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MICROFLUIDIC SYNTHESIS OF MAGNETOCHROMATIC MICROSPHERES UTILIZING MAGNETIC SELF-ASSEMBLY AND PHOTOPOLYMERIZATION PROCESS

Junhoi Kim, Young‐Hoon Song, Howon Lee, Wook Park, Hyoki Kim, Sunghoon Kwon

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Abstract

This paper reports a microfluidic synthesis method for manufacturing magnetochromatic microspheres. The magnetochromatic microspheres are magneto-responsive color-changing microparticles in which embedded magnetic nanoparticles diffract different colors of light depending on their nanoscale interparticle spacing within their one-dimensional (1D) arrangements [1]. Our microfluidic approach in combination with magnetic self-assembly and photopolymerization process allows us to synthesize the magnetochromatic microspheres with desired size and color. By virtue of dynamic color-tuning capability during the synthesis, microspheres with heterogeneous color distribution can also be obtained. After synthesis color modulation of the microspheres is also possible through rotation of the microspheres.

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What this paper is about

This paper reports a microfluidic synthesis method for manufacturing magnetochromatic microspheres. The magnetochromatic microspheres are magneto-responsive color-changing microparticles in which embedded magnetic nanoparticles diffract different colors of light depending on their nanoscale interparticle spacing within their one-dimensional (1D) arrangements [1]. Our microfluidic approach in combination with magnetic self-assembly and photopolymerization process allows us to synthesize the magnetochromatic microspheres with desired size and color. By virtue of dynamic color-tuning capability during the synthesis, microspheres with heterogeneous color distribution can also be obtained. After synthesis color modulation of the microspheres is also possible through rotation of the microspheres.

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Available abstract

This paper reports a microfluidic synthesis method for manufacturing magnetochromatic microspheres. The magnetochromatic microspheres are magneto-responsive color-changing microparticles in which embedded magnetic nanoparticles diffract different colors of light depending on their nanoscale interparticle spacing within their one-dimensional (1D) arrangements [1]. Our microfluidic approach in combination with magnetic self-assembly and photopolymerization process allows us to synthesize the magnetochromatic microspheres with desired size and color. By virtue of dynamic color-tuning capability during the synthesis, microspheres with heterogeneous color distribution can also be obtained. After synthesis color modulation of the microspheres is also possible through rotation of the microspheres.

Key concepts: Microfluidics, Microsphere, Photopolymer, Materials science, Nanotechnology, Self-assembly, Magnetic nanoparticles, Flow focusing

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MICROFLUIDIC SYNTHESIS OF MAGNETOCHROMATIC MICROSPHERES UTILIZING MAGNETIC SELF-ASSEMBLY AND PHOTOPOLYMERIZATION PROCESS — Research Paper | ScholarLens