Dongfang Li

ORCID: 0000-0002-0471-118X
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About
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Research Areas
  • Photoacoustic and Ultrasonic Imaging
  • Thermography and Photoacoustic Techniques
  • Dental Radiography and Imaging
  • Optical Imaging and Spectroscopy Techniques
  • Endodontics and Root Canal Treatments
  • Nanoplatforms for cancer theranostics
  • Advanced Fiber Laser Technologies
  • Additive Manufacturing and 3D Printing Technologies
  • Photonic and Optical Devices
  • Geotechnical Engineering and Underground Structures
  • Dental materials and restorations
  • Dental Implant Techniques and Outcomes
  • Infrared Thermography in Medicine
  • Nanomaterials for catalytic reactions
  • Peripheral Artery Disease Management
  • Enterobacteriaceae and Cronobacter Research
  • Bone Tissue Engineering Materials
  • Escherichia coli research studies
  • Welding Techniques and Residual Stresses
  • Material Properties and Processing
  • Semiconductor Quantum Structures and Devices
  • Thermoregulation and physiological responses
  • Fatigue and fracture mechanics
  • Diagnosis and Treatment of Venous Diseases
  • Viral gastroenteritis research and epidemiology

Nanjing University
2012-2024

China Construction Eighth Engineering Division (China)
2023-2024

Collaborative Innovation Center of Advanced Microstructures
2022-2023

Nanchang University
2007-2020

Beijing University of Technology
2017

State Key Laboratory of Pollution Control and Resource Reuse
2012

University of Science and Technology Beijing
2012

BGI Group (China)
2011

Beijing Forestry University
2010

An outbreak caused by Shiga-toxin–producing Escherichia coli O104:H4 occurred in Germany May and June of 2011, with more than 3000 persons infected. Here, we report a cluster cases associated single family describe an open-source genomic analysis isolate from one member the family. This involved use rapid, bench-top DNA sequencing technology, data release, prompt crowd-sourced analyses. In less week, these studies revealed that strain belonged to enteroaggregative E. lineage had acquired...

10.1056/nejmoa1107643 article EN public-domain New England Journal of Medicine 2011-07-27

Dental implant surgery has a relatively high incidence of peri-implantitis. In this research, ZnO nanorods and nanospheres were synthesized by hydrothermal method. first covered the surface Ti or Ti-Zr, then modified as outermost layer. By these means dual antibacterial effect could be realized rapid release sustained nanorods. Subsequent studies implied that nanorods-nanospheres hierarchical structure (NRS) stably loaded on roughened Ti-Zr slices. The materials not only showed excellent...

10.1021/acsbiomaterials.9b01695 article EN ACS Biomaterials Science & Engineering 2020-03-05

Abstract Microcirculation imaging has significantly clinical value in early diagnosis and curative effect judgment of various diseases. The most superficial layer the nailbed is rich capillaries, which suitable as a window on microcirculation. However, few techniques can noninvasively observe blood supply distribution nailbed, especially for high‐resolution capillaries. In this study, we adapted an optical‐resolution photoacoustic microscopy (OR‐PAM) to image microvasculature. sensitivity...

10.1002/jbio.202300058 article EN Journal of Biophotonics 2023-05-12

The stay cable is one of the most critical structural components a dome structure. However, during its service life, it may lose stiffness due to environmental factors and metal fatigue, thus making structure safety hazard. As important mechanical physical parameter cable, necessary create health-monitoring method ensure In this study, smart with fiber optic Bragg grating (FBG) sensor proposed. embedded in Z-shaped simultaneous deformation cable. monitoring force can be achieved after...

10.3390/buildings13092186 article EN cc-by Buildings 2023-08-28

Monitoring microvascular structure and function is of great significance for the diagnosis many diseases. In this study, we demonstrate feasibility OR-PAM to nailbed microcirculation detection as a new, best our knowledge, application scenario in humans. We propose dual-wavelength optical-resolution photoacoustic microscopy (OR-PAM) with improved local-flexible coupling image human microvasculature. Microchip lasers 532 nm wavelength are employed pump sources. The 558 laser generated from...

10.1364/ol.502305 article EN Optics Letters 2023-10-12

Abstract Stress intensity factor (SIF) is one of the key parameters on analysing and studying fracture important parts such as pressure pipeline. This paper studied surface semi-elliptical crack thin-walled pipeline in nuclear power station (NPS). In order to analyse SIF, model was established simulate tip stress singularity created by ANSYS finite element. Under thermal-stress coupling load, element model's K value calculated compared entity with shape ratio (a/b) being 0.6, 0.7 0.8....

10.1016/j.proeng.2011.12.624 article EN Procedia Engineering 2012-01-01

Photoacoustic microscopy has demonstrated outstanding performance in high-resolution functional imaging. However, the process of photoacoustic imaging, signals will be polluted by inevitable background noise. Besides, image quality is compromised due to biosafety limitation laser. The conventional approach improving quality, such as increasing laser pulse energy or multiple-times averaging, could result more health risks and motion artifacts for high exposures To overcome this challenge we...

10.1364/oe.541906 article EN cc-by Optics Express 2024-12-24

In this study, we designed a self-focused ultrasonic transducer made of polyvinylidene fluoride (PVDF). This involves back-reflector, which is modeled after tapetum lucidum in the eyes some nocturnal animals. The bionic structure reflects ultrasound, passes through PVDF membrane, back to and provides second chance for convert ultrasound electric signals. design increases amount absorbed by PVDF, thereby improving detection sensitivity. Both photoacoustic (PA) experiments were conduct...

10.1364/oe.513574 article EN cc-by Optics Express 2023-12-19

An acoustic coupling scheme largely determines the performance of optical-resolution photoacoustic microscopy (OR-PAM), including practicability, sensitivity, and stability. In this study, we propose OR-PAM based on a local-flexible scheme, which includes well-designed combiner connecting set circulating systems. The integrates an objective lens ultrasonic transducer, controls water level, restricts flow rate, drains bubbles. system provides sustained steady flowing water. constrained in...

10.1364/ol.457652 article EN Optics Letters 2022-06-27

10.12016/j.issn.2096⁃1456.2017.12.001 article EN DOAJ (DOAJ: Directory of Open Access Journals) 2018-12-01

We present a method to simultaneously engineer the energy-momentum dispersion and local density of optical states. Using vertical symmetry-breaking in high-contrast gratings, we enable mixing modes with different parities, thus producing hybridized controlled dispersion. By tuning geometric parameters, control coupling between Bloch modes, leading flatband, M- W-shaped as well Dirac Such platform opens up new way direction emitted photons, enhance spontaneous emission into desired modes....

10.48550/arxiv.1810.04034 preprint EN other-oa arXiv (Cornell University) 2018-01-01
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