Large-mode-area optical fiber for photonic nanojet generation

Pierron, Robin; Chabrol, Grégoire; Roques, S.; Pfeiffer, Pierre; Yehouessi, Jean-Paul; Bouwmans, Géraud; Lecler, Sylvain

doi:10.1364/ol.44.002474

Cited by 10 publications

(4 citation statements)

References 22 publications

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“…Compared with the previous two samples, WPE treated by micro uidization had the smallest droplet size and most uniform distribution. This was due to the dispersion and division of the macromolecules caused by higher pressures and a stronger shear effect on the emulsion during micro uidization (Pierron et al, 2019). Therefore, micro uidization homogenization can ensure e cient protein aggregate disruption and small droplet size to obtain a more stable emulsion (Oliete et al, 2019).…”

Section: Resultsmentioning

confidence: 99%

Effects of Microfluidization on the Physical and Storage Stability of Walnut Protein Emulsion and Beverages

Ling

Cheng

Bai

et al. 2023

Plant Foods Hum Nutr

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Walnut meal is a by-product produced during the production of walnut oil and is often treated as a waste.However, the nutrients in walnut meal mean it has signi cant potential for development as a plant-based milk. This study investigated the effect of micro uidization on the stability of walnut protein emulsion (WPE) and walnut protein beverage (WPB) produced from walnut meal, compared with conventional homogenization. The particle size, zeta potential, rheological properties, and stability of WPE all signi cantly improved after micro uidization. The mean particle size and zeta potential of the micro uidized WPE signi cantly decreased (p < 0.05). The rheological properties demonstrated that the viscosity of the micro uidized WPE decreased by 80%, and that the shear force increased 4.5 times as the shear rate increased. This gave the resulting product the characteristics of non-Newtonian uid. LUMisizer stability demonstrated that micro uidization improves stability through protein absorption on the oil-water interface. Micro uidization increased the denaturation temperature (Tm) of WPE from 135.65℃ to 154.87℃. Moreover, micro uidization improved the color, centrifugal precipitation rate, and viscosity in WPB compared to the control at all studied temperatures. The Arrhenius approach was used to establish a shelf-life model, which predicted that micro uidized WPB could be stored for 175 d at 4℃.

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Section: Resultsmentioning

confidence: 99%

Effects of Microfluidization on the Physical and Storage Stability of Walnut Protein Emulsion and Beverages

Ling

Cheng

Bai

et al. 2023

Plant Foods Hum Nutr

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“…However, a notable challenge in the field of PNJs is the difficulty in achieving efficient and controllable switching of their properties. Currently, altering the characteristics of PNJs often requires either changing the light source, modifying the structures involved, or adjusting the materials used [20][21][22][23][24][25][26][27]. These approaches may introduce additional complexity and limitations to the system.…”

Section: Introductionmentioning

confidence: 99%

Temperature-Controlled Switchable Photonic Nanojet Generated by Truncated Cylindrical Structure

Su,

Zhang,

Zeng

et al. 2023

Materials

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We propose a novel micro-nano structure that can realize a photonic nanojet (PNJ) switch by adjusting the temperature, which is composed of a truncated cylinder coated with a thin vanadium dioxide (VO2) film. The influence of temperature on the maximum strength, full width at half maximum (FWHM), working distance, and focal length of the PNJ were studied by finite-difference time-domain (FDTD) method. The results demonstrate that the structure can adjust the open and close state of the PNJ by changing the temperature. A PNJ with varying characteristics can be obtained at both high and low temperatures, and the maximum intensity ratio of the PNJ can reach up to 7.25. This discovery provides a new way of optical manipulation, sensing and detection, microscopy imaging, optoelectronic devices, and other fields.

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“…PJ can be obtained using cyilnders, spheres or non-spherical dielectric objects [11]. The interest of PJ has been demonstrated for applications such as enhanced Raman scattering [12][13][14], fluorescence enhancement [15,16], improvement in optical-disk data storage technology [17,18], in sub-micrometer laser etching process on semiconductors and metals [19][20][21][22], to achieve optical tweezers [23] and many other applications [24].…”

Section: Introductionmentioning

confidence: 99%

“…A mechanical micro-holder or optical tweezers are required to manipulate it accurately [19]. For these reasons, more recently, attention has been paid to PJ generation with waveguides [25] and optical fibers; solutions have been proposed to put the sphere at the end of a hollow-core optical fiber [26,27] or to use an optical fiber with a shaped tip [21,[28][29][30][31]. Shaped fiber tips have several advantages: easy to move, no necessary contact with the sample and possibility to collect the backscattered light.…”

Section: Introductionmentioning

confidence: 99%

Photonic Jet-Shaped Optical Fiber Tips versus Lensed Fibers

Bouaziz

Chabrol²,

Guessoum³

et al. 2021

Photonics

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Shaped optical fiber tips have recently attracted a lot of interest for photonic jet light focusing due to their easy manipulation to scan a sample. However, lensed optical fibers are not new. This study analyzes how fiber tip parameters can be used to control focusing properties. Our study shows that the configurations to generate a photonic jet (PJ) can clearly be distinguished from more classical-lensed fibers focusing. PJ is a highly concentrated, propagative light beam, with a full width at half maximum (FWHM) that can be lower than the diffraction limit. According to the simulations, the PJs are obtained when light is coupled in the guide fundamental mode and when the base diameter of the microlens is close to the core diameter. For single mode fibers or fibers with a low number of modes, long tips with a relatively sharp shape achieve PJ with smaller widths. On the contrary, when the base diameter of the microlens is larger than the fiber core, the focus point tends to move away from the external surface of the fiber and has a larger width. In other words, the optical system (fiber/microlens) behaves in this case like a classical-lensed fiber with a larger focus spot size. The results of this study can be used as guidelines for the tailored fabrication of shaped optical fiber tips according to the targeted application.

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Large-mode-area optical fiber for photonic nanojet generation

Cited by 10 publications

References 22 publications

Effects of Microfluidization on the Physical and Storage Stability of Walnut Protein Emulsion and Beverages

Effects of Microfluidization on the Physical and Storage Stability of Walnut Protein Emulsion and Beverages

Temperature-Controlled Switchable Photonic Nanojet Generated by Truncated Cylindrical Structure

Photonic Jet-Shaped Optical Fiber Tips versus Lensed Fibers

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