Araldite 506

Manufactured by Merck Group

Araldite 506 is a two-component epoxy resin system designed for industrial applications. It is a clear, low viscosity liquid that can be used for adhesive, encapsulation, and potting applications. The core function of Araldite 506 is to provide a strong, durable, and chemically resistant bond or encapsulation when cured.

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Lab products found in correlation

Bb1 e02, by Thorlabs (1 mentions)

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Araldite (34 citations) Araldite 506 epoxy resin (3 citations)

3 protocols using araldite 506

PMMA Microfiber Fabrication and Doping

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PMMA microfibers used in the experiment were fabricated by physical drawing of solvated polymer. To prepare the polymer solution for passive microfibers, 1000 mg of PMMA powder [weight-average molecular weight (M_w) = 550,000; Alfa Aesar] was first dissolved in 5 ml of chloroform. Subsequently, 500 mg of epoxy resin (Araldite 506 from Sigma-Aldrich) was added into the solvated PMMA to reduce the viscosity, followed by magnetic stirring at room temperature for about 8 hours to ensure the homogeneous mixture. To prepare the polymer solution for active microfibers, in addition to the addition of PMMA and epoxy resin into 5 ml of chloroform with the same weights, 13 mg of R101 dye (from Exciton) was further added into the mixture solution and mixed well by magnetic stirring.
To fabricate PMMA microfibers, we used an electrochemically sharpened tungsten probe to physically dip up a bead out of the polymer solution onto a glass slide, withdrew the probe out of the polymer bead at a speed of about 0.5 m/s, and obtained microfibers after the evaporation of chloroform. To improve the quality of microfibers, all the fabrication process was conducted in a home-made glove box filled with abundant chloroform gas to decrease the evaporation rate of chloroform. The concentration of R101 dye in active microfibers is estimated to be ~20 mM.

Zhou N., Yang Y., Guo X., Gong J., Shi Z., Yang Z., Wu H., Gao Y., Yao N., Fang W., Wang P, & Tong L. (2022). Strong mode coupling-enabled hybrid photon-plasmon laser with a microfiber-coupled nanorod. Science Advances, 8(27), eabn2026.

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Hydrophobic Microresonator Fabrication

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BPMT-doped hemispherical microresonators were obtained via a self-assembly process (hydrophobic effect and surface tension force). A commercial broadband dielectric mirror (i.e., BB1-E02, Thorlabs Inc.) was used as a DBR mirror substrate, with up to 99% reflectivity in the wavelength range of 400–750 nm. The surface of the DBR substrate was treated to become hydrophobic by spin coating a layer of triethoxy (1,1H,2H,2H-perfluoro-1-octyl) silane (POTS, Sigma Aldrich). Dichloromethane (DCM) was used to dissolve both BPMT at 10 mg mL⁻¹ concentration and epoxy resin (Araldite 506, Sigma-Aldrich) at 200 mg mL⁻¹ concentration. The solution for the creation of hemispheres was prepared after blending and DCM solvent evaporation. To fabricate the microresonators, a fiber taper was used to deposite a drop of the aforementioned mixture onto the DBR surface. Hemispherical microresonators were immediately formed due to the hydrophobic effect and surface tension force. The size of the hemispherical microresonator can be controlled from 200 μm to 5 μm by carefully adjusting the volume of solution transferred.

Lv C., Liu W., Luo Q., Yi H., Yu H., Yang Z., Zou B, & Zhang Y. (2020). A highly emissive AIE-active luminophore exhibiting deep-red to near-infrared piezochromism and high-quality lasing. Chemical Science, 11(15), 4007-4015.

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Fabrication of Floating Epoxy-Based Microlasers

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R6G (1.0 mg), serving as the gain media, was mixed with dichloromethane (0.1 mL, purity 99.7%) and epoxy resin (Araldite 506, 400 mg, from Sigma-Aldrich). Epoxy was chosen because of its thermal stability, transparency, high viscosity and immiscibility with water, which enable it to be a good cavity host material for this work5 (link). The microlasers were fabricated by a GIX^TM Microplotter^TM II from Sonoplot, INC (Fig. 1a), which is a computer controlled system. It consists of a dispenser, a camera for imaging and an ultrasonic vibrator for cleaning. Due to adhesion, a little solution was attached outside the wall of the dispenser after the glass micropipette immersed in the solution (Fig. 1b). When touching the soap water surface, the solution left outside the wall of the dispenser was “pulled” down to the soap water surface and self-assembled to be a circular floating microlaser by the surface tension of water (Fig. 1c–e). The initial radius of the floating microlaser can be controlled by the dispenser size as well as the immersion depth when the dispenser touches the epoxy solution. The soap water, which was exploited to manipulate the surface tension of water, was prepared by mixing 25 mL of water and 8 μL of Mama Lemon (Lion Corporation, Japan).

Yang S., Ta V.D., Wang Y., Chen R., He T., Demir H.V, & Sun H. (2016). Reconfigurable Liquid Whispering Gallery Mode Microlasers. Scientific Reports, 6, 27200.

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