Dr SaeJune Park
Lecturer in THz Electronics and Head of THz Laboratory
School of Electronic Engineering and Computer Science
Queen Mary University of London
Queen Mary University of London
Research
Terahertz (THz), Spectroscopy, Photonics, Sensors, Electronics
Interests
More info can be found on the Park Lab website: parklab.ukI am a Lecturer in Terahertz Electronics & the Head of the Terahertz Laboratory at the School of Electronic Engineering and Computer Science, Queen Mary University of London (QMUL) and a Professor, by courtesy, in the Department of Physics at Ajou University. I have published over 36 journal papers, 18 of which as first/corresponding author, and have citations over 1,300 and an h-index over 17 according to Google Scholar.
My PhD programme back in South Korea focused on developing dielectric/biological sensors in the THz frequency region using THz time-domain spectroscopy. One of my papers reported microbial sensing for the first time with THz metasurface. I also investigated perovskite’s crystallisation kinetics using THz spectroscopy and studied a phase transition of perovskite film with an abrupt switch in the growth dimensionality.
Then, I moved to the UK and took up a Research Fellow position at the University of Leeds (2018) where I expanded my expertise in on-chip THz spectroscopy. On-chip THz spectroscopy enables the examination of samples/systems with highly confined in-plane THz waves. I demonstrated on-chip THz tuneable plasmonic devices based on a two-dimensional electron gas channel. I also reported a novel technique to measure the THz permittivity of unknown dielectric materials even for an extremely small amount of specimens using resonators integrated with on-chip waveguides.
In 2021, I joined QMUL to lead the Terahertz Laboratory. Since then, I have been trying to integrate my experience in free-space THz spectroscopy into on-chip THz devices. For example, I reported a significant enhancement in fingerprint detection of an extremely small amount of lactose using on-chip THz devices. A meta-atom probe integrated with the on-chip THz waveguide was also developed to detect colorectal cancer. I am continuing to work on developing free-space THz applications as well and recently reported a study on selective detection of microplastic particles in water using surface-functionalised THz microfluidic metasurface.
Publications
Publications of specific relevance to the Centre for Electronics2023
Nourinovin S, Rahman MM, Park SJ, Hamid H, Philpott MP and Alomainy A (2023). Terahertz Dielectric Characterization of Three-Dimensional Organotypic Treated Basal Cell Carcinoma and Corresponding Double Debye Model. IEEE Transactions on Terahertz Science and Technology, Institute of Electrical and Electronics Engineers (IEEE) vol. 13 (3), 246-253. 31-03-2023
Nourinovin S, Park SJ, Abbasi QH and Alomainy A (2023). An ultrathin and flexible terahertz electromagnetically induced transparency-like metasurface based on asymmetric resonators. EPJ Applied Metamaterials, EDP Sciences vol. 10 01-01-2023
2022
Park SJ and Ahn YH (2022). Detection of Polystyrene Microplastic Particles in Water Using Surface-Functionalized Terahertz Microfluidic Metamaterials. Applied Sciences, MDPI vol. 12 (14) 14-07-2022
Park SJ, Tucker R, Pickwell-MacPherson E and Cunningham JE (2022). Design of a Split Ring Resonator Integrated with On-Chip Terahertz Waveguides for Colon Cancer Detection. Advanced Theory and Simulations, Wiley 01-07-2022
2021
Park SJ, Parker-Jervis R and Cunningham J (2021). Enhanced Terahertz Spectral-Fingerprint Detection of α-Lactose Using Sub-Micrometer-Gap On-Chip Waveguides. Advanced Theory and Simulations, Wiley-Blackwell 07-12-2021
Dawood A, Park SJ, Parker-Jervis R, Wood CD, Li L, Linfield EH, Davies AG, Cunningham JE and Sydoruk O (2021). Effect of mesa geometry on low-terahertz frequency range plasmons in two-dimensional electron systems. Journal of Physics D, IOP Publishing vol. 55 (1) 06-10-2021
Sulollari N, Keeley J, Park S, Rubino P, Burnett AD, Li L, Rosamond MC, Linfield EH, Davies AG, Cunningham JE and Dean P (2021). Coherent terahertz microscopy of modal field distributions in micro-resonators. APL Photonics, AIP Publishing vol. 6 (6) 01-06-2021
Park SJ, Zonetti S, Parker-Jervis RS, Wu J, Wood CD, Li LH, Davies AG, Linfield EH, Sydoruk O and Cunningham JE (2021). Terahertz magnetoplasmon resonances in coupled cavities formed in a gated two-dimensional electron gas. Optics Express, Optica Publishing Group vol. 29 (9), 12958-12966. 13-04-2021
Yoo HK, Bin Cho S, Park SJ, Ahn YH, Kang C, Hwang I-W and Lee JW (2021). Metal-Organic Hybrid Metamaterials for Spectral-Band Selective Active Terahertz Modulators. Applied Sciences, MDPI vol. 11 (6) 19-03-2021
Parker-Jervis RS, Park SJ and Cunningham JE (2021). Tunable terahertz band-stop filter using strongly coupled split ring resonators integrated with on-chip waveguide. Journal of Applied Physics, AIP Publishing vol. 129 (5) 01-02-2021
2020
Park SJ and Cunningham J (2020). Determination of Permittivity of Dielectric Analytes in the Terahertz Frequency Range Using Split Ring Resonator Elements Integrated with On-Chip Waveguide. Sensors, MDPI vol. 20 (15) 30-07-2020
Park SJ and Cunningham J (2020). Effect of Substrate Etching on Terahertz Metamaterial Resonances and Its Liquid Sensing Applications. Sensors, MDPI vol. 20 (11) 01-06-2020
2019
Yoon SA, Cha SH, Jun SW, Park SJ, Park J-Y, Lee S, Kim HS and Ahn YH (2019). Identifying different types of microorganisms with terahertz spectroscopy. Biomedical Optics Express, Optica Publishing Group vol. 11 (1), 406-416. 23-12-2019
Cha SH, Park S and Ahn YH (2019). Investigation of Sensitivity Distribution in THz Metamaterials Using Surface Functionalization. Current Optics and Photonics 01-12-2019
Meng K, Park SJ, Li LH, Bacon DR, Chen L, Chae K, Park JY, Burnett AD, Linfield EH, Davies AG and Cunningham JE (2019). Tunable broadband terahertz polarizer using graphene-metal hybrid metasurface. Optics Express, Optica Publishing Group vol. 27 (23), 33768-33778. 04-11-2019
Meng K, Park SJ, Burnett AD, Gill T, Wood CD, Rosamond M, Li LH, Chen L, Bacon DR, Freeman JR, Dean P, Ahn YH, Linfield EH, Davies AG and Cunningham JE (2019). Increasing the sensitivity of terahertz split ring resonator metamaterials for dielectric sensing by localized substrate etching. Optics Express, Optica Publishing Group vol. 27 (16), 23164-23172. 30-07-2019
2018
Nguyen VT, Yim W, Park SJ, Son BH, Kim YC, Cao TT, Sim Y, Moon Y, Nguyen VC, Seong M, Kim S, Ahn YH, Lee S and Park J (2018). Phototransistors with Negative or Ambipolar Photoresponse Based on As‐Grown Heterostructures of Single‐Walled Carbon Nanotube and MoS2. Advanced Functional Materials, Wiley vol. 28 (40) 12-08-2018
2017
Yim W, Park SJ, Han SY, Park YH, Lee SW, Park HJ, Ahn YH, Lee S and Park J-Y (2017). Carbon Nanotubes as Etching Masks for the Formation of Polymer Nanostructures. ACS Applied Materials & Interfaces, American Chemical Society (ACS) vol. 9 (50), 44053-44059. 08-12-2017
Park S and Ahn YH (2017). Accurate Measurement of THz Dielectric Constant Using Metamaterials on a Quartz Substrate. Current Optics and Photonics 01-12-2017
Song M-S, Hwang I-W, Lee C-L, Kang C, Kee C-S, Park S, Ahn YH, Park DJ and Lee JW (2017). Effects of Organic Thin Films on Local Resonance of Metamaterials under Photoexcitation. Current Optics and Photonics 01-08-2017
Park SJ, Cha SH, Shin GA and Ahn YH (2017). Sensing viruses using terahertz nano-gap metamaterials. Biomedical Optics Express, Optica Publishing Group vol. 8 (8), 3551-3558. 07-07-2017
Hong JT, Park SJ, Park J-Y, Lee S and Ahn YH (2017). Terahertz slot antenna devices fabricated on silver nanowire network films. Optical Materials Express, Optica Publishing Group vol. 7 (5) 24-04-2017
Tenggara AP, Park SJ, Yudistira HT, Ahn YH and Byun D (2017). Fabrication of terahertz metamaterials using electrohydrodynamic jet printing for sensitive detection of yeast. Journal of Micromechanics and Microengineering, IOP Publishing vol. 27 (3) 06-02-2017
Park SJ, Kim AR, Hong JT, Park JY, Lee S and Ahn YH (2017). Crystallization Kinetics of Lead Halide Perovskite Film Monitored by In Situ Terahertz Spectroscopy. The Journal of Physical Chemistry Letters, American Chemical Society (ACS) vol. 8 (2), 401-406. 05-01-2017
2016
Park SJ and Ahn YH (2016). Differential Transmission Spectra of Terahertz Metamaterial Resonances for Sensing Microorganisms. Korean Journal of Optics and Photonics, Korean Journal of Optics and Photonics vol. 27 (6), 229-232. 25-12-2016
Park SJ, Yoon SAN and Ahn YH (2016). Effective Sensing Volume of Terahertz Metamaterial with Various Gap Widths. Journal of the Optical Society of Korea, Korean Journal of Optics and Photonics vol. 20 (5), 628-632. 25-10-2016
Kim SJ, Park SJ, Kim HY, Jang GS, Park DJ, Park J-Y, Lee S and Ahn YH (2016). Characterization of chemical doping of graphene by in-situ Raman spectroscopy. Applied Physics Letters, AIP Publishing vol. 108 (20) 16-05-2016
Park SJ, Yoon SAN and Ahn YH (2016). Dielectric constant measurements of thin films and liquids using terahertz metamaterials. RSC Advances, Royal Society of Chemistry (RSC) vol. 6 (73), 69381-69386. 01-01-2016
2015
Park SJ, Jun SW, Kim AR and Ahn YH (2015). Terahertz metamaterial sensing on polystyrene microbeads: shape dependence. Optical Materials Express, Optica Publishing Group vol. 5 (10), 2150-2155. 08-09-2015
Jeong H, Jeong SY, Park DJ, Jeong HJ, Jeong S, Han JT, Yang S, Kim HY, Baeg K-J, Park SJ, Ahn YH, Suh E-K, Lee G-W, Lee YH and Jeong MS (2015). Suppressing spontaneous polarization of p-GaN by graphene oxide passivation: Augmented light output of GaN UV-LED. Scientific Reports, Springer Nature vol. 5 (1) 14-01-2015
2014
Park SJ, Son BH, Choi SJ, Kim HS and Ahn YH (2014). Sensitive detection of yeast using terahertz slot antennas. Optics Express, Optica Publishing Group vol. 22 (25), 30467-30472. 01-12-2014
Park SJ and Ahn YH (2014). Substrate effects on terahertz metamaterial resonances for various metal thicknesses. Journal of the Korean Physical Society, Korean Physical Society vol. 65 (11), 1843-1847. 01-12-2014
Park SJ, Hong JT, Choi SJ, Kim HS, Park WK, Han ST, Park JY, Lee S, Kim DS and Ahn YH (2014). Detection of microorganisms using terahertz metamaterials. Scientific Reports, Springer Nature vol. 4 (1) 16-05-2014
Park DJ, Park SJ, Park I and Ahn YH (2014). Dielectric substrate effect on the metamaterial resonances in terahertz frequency range. Current Applied Physics, Elsevier vol. 14 (4), 570-574. 01-04-2014
2013
Hong JT, Lee KM, Son BH, Park SJ, Park DJ, Park J-Y, Lee S and Ahn YH (2013). Terahertz conductivity of reduced graphene oxide films. Optics Express, Optica Publishing Group vol. 21 (6), 7633-7640. 20-03-2013
Grants
Grants of specific relevance to the Centre for ElectronicsMicroplastic sensors based on terahertz metasurfaceSaejune Park
£449,855 EPSRC Engineering and Physical Sciences Research Council (01-04-2024 - 31-03-2027)