Ziwei Qiu

ORCID: 0000-0003-1661-3111
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About
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Research Areas
  • Diamond and Carbon-based Materials Research
  • Electronic and Structural Properties of Oxides
  • Force Microscopy Techniques and Applications
  • Quantum and electron transport phenomena
  • Magnetic Properties and Applications
  • Magnetic properties of thin films
  • High-pressure geophysics and materials
  • Magnetic Field Sensors Techniques
  • Topological Materials and Phenomena
  • Atomic and Subatomic Physics Research
  • Advancements in Battery Materials
  • 2D Materials and Applications
  • Advanced Photocatalysis Techniques
  • Supercapacitor Materials and Fabrication
  • Conducting polymers and applications
  • Electron Spin Resonance Studies
  • Organic Light-Emitting Diodes Research
  • Advanced Materials Characterization Techniques
  • Various Chemistry Research Topics
  • Non-Destructive Testing Techniques
  • Spectroscopy and Chemometric Analyses
  • Lanthanide and Transition Metal Complexes
  • Quantum, superfluid, helium dynamics
  • Formal Methods in Verification
  • Optical Coatings and Gratings

Nanning Normal University
2023

Harvard University
2020-2022

Dalian University
2021

Dalian University of Technology
2021

Peking University
1998-2015

Green energy sees the light: an accumulative enhancement of MoS<sub>2</sub>photocatalysis in hydrogen production is achieved by plasmonic hot electron doping effect.

10.1039/c4nr07303g article EN Nanoscale 2015-01-01

Nitrogen-vacancy (NV) center in diamond is a promising quantum sensor with remarkably versatile sensing capabilities. While scanning NV magnetometry well-established, electrometry has been so far limited to bulk diamonds. Here we demonstrate imaging external alternating (AC) and direct (DC) electric fields single at the apex of tip under ambient conditions. A strong field screening effect observed low frequencies due charge noise on surface. We quantitatively measure its frequency...

10.1038/s41534-022-00622-3 article EN cc-by npj Quantum Information 2022-09-09

Quantum sensing exploits the strong sensitivity of quantum systems to measure small external signals. The nitrogen-vacancy (NV) center in diamond is one most promising platforms for real-world applications, predominantly used as a magnetometer. However, its magnetic field vanishes when bias acts perpendicular NV axis. Here, we introduce novel strategy assisted by nitrogen nuclear spin that uses entanglement between electron and spins restore sensitivity. This, turn, allows us detect changes...

10.1038/s41534-021-00374-6 article EN cc-by npj Quantum Information 2021-02-19

Abstract This paper explores the prediction of soluble solid content (SSC) in visible and near-infrared (400–1,000 nm) regions Baise mango. Hyperspectral images mangoes with wavelengths 400–1,000 nm were obtained using a hyperspectral imaging system. Multiple scatter correction (MSC) was chosen to remove effect noise on accuracy partial least squares (PLS) regression model. On this basis, characteristic mango SSC selected competitive adaptive reweighted sampling (CARS), genetic algorithm...

10.1556/066.2023.00014 article EN Acta Alimentaria 2023-08-09

We report our recent development in pursuing high Quality-Factor (high-Q factor) plasmonic resonances, with vertically aligned two dimensional (2-D) periodic nanorod arrays. The 2-D nano-antenna array can have high-Q resonances varying arbitrarily from near infrared to terahertz regime, as the antenna of are highly tunable through material properties, length nanorod, and orthogonal polarization direction respect lattice surface,. combination small optical mode volume gives a very Purcell...

10.1117/12.2061430 article EN Proceedings of SPIE, the International Society for Optical Engineering/Proceedings of SPIE 2014-09-10

Abstract Nitrogen-vacancy (NV) center in diamond is a promising quantum sensor with remarkably versatile sensing capabilities. While scanning NV magnetometry well-established, electrometry has been so far limited to bulk diamonds. Here we demonstrate imaging external alternating (AC) and direct (DC) electric fields single at the apex of tip under ambient conditions. A strong field screening effect observed low frequencies due charge noise on surface. We quantitatively measure its frequency...

10.21203/rs.3.rs-1636302/v1 preprint EN cc-by Research Square (Research Square) 2022-05-20
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