Multiple surface plasmon resonances enhanced nonlinear optical microscopy

Mi, Xiaohu; Wang, Yuyang; Li, Rui; Sun, Mengtao; Zhang, Zhenglong; Zheng, Hairong

doi:10.1515/nanoph-2018-0231

Cited by 45 publications

(36 citation statements)

References 31 publications

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“…Our homemade setup of nonlinear optical microscopy of CARS, SHG and TPEF has been described in detail previously . An integrated laser system (Newport, Inc.) was built up as the light source for the pump, probe and Stokes beams.…”

Section: Methodsmentioning

confidence: 99%

Biological nascent evolution of snail bone and collagen revealed by nonlinear optical microscopy

Wang

et al. 2019

Journal of Biophotonics

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Using nonlinear optical microscopy of coherent antistokes Raman scattering (CARS), second harmonic generation (SHG) and two-photo excitation fluorescence, we in situ observed how the collagen and the bone grow synergistically and competitively during nascent biological evolution. The sdsCO 2− 3 and PO 2− 3 ions were first observed to be dispersed in the liquid environment, and the collagen was observed 2 days later. With the help of the collagen, the CO 2− 3 and PO 2− 3 ions gradually moved closer to the collagen, and then the bone was produced in the forms of CaCO 3 and CaPO 3 . When the bone was completed with the help of the collagen, the collagen gradually disappeared. The biological evolution of snail bone and collagen can be well revealed by CARS and SHG, and in addition, the biological evolution of structure and morphology can be clearly observed day by day. K E Y W O R D S biological nascent evolution, bone, CARS, collagen, nonlinear optical microscopy, SHG, snail, TPEF

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Section: Methodsmentioning

confidence: 99%

Biological nascent evolution of snail bone and collagen revealed by nonlinear optical microscopy

Wang

et al. 2019

Journal of Biophotonics

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“…The Au nanorods were synthesized by the seedmediated wet-chemical method we reported [44]. The single-crystal Au microplates were synthesized by a wetchemical method [45].…”

Section: Experimental Section 21 Sample Preparationmentioning

confidence: 99%

Plasmonic nanocavity enhanced vibration of graphene by a radially polarized optical field

Zhang

et al. 2020

Nanophotonics

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Abstract The combination of 2D materials and surface plasmon can produce some novel optical phenomena that have attracted much attention. Illuminated by light with different polarization states, the field distribution around the plasmonic structure can control the light-matter interaction. The interaction between graphene and light can be strongly enhanced by employing radially polarized beams in a nanocavity. Here, we study the selectively enhanced vibration of graphene in a coupled plasmonic gold nanocavity with a radially polarized optical field, and the coupling and enhancing mechanisms are investigated both experimentally and numerically. By focusing a radially polarized beam, a high z component of a localized near field in the nanocavity is provided to strongly enhance the interaction between graphene and light, which can be used to enhance the vibrational signal of the interlayer. For the in-plane vibration of graphene, a similar enhancement is obtained with a linearly and radially polarized optical field. A plasmonic nanocavity is used to enhance the vibration of graphene, which provides potential applications in studying the out-of-plane vibration mode and exploring the mechanism of the interlayer coupling of 2D materials.

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“…Due to its excellent optical and electronic properties, two‐dimensional (2D) nanomaterials have great potentiality in plasmon‐enhanced spectroscopy, optoelectronic and thermoelectric device, and energy and biomedicine fields . The rapidly developed 2D black phosphorus (BP) attracts extensive attention because of its tunable bandgap that fills the gap between graphene with zero bandgap and transitional metal dichalcogenides with larger bandgap .…”

Section: Introductionmentioning

confidence: 99%

Tip‐enhanced spectroscopy of 2D black phosphorus

Gao

Sun

Meng

2019

J Raman Spectroscopy

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Optical studies on black phosphorus (BP) are crucial for its applications in plasmon‐enhanced spectroscopy, biomedicine, and energy. Plasmonic enhancement, spatial resolution, and directional emission, which related to tip‐enhanced spectroscopy of few‐layer BP, have been theoretically investigated. Calculated Raman and fluorescence enhancement factors are 8 and 3 orders of magnitude, respectively. The spatial resolutions for Raman and fluorescence spectroscopy could reach 6 and 7 nm, respectively, under the 633‐nm laser wavelength. Directional tip‐enhanced spectroscopy emission reveals a tunable optimized collection angle by changing the tilted angle of the tip. Our theoretical results provide a deep understanding of the underlying enhanced mechanism of BP spectroscopy, useful for the design of nanoelectronic and optoelectronic devices.

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Multiple surface plasmon resonances enhanced nonlinear optical microscopy

Cited by 45 publications

References 31 publications

Biological nascent evolution of snail bone and collagen revealed by nonlinear optical microscopy

Biological nascent evolution of snail bone and collagen revealed by nonlinear optical microscopy

Plasmonic nanocavity enhanced vibration of graphene by a radially polarized optical field

Tip‐enhanced spectroscopy of 2D black phosphorus

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