Structural colour printing using a magnetically tunable and lithographically fixable photonic crystal

Kim, Hyoki; Ge, Jianping; Kim, Junhoi; Choi, Sung-Eun; Lee, Hosuk; Lee, Howon; Park, Wook; Yin, Yadong; Kwon, Sunghoon

doi:10.1038/nphoton.2009.141

Cited by 635 publications

(468 citation statements)

References 36 publications

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“…C olloidal crystals exhibit unique optical properties; the size of each colloidal particle is comparable to the wavelength of light, and their periodic arrangement in a colloidal crystal leads to selective diffraction of light, thereby producing structural colours [1][2][3][4] . As the optical properties are determined by the interparticle separation 5 , the photonic properties can be dynamically modulated.…”

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confidence: 99%

Osmotic-pressure-controlled concentration of colloidal particles in thin-shelled capsules

et al. 2014

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Colloidal crystals are promising structures for photonic applications requiring dynamic control over optical properties. However, for ease of processing and reconfigurability, the crystals should be encapsulated to form 'ink' capsules rather than confined in a thin film. Here we demonstrate a class of encapsulated colloidal photonic structures whose optical properties can be controlled through osmotic pressure. The ordering and separation of the particles within the microfluidically created capsules can be tuned by changing the colloidal concentration through osmotic pressure-induced control of the size of the individual capsules, modulating photonic stop band. The rubber capsules exhibit a reversible change in the diffracted colour, depending on osmotic pressure, a property we call osmochromaticity. The high encapsulation efficiency and capsule uniformity of this microfluidic approach, combined with the highly reconfigurable shapes and the broad control over photonic properties, make this class of structures particularly suitable for photonic applications such as electronic inks and reflective displays.

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confidence: 99%

Osmotic-pressure-controlled concentration of colloidal particles in thin-shelled capsules

et al. 2014

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“…Electrically tunable photonic crystals can clearly provide electronic displays with unique properties [12][13][14]. The photonic crystal materials can reflect colors having a wavelength that is voltage tunable throughout the visible range, without the need for other color filter elements.…”

Section: Photonic Crystalmentioning

confidence: 99%

REVIEW OF PAPER-LIKE DISPLAY TECHNOLOGIES (Invited Review)

Bai¹,

Hayes²,

Jin³

et al. 2014

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Abstract-With the advancement of wireless networks and cloud computing, people are becoming increasingly surrounded by a variety of displays -rich electronic devices: TV, Phone, Pad, Notebook and other portable or wearable devices. These electronic products put high demands on the quality of the visual interface. Paper-like displays are reflective and do not require a backlight. They have received much attention after electrophoretic-based electronic paper displays were commercialized in 2004. Paper-like displays combine excellent reading experience with ultra-low power consumption. In particular, their outdoor readability is superior to transmissive liquid crystal displays (LCDs) and organic light emitting devices (OLEDs). In this paper, we give an overview on various paper-like display technologies with emphasis of the status and future development of electrophoretic display and electrofluidic display principles. We focus on both technologies because electrophoretic displays have been commercialized successfully, and electrofluidic display has high potential to deliver video and full color.

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“…After exposure to ultraviolet (UV) light at different exerted magnetic fields locations, the chain-like CNCs can be frozen in the solidified resin instantaneously, remaining the periods of the chains undistorted and accomplishing high-resolution color pattern fabrication (Fig. 6(d)) [57].…”

Section: Variationmentioning

confidence: 99%