Tongzhou Zhao

ORCID: 0000-0003-1255-8928
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About
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Research Areas
  • Quantum and electron transport phenomena
  • Liquid Crystal Research Advancements
  • Photonic Crystals and Applications
  • Physics of Superconductivity and Magnetism
  • Advanced Sensor and Energy Harvesting Materials
  • Surface and Thin Film Phenomena
  • Advancements in Semiconductor Devices and Circuit Design
  • Advanced Fiber Optic Sensors
  • Characterization and Applications of Magnetic Nanoparticles
  • Quantum Computing Algorithms and Architecture
  • Nonlinear Dynamics and Pattern Formation
  • Magnetic properties of thin films
  • Photonic and Optical Devices
  • Quantum, superfluid, helium dynamics
  • Surfactants and Colloidal Systems
  • Advanced Memory and Neural Computing
  • Quantum Information and Cryptography
  • Phase-change materials and chalcogenides
  • Ocular and Laser Science Research
  • Thermal Radiation and Cooling Technologies
  • Photochromic and Fluorescence Chemistry
  • Semiconductor Lasers and Optical Devices
  • Magnetic Field Sensors Techniques
  • Electrowetting and Microfluidic Technologies
  • Electrical and Thermal Properties of Materials

Institute of Physics
2023-2024

Chinese Academy of Sciences
2024

Hebei Science and Technology Department
2020-2023

Pennsylvania State University
2020-2022

Songshan Lake Materials Laboratory
2021

University of Alabama
2001

A recent work [Balram, Jain, and Barkeshli, Phys. Rev. Res. 2, 013349 (2020)] has suggested that an unconventional state describing ${\mathbb{Z}}_{n}$ superconductivity of composite bosons, which supports excitations with charge $1/(3n)$ the electron charge, is energetically better than Laughlin wave function at $\ensuremath{\nu}=7/3$ in GaAs systems. All experiments to date, however, are consistent latter. To address this discrepancy, we study effect finite width on ground predict a phase...

10.1103/physrevb.103.085303 article EN Physical review. B./Physical review. B 2021-02-05

Pairing of composite fermions provides a possible mechanism for fractional quantum Hall effect at even denominator fractions and is believed to serve as platform realizing quasiparticles with non-Abelian braiding statistics. We present results from fixed-phase diffusion Monte Carlo calculations which predict that substantial Landau level mixing can induce pairing filling factors ν=1/2 ν=1/4 in the l=-3 relative angular momentum channel, thereby destabilizing composite-fermion Fermi seas...

10.1103/physrevlett.130.186302 article EN Physical Review Letters 2023-05-03

In this paper, a highly sensitive and transparent flexible temperature sensor fabricated from the polyethylene terephthalate substrate nematic liquid crystal (1M0921900-000) is proposed, which simultaneously has low power consumption. Using relaxation time (τ = RC) as an intrinsic variable to characterise temperature, better linear fitting with can be obtained at voltage, high precision more stable monitoring achieved. The maximum sensitivity −4.05%/°C 0.1 V 200 Hz. transmittance of reach...

10.1080/02678292.2021.1970834 article EN Liquid Crystals 2021-08-25

Recent systematic measurements of the quantum well width dependence excitation gaps fractional Hall states in high mobility samples [Villegas Rosales {\it et al.}, Phys. Rev. Lett. {\bf 127}, 056801 (2021)] open possibility a better quantitative understanding this important issue. We present what we believe to be accurate theoretical including effects finite and Landau level (LL) mixing. While theory captures dependence, there still remains deviation between calculated measured gaps,...

10.1103/physrevb.105.205147 article EN Physical review. B./Physical review. B 2022-05-31

The nature of the fractional quantum Hall effect at $\ensuremath{\nu}=1/2$, observed in wide wells almost three decades ago, is still under debate. Previous studies have investigated it using variational Monte Carlo method, which assumes that transverse wave function and gap between symmetric antisymmetric subbands obtained a local density approximation zero magnetic field remain valid even high perpendicular fields; this method also ignores Landau level mixing. We develop work...

10.1103/physrevb.103.155306 article EN Physical review. B./Physical review. B 2021-04-26

Optically driving liquid crystal display (ODLCD) uses polarized light field to control the orientation of crystal, and content can be maintained without external electric field, with extremely low power consumption. However, it has a long rewriting time, which is difficult achieve industrialization. In order improve performance, influence rotational viscosity mixed system azo-dyes (SD1, MR) nematic (5CB) on speed investigated. The experimental results show that electro-optical properties...

10.1080/02678292.2024.2310612 article EN Liquid Crystals 2024-02-06

The quantum dynamics of the intrinsic metric profoundly influence neutral excitations in fractional Hall system, as established by Haldane [Phys. Rev. Lett. 107, 116801 (2011)], and further evidenced a recent two-photon experiment [J. Liang et al., Nature (London) 628, 78 (2024)]. Despite these advancements, comprehensive understanding dynamic properties excitations, especially at long wavelengths, continues to elude interest. In this study, we employ tensor-network methods investigate...

10.1103/physrevb.110.195137 article EN Physical review. B./Physical review. B 2024-11-18

Temperature monitoring plays an increasingly important role in research and industrial applications. Based on the influence of liquid crystal material thermal sensitivity capacitance cell, sensing performance capacitive-type temperature sensor were studied. By testing under voltage from 0 V to 20 at different temperatures, capacitance–voltage curve is drawn, then relationship between change rate voltages was obtained, so as analyse its sensitivity. The results show that (RDP-09 T-100)...

10.1080/02678292.2020.1846093 article EN Liquid Crystals 2020-12-01

Both normal and inverse magnetoresistance (MR) response curves were observed for synthetic spin valves with the structure of Si(100)/Ru/Co(t1)/Ru(0.7 nm)/Co(t2)/Cu(3 nm)/Co(t3)/Ru. Under assumption a coherent rotation magnetization in three Co layers, hysteresis loops, response, MR calculated as function parameters system. The include antiferromagnetic coupling Co(t1) Co(t2) through Ru layer, weak ferromagnetic Co(t3) Cu spacer, giant Co/Cu/Co Co/Ru/Co systems, AMR contribution each layer....

10.1063/1.1360679 article EN Journal of Applied Physics 2001-06-01

The thermistor was fabricated by filling the nematic liquid crystal (NLC) material IM95100-000 into a device with an interdigital electrode structure. In temperature range of 25 °C-120 °C, response under different voltages measured step length 5 °C to study its performance. experimental results show that resistance value decreases exponentially increasing in °C. characteristics at can satisfy Steinhart-Hart formula well and nonlinear fitting coefficient reach 0.999; voltage 1 V, total...

10.1109/ted.2021.3084543 article EN IEEE Transactions on Electron Devices 2021-06-08

The quantum dynamics of the intrinsic metric profoundly influence neutral excitations in fractional Hall system, as established by Haldane 2011 \cite{Haldane2011}, and further evidenced a recent two-photon experiment \cite{Liang2024}. Despite these advancements, comprehensive understanding dynamic properties excitations, especially at long wavelengths, continues to elude interest. In this study, we employ tensor-network methods investigate Laughlin Moore-Read states on an infinite cylinder....

10.48550/arxiv.2406.11195 preprint EN arXiv (Cornell University) 2024-06-17

Strong correlation brings a rich array of emergent phenomena, as well daunting challenge to theoretical physics study. In condensed matter physics, the fractional quantum Hall effect is prominent example strong correlation, with Landau level mixing being one most challenging aspects address using traditional computational methods. Deep learning real-space neural network wavefunction methods have emerged promising architectures describe electron correlations in molecules and materials, but...

10.48550/arxiv.2412.14795 preprint EN arXiv (Cornell University) 2024-12-19

The orientation of Nematic liquid crystal (NLC) and order degree LC molecules are easily affected by ambient temperature, so it is great significance to explore the low-temperature properties NLC materials improve performance devices. dielectric elastic constant material 1M10500-000 under high conditions were obtained dual-cell capacitance method, linear fitting method numerical fitting, compared. dynamic response at different temperatures was tested, rotational viscosity calculated....

10.1080/02678292.2021.1892222 article EN Liquid Crystals 2021-03-12

In order to solve the problem of ohmic contact between crystal surface and metal electrode in manufacturing process X/γ-ray detector, this paper uses a laser probe doping In/CdTe crystals different media. experiment, Traveling Heater Method (THM) is used obtain CdTe(111) that meet requirements (ρ >109Ω∙cm). Au materials are respectively coated on sample by vacuum thermal evaporation method meeting requirements. The high-resistance p-type CdTe relatively thick film irradiated with...

10.15330/pcss.22.2.301-306 article EN cc-by Physics and Chemistry of Solid State 2021-05-26

The discrepancy between the theoretically calculated and experimentally measured activation gaps in quantum Hall effect has long been a puzzle. We revisit this issue context of $\ensuremath{\nu}=1$ state, while also incorporating skyrmion physics. find that finite width Landau level mixing effects are not sufficient to explain observed gap. further show presence charged impurities located adjacent well can cause significant reduction gap, causing suppression size.

10.1103/physrevb.104.115303 article EN Physical review. B./Physical review. B 2021-09-09

The image sticking of the liquid crystal display (LCD) is related to residual direct current voltage (RDCV) on cell. saturated DC (SRDCV) can be obtained by analyzing change capacitance cell under application bias (DCB), thus LCD evaluated. Based this, we evaluated hybrid aligned nematic (HAN) (HAN-LCD) with four different alignment layer materials (KPI-300B, PIA-2710, RV-961G, SE-4811(0526)) combinations infused negative dielectric anisotropy, from which effect material was analyzed....

10.1080/15421406.2021.1992573 article EN Molecular Crystals and Liquid Crystals 2021-10-18

Temperature measurement and control has an extremely important role in both scientific research manufacturing. Capacitive liquid crystal (LC) temperature sensors can monitor the using linear variation of capacitance LC cell with temperature, but sensitivity other properties need to be improved. In order improve performance capacitive sensor, we propose mix twisted nematic (1M10600-100) ferromagnetic nanoparticles γ-Fe2O3 prepare sensor this paper. The relationship between change rate...

10.1080/15421406.2022.2033063 article EN Molecular Crystals and Liquid Crystals 2022-02-07

Most properties of liquid crystal (LC) materials will change with the temperature, which makes performance display (LCD) and other devices change. However, at low LC mutate decrease directly leads to defects devices. This paper use developed homemade temperature control device realize construction high environment, using precision LCR meter (Agilent E4980A) self-built optical path, combined cell capacitance model dual-cell model, dynamic response law was explored. The results show that decay...

10.1080/15421406.2023.2174643 article EN Molecular Crystals and Liquid Crystals 2023-02-06

Digital microfluidic biochips(DMFBs) have been widely used in biology, medicine and chemical experiments. These areas all high requirements on the reliability of experimental results. Therefore, it is necessary to conduct chip failure detection during experiment. In this work, based Employed particle swarm optimization algorithm, fault route direct-addressing pin-constrained digital chips are respectively studied. Combining employed search operator Artificial Bee Colony algorithm Particle...

10.12783/dtcse/cnai2018/24142 article EN DEStech Transactions on Computer Science and Engineering 2018-07-12
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