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Butterfly-Inspired Fibers Create Diverse Fabric Colors

Much like the Morpho butterfly’s microscopic wing structure, MORPHOTEX® fibers have various thicknesses and structures, which then determine specific colors. Thin films of 70-nm thickness, consisting either of polyester or nylon, are laminated in 61 alternating layers. By precisely controlling the layer thickness according to visible wavelength, four types of basic colors, including red, green, blue, and violet, can be developed. No dyes or pigments are used.

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Identification of Signal Arrival Direction in a Noise Environment

A processing methodology enables quick and accurate identification of signal arrival direction. The improved mathematical concept allows unified detection, even with the cumbersome environment noise that afflicts conventional methods. It will be applied to devices that assume the signal arrival direction with a sensor array. The proposed method works best when there are fewer noise sources than the receivers constituting the array, and when the noise source exists in the same direction of the signal source.

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Facing for Acoustic Batts that Contain Melt-Film Fibrillation

Melt-Film Fibrillation (MFF) technology produces a facing for acoustic batts for vehicle sound insulation that offers equivalent or superior sound-deadening performance at reduced weight and cost. Equivalent weights of MFF fibers produce substantially enhanced sound insulation over conventional batts incorporating melt-blown, polypropylene fibers. The submicron fibers of MFF increase sound impedance, with significant performance improvements realized in the frequencies between 3000 Hz and 5000 Hz.

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Adaptive Membranes for Comfortable Protective Wear

This dual-membrane technology provides apparel with a high degree of comfort, passing air and water vapor easily. The garment (or survival enclosure) can instantly be made impervious with the flip of a switch on the belt-mounted power pack. The garment can be toggled between high comfort and high protection modes quickly and repeatedly, depending on the environmental conditions. A voltage is required to maintain one of the states. These garments are ideal for situations where the environment is usually normal but can rapidly change to hazardous, such as first responders, HAZMAT teams, hospital personnel, militia, or chemical plant workers.

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Soft-Feel Grain Surface Treatment for Hard Plastic Mimics Sensation on Fingertips

This technology gives hard-surface plastics a soft and moist feel by imposing a “grain” or texturing onto the surface. It has application in automotive interiors, household utensils, electronics, mobile phones, and other locations where a hard plastic surface would benefit from feeling softer. The science is based on the study of the fingerprint. The more surface area of the fingertip that touches a surface, the more the brain interprets that sensation as “soft” and “moist.” The soft-feel grain surface treatment consists of a precise series of tiny bumps and larger bumps designed to increase the area of the surface in contact with the fingertip.

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Development of Organic Materials that Melt by Light Irradiation

AIST has developed organic materials that melt from solid to liquid with only the irradiation of light, without heating, and can be restored to their original solid state. Unlike irreversible photosensitive resins, which cannot be restored to their original state after their state has changed once, the developed organic materials undergo state transitions by photoisomerization. These synthesized compounds have a molecular weight of about 1,100-1,700 and undergo photoisomerization even in crystals, so that they change from solid state to liquid state by light.

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Flexible Absorbent Binder for Packaging Applications

Kimberly-Clark Corporation Flexible Absorbent Binder (FAB) is a transparent polymer cured from a water-based solution. It is ideal for maintaining in-package humidity during shelf life and transport without drying out the package contents. FAB can make a new product with unique liquid-and vapor-handling capabilities, or it can be incorporated into other products and packaging that need humidity control or dispensing. It acts as a binder and does not require additional binders to hold it in place on a suitable substrate.

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