Phenomena (Metamaterials’2024), Crete, Greece, 9 – 14 Sept 2024
  2. (invited) Optical nonreciprocal forces, ergodicity and entropy of space-time crystals
    V. Raskatla, T. Liu, J. Li, K. F. MacDonald, and N. I. Zheludev
    SPIE Photonics Europe 2024, Strasbourg, France, 7 - 11 Apr 2024
  3. Continuous space-time crystal state driven by nonreciprocal optical forces
    V. Raskatla, T. Liu, K. F. MacDonald and N. I. Zheludev
    Nanometa 2024, Seefeld, Austria, 3 - 6 Jan 2024
  4. (breakthrough) Nonreciprocal phase transitions and time-space crystals
    K. F. MacDonald, T. Liu, V. Raskatla, J. Li, and N. I. Zheludev
    Nanometa 2024, Seefeld, Austria, 3 - 6 Jan 2024
  5. Global synchronization via non-reciprocal coupling: A route to photonic time crystals
    V. Raskatla, T. Liu, J. Y. Ou, K. F. MacDonald, and N. I. Zheludev
    17th International Congress on Artificial Materials for Novel Wave Phenomena (Metamaterials’2023), Platanias, Greece, 11–14 Sept 2023
    [3rd place Student Paper Competition]
  6. Photonic metamaterial continuous time crystal
    T. Liu, V. Raskatla, J. Y. Ou, K. F. MacDonald N. I. Zheludev
    Time Crystals, Krakow, Poland, 6 – 8 Sept, 2023
  7. (invited) Mechanisms of spontaneous synchronization in photonic metamaterial continuous time crystals
    T. Liu, V. Raskatla, J.Li, J. Y. Ou, K. F. MacDonald, and N. I. Zheludev
    SPIE Optics + Photonics, San Diego, CA, USA, 20 – 24 Aug 2023
  8. (invited) A new state of photonic matter: metamaterial continuous time crystal
    N. I. Zheludev K. F. MacDonald, J.-Y. Ou, and T. Liu
    International Conference on Materials for Advanced Technologies 2023, Singapore, 26-30 Jun 2023
  9. Optical parametric metamaterials – frequency mixing, frequency combs and control of brownian motion
    T. Liu, J. Li, V. Raskatla, J. Y. Ou, K. F. MacDonald, and N.I. Zheludev
    CLEO/Europe-EQEC 2023, Munich, Germany, 26 - 30 June 2023
  10. Subatomic optical localization and metrology with topologically structured light
    T. Liu, C-H. Chi, J.Y. Ou, K.F. MacDonald, and N. I. Zheludev
    CLEO/Europe-EQEC 2023, Munich, Germany, 26 - 30 June 2023
  11. Metamaterial continuous time crystal - a new state of photonic matter
    T. Liu, V. Raskatla, J. Y. Ou, K. F. MacDonald, and N. I. Zheludev
    CLEO/Europe-EQEC 2023, Munich, Germany, 26 - 30 June 2023
  12. (invited) Photonic metamaterial continuous time crystal
    T. Liu, V. Raskatla, J. Y. Ou, K. F. MacDonald, and N. I. Zheludev
    International Conference on Antennas and Electromagnetic Systems 2023, Torremolinos, Spain, 3-6 June 2023
  13. Metamaterial continuous time crystal
    T. Liu, J. Y. Ou, K. F. MacDonald, and N. I. Zheludev
    CLEO 2023, San Jose, USA, 7-12 May 2023
  14. (invited) Metamaterial analogue of a continuous time crystal
    T. Liu, J. Y. Ou, K. F. MacDonald and N. I. Zheludev
    MRS Spring Meeting 2023 , San Francisco, CA, USA, 10-14 Apr 2023
  15. (invited) Picophotonics - subatomic optical localization beyond thermal fluctuations
    T. Liu, C-H. Chi, J. Y. Ou, K. F. MacDonald and N. I. Zheludev
    MRS Spring Meeting 2023 , San Francisco, CA, USA, 10-14 Apr 2023
  16. (invited) Hyperspectral visualization of picometric motion
    K. F. MacDonald, T. Liu, J.-Y. Ou, and N. I. Zheludev
    Microscopy Conference 2023 , Darmstadt, Germany, 26 Feb – 2 Mar 2023
  17. (invited) Metamaterial analogue of continuous time-crystal
    T. Liu, J. Y. Ou, K. F. MacDonald, N. I. Zheludev
    16th International Congress on Artificial Materials for Novel Wave Phenomena (Metamaterials 2022), Siena, Italy, 12–17 Sept, 2022
  18. (invited) From phase change nanophotonics to phase change nano-opto-mechanics
    T. Liu, D. Papas, J. Li, J. Y. Ou, E. Plum, K. F. MacDonald, and N. I. Zheludev
    META 2022, Torremolinos, Spain, 19-22 Jul 2022
  19. Picophotonics: Sub-Brownian detection of nanowire position with atomic-scale resolution using topologically structured light
    T. Liu, J.-Y. Ou, J. Xu, K. F. MacDonald, and N. I. Zheludev
    CLEO 2022, San Jose, CA, USA, 15-20 May 2022
  20. Experimental observations of thermal fluctuations of metamaterial optical properties
    D. Papas, J. Li, T. Liu, J. Y. Ou, K. F. MacDonald, E. Plum, and N. I. Zheludev
    CLEO 2022, San Jose, CA, USA, 15-20 May 2022
  21. Picophotonics: visible invisible
    G. Adamo, E. A. Chan, J. Li, T. Liu, S. Kurdiumov, K.F. MacDonald, J.-Y. Ou, N. Papasimakis, E. Plum, T. Pu, C.R.-Barraza , Y. Wang and N. I. Zheludev
    SPIE Photonics Europe 2022, Strasbourg, France, 3 - 7 April 2022
  22. (keynote) Picophotonics: visible invisible
    G. Adamo, E. A. Chan, J. Li, T. Liu, S. Kurdiumov, K. F. MacDonald, J. Y. Ou, N. Papasimakis, E. Plum, T. Pu, C. Rendon-Barraza, Y. Wang, and N. I. Zheludev
    SPIE Photonics Europe 2022, Strasbourg, France, 3-7 Apr 2022
  23. Thermal fluctuations in the optical properties of dielectric and plasmonic nanomechanical metamaterials
    J. Y. Ou, D. Papas, T. Liu, J. Li, E. Plum, K. F. MacDonald, and N. I. Zheludev
    Nanometa 2022, Seefeld, Austria, 28-31 Mar 2022
  24. (keynote)Optical metrology with sub-atomic resolution
    K. F. MacDonald, T. Liu, J. Y. Ou and N. I. Zheludev
    Nanometa 2022, Seefeld, Austria, 28-31 Mar 2022
  25. (invited) Picophotonics
    C. Rendón-Barraza, E. A. Chan, J. Li, T. Liu, K. F. MacDonald, J.-Y. Ou, D. Papas, N. Papasimakis, E. Plum, T. Pu, G. Yuan, and N. I. Zheludev
    15th International Congress on Artificial Materials for Novel Wave Phenomena, Virtual Meeting, 20-26 Sept 2021
  26. (invited) Picophotonics: Visible invisible
    C. Rendón-Barraza, E. A. Chan, S. Kurdiumov, T. Liu, K. F. MacDonald, J. Y. Ou, N. Papasimakis, T. Pu, G. Yuan and N. I. Zheludev
    SPIE Optics & Photonics 2021, Virtual Conference, 1 - 5 Aug 2021
  27. (invited) Metamaterial Nanomachines driven by heat, sound, electric and magnetic fields, and light
    T. Liu, J. Li, D. Papas, J. Y. Ou, E. Plum, K. F. MacDonald, and N. I. Zheludev
    SPIE Optics & Photonics 2021, Virtual Conference, 1 - 5 Aug 2021
  28. (invited) Dynamics of nanomechanical metamaterials: Pico-vibrometry with light and electron beams
    J. Y. Ou, T. Liu, J. Li, D. Papas, E. Plum, K. F. MacDonald, and N. I. Zheludev
    META 2021, Virtual Conference, 20 - 23 July 2021
  29. (invited) Nanomechanical photonic metamaterials
    E. Plum, D. Papas, J. Li, T. Liu, J. Y. Ou, Q. Zhang, G. Lan, K. F. MacDonald, and N. I. Zheludev
    Materials for Humanity (MH21), Virtual Conference, 6-9 July 2021
  30. Flat photonic devices based on nanomechanical metamaterials driven by light, sound, electric and magnetic signals
    J. Li, T. Liu; K. F. MacDonald, J. Y. Ou, D. Papas, E. Plum, and N. I. Zheludev
    Optical Design and Fabrication Congress, Virtual Conference, 27 Jun - 1 Jul 2021
  31. First Observation of Phonon-induced Ballistic Motion in Photonic Nanostructures
    T. Liu, J. Y. Ou, K. F. MacDonald, and N. I. Zheludev
    CLEO/Europe-EQEC 2021 Virtual Meeting, 21 - 25 June 2021
  32. Picometric Ballistic (non-Brownian) Thermal Movements in Photonic Nanostructures
    T. Liu, J. Y. Ou, K. F. MacDonald, and N. I. Zheludev
    CLEO 2021 Virtual Conference, 9-14 May 2021
  33. Ultrafast Hyperspectral Nanomotion Imaging of Ballistic and Brownian Motion in Metamaterial Nanostructures
    T. Liu, J. Y. Ou, K. F. MacDonald and N. I. Zheludev
    Metamaterials 2020 (Virtual Conference), 28 Sept – 01 Oct 2020
  34. (invited) Functional nanomechanical metamaterials
    J. Y. Ou, D. Papas, J. Li, T. Liu, Q. Zhang, D. Piccunotti, E. Plum, K. F. MacDonald and N. I. Zheludev
    Photon 2020 (virtual conference), 1-4 Sep 2020
  35. Exotic effects in nanomechanical metamaterials
    J. Y. Ou, D. Papas, J. Li, T. Liu, Q. Zhang, D. Piccinotti, E. Plum and K. F. MacDonald, and N. I. Zheludev
    SPIE Optics & Photonics 2020, Digital Forum, 23 - 27 Aug 2020
  36. (invited) Functional nanomechanical metamaterials driven by light, electromagnetic forces and sound
    N. I. Zheludev, D. Papas, T. Liu, J. Li, Q. Zhang, J. Y. Ou, E. Plum, and K. F. MacDonald
    CLEO 2020 Virtual Conference, 11-15 May 2020
  37. High-frequency nano-motion imaging of artificial nanostructures
    T. Liu, J. Y. Ou, K. F. MacDonald, and N. I. Zheludev
    SPIE Photonics Europe Digital Forum 2020, 6-10 Apr 2020
  38. High-Frequency Nano-motion Electron Imaging for Artificial Nanostructures
    T. Liu, J. Y. Ou, K. F. MacDonald, and N. I. Zheludev
    Electron Beam Spectroscopy for Nanophotonics 2019 (EBSN2019), Paris, France, 16-19 Sept 2019
  39. Imaging of high-frequency motion in artificial nanostructures
    T. Liu, J. Y. Ou, K. F. MacDonald, and N. I. Zheludev
    Metamaterials'2019, Rome, Italy, 16 - 21 Sep 2019

 

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