Insulin is expressed by enteroendocrine cells during human fetal development

Egozi, A; Llivichuzhca-Loja, D; BT, McCourt; K, Bahar Halpern; Farack, L; An, Xiuli; Wang, F; Chen, K; Konnikova, L; Itzkovitz, S

doi:10.1530/ey.19.10.8

Cited by 3 publications

(3 citation statements)

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“…掺铥(Tm 3+ )光纤作为2 μm光纤激光器核心增益介质 [12] , 近年来一直是研究热点领域. 由于传统掺铥石英光纤在高掺杂浓度上存在局限性 [13] , 高浓度掺杂锗酸盐玻璃、碲酸盐玻璃和硅酸盐玻璃 [14] 成为新的研究热点.…”

Section: 引言unclassified

Preparation and optical properties of thulium doped lanthanum aluminum silicate glass photonic crystal fiber

Xia,

Lu,

Huang

et al. 2023

Acta Phys. Sin.

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Lanthanum aluminum silicate glass has excellent optical properties, such as high solubility of rare earth ions, good thermal stability, and excellent physicochemical properties. Some of its physicochemical properties are similar to those of silica glass, so it is easy to combine with silica glass to fabricate special optical fibers. It is considered to be an ideal laser glass matrix material. In this paper, a series of Tm3+ doped lanthanum aluminum silicate glasses with different concentrations for xTm2O3-(70-x)SiO2-21Al2O3-9La2O3 (x=0.2, 0.4, 0.6, 0.8, 1 mol%) were successfully developed by the traditional high-temperature melting method.Using thulium-doped lanthanum aluminum silicate glass as the fiber core,thulium-doped double-cladding photonic crystal optical fibers were prepared by the stack-and-draw technique and rod in tube method.The core diameter of the thulium-doped lanthanum aluminosilicate glass double-clad photonic crystal fiber is up to 21.7 μm, the inner cladding diameter is about 119.3 μm, and the outer diameter is about 236.8μm. The optical properties of thulium-doped lanthanum aluminum silicate glass and its optical fiber were studied experimentally. Under the excitation of a 793 nm laser,the fluorescence bandwidth of thulium-doped lanthanum aluminum silicate glass was up to 223 nm in the wavelength range of 1550-2050 nm.The fiber laser constructed with thulium-doped lanthanum alumino-silicate glass fiber achieves laser operating at around 2 μm.The fiber laser resonant cavity consists of a pair of dichroic mirrors. The front dichroic mirror has high transmittance for light at 793 nm and high reflectivity(99.9%) for the light within the wavelength of 1850-2050 nm. The back dichroic mirror has high reflectivity(99.9%) for light at 793 nm and high transmittance (~15%) at 2050 nm. Under the our lab experimental conditions, the laser power is up to 253 mW. The slope efficiency is up to 9.67%, which is close to that of the thulium-doped glass fiber laser reported in the literature.It is also found that the central wavelength of fiber laser is shifted to the longer wavelength with the increase of the optical fiber's length.These results sugguest that thulium-doped lanthanum aluminum silicate glass and thulium-doped photonic crystal fiber are suitable for 2 μm fiber laser.

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Section: 引言unclassified

Preparation and optical properties of thulium doped lanthanum aluminum silicate glass photonic crystal fiber

Xia,

Lu,

Huang

et al. 2023

Acta Phys. Sin.

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show abstract

“…The latter two of which, respectively, can be used as N-photon laser and states, and have aroused the broad interests of many researchers. Subsequently, multiple quantum bundles have been proposed and studied in various systems, including the cavity QED systems [24][25][26][27][28][29][30][31][32], superconducting circuit systems [33][34][35][36][37][38], waveguides [39][40][41], and hybrid magnet-qubit systems [42][43][44].…”

Section: Introductionmentioning

confidence: 99%

Antibunched N-photon bundles from dark states assisted by ac Stark shift

Gou,

Xu,

Wang

et al. 2024

New J. Phys.

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In this paper, we propose an interesting scheme to generate antibunched N-photon bundles from dark states by using a single-atom cavity quantum electrodynamics (QED) system. The dispersive coupling between the atom and cavity introduces a Stark shift to one of the ground states, while the resonant coupling, along with a control field, forms a coherent N-excitation dark state assisted by the shift. Consequently, super-Rabi oscillation is established between the vacuum state and the N-excitation dark state when a probe field weakly couples to two ground states, enabling antibunched N-photon bundle emission within long-lived atomic coherence. As a byproduct, the generated high-efficiency single-photon source with a large mean photon number and high fidelity is of great value in quantum information processing.

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“…16,19 Hollow microspheres have been prepared by template method or self-assembly, 20,21 such as double hydrophilic block copolymers, 22,23 CO 2 gas, 24 peptides, 25 silica, 26 polymers. 27 Stefano Sacanna et al, 28 by adjusting the positive and negative charges on the surface of polystyrene (PS), started from biphasic colloids, and the two phases could selectively polymerize, liquefy, and dissolve to obtain particles. Obviously, the PPDO surface has no positive or negative charges; therefore, self-assembly is difficult to achieve.…”

Section: Introductionmentioning

confidence: 99%

An Efficient Strategy for Fabricating and Controlling the Morphology of Hollow Poly(p-dioxanone) Microspheres Using an O/W Emulsions Solvent Evaporation Method

Wu,

Ding,

Xiong

et al. 2023

ACS Appl. Polym. Mater.

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Hollow microspheres of biodegradable polyester polylactic-glycolic acid copolymer (PLGA) and polycaprolactone (PCL) materials have broad application prospects in the field of biomedicine and have attracted wide attention in the material industry. However, the production of poly(p-dioxanone) (PPDO) hollow microspheres with simple and low cost has not been confirmed. Here, we propose a modified emulsion solvent evaporation method to prepare PPDO hollow microspheres. Specifically, PPDO is dissolved in dichloromethane (DCM) under heating conditions, in which DCM acts as a solvent and porogen during the process. The effects of PPDO molecular weight and concentration, temperature, and oil phase composition on the morphology of microspheres were systematically investigated by scanning electron microscope (SEM). The results show that 3 w/v% PPDO at 28 °C can develop the hollow morphology of PPDO. After the introduction of ethanol (EtOH) or ethyl acetate (EA) into the oil phase, the solubility of PPDO decreased, the degree of wrinkles of the microspheres containing EtOH increased, and the internal structure was sponge loose, while EA promoted the precipitation of PPDO to a greater extent, resulting in a decrease in the balling rate of the prepared microspheres. This simple strategy considers the solubility and precipitation process of PPDO and provides an efficient way to prepare PPDO hollow microspheres from a single O/W emulsion solvent evaporation method.

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Insulin is expressed by enteroendocrine cells during human fetal development

Cited by 3 publications

References 0 publications

Preparation and optical properties of thulium doped lanthanum aluminum silicate glass photonic crystal fiber

Preparation and optical properties of thulium doped lanthanum aluminum silicate glass photonic crystal fiber

Antibunched N-photon bundles from dark states assisted by ac Stark shift

An Efficient Strategy for Fabricating and Controlling the Morphology of Hollow Poly(p-dioxanone) Microspheres Using an O/W Emulsions Solvent Evaporation Method

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