- technology discovered here
Search Technologies Technology Needs
Browse Technologies
Browse Technology Needs corporate web site
 Tech of the Week
Each week we feature special technologies. Take a moment to view the other Tech of the Week articles, you may find one that meets a present need.
Easily removed anti-oxidation coating for semiconductor wafers allows cleaned wafers to wait between steps for 48 hours or more
Enhanced thermal conductivity and control over thermal isotropy for circuit boards, films, and other polymeric materials used in electronic components
High-capacity, lightweight carbon nanostructures for vehicle and fuel cell use store more hydrogen per unit weight than other methods
High-speed spin-printing alternative to conductive ink-jet or photoresist printing uses functional particles in UHMW matrix
Lightweight, moisture-permeable protective garments substantially impenetrable to hazardous chemical and biological agents
Log 5 antimicrobial hydrogels for hard surfaces, skin creams, and hand sanitizers produces no dermal irritation
Nanometer-scale filter with pore sizes of 10-50nm for syringe, gas, virus filtration
Oracle database performance analysis software replaces manual methods and streamlines execution
Platform system for greenhouse maintenance and repair also applicable to architecture such as glass atria and similar fragile-walled structures
Printable polymeric optical wave guides and light amplifiers offer order-of-magnitude cost savings over micromachining
Simplified route to large volumes of linear alkyl benzenes as precursors to surfactants
Unprecedented moisture-sensitive, color-changing inks for wovens, non-wovens, packaging, and other surfaces
Tech of the Week is special. Click View Listing Details to see the full information on this technology -- even if you're not already a member.
To take full advantage of, Become a Member.
 Archive List
Cholesteric liquid crystal film with excellent half-transparent property and vivid color for display, lighting, and functional ink applications
Portfolio of technologies for comfortable, easy-to-use hearing protection that can increase compliance
Modified fullerenes for electronic assemblies and fuel cells
High-tensile and tear strength nonwoven fabric for packaging and sheet applications
Ultra-low-wear polymer composites for bearing surfaces reduces expense, avoids contamination, reduces weight
More articles...
 Tech of the Week

World's first non-dyed, structurally colored fibers

Nissan Motor Co., Ltd.

Fibers are based on the wing structure of the Morpho butterfly.

MORPHOTEX® fibers are the world’s first non-dyed, nanotechnology-based, structurally colored chromogenic fibers. They use the color principle of a Morpho butterfly. The technology marks a significant advance in the history of dyeing based on the use of natural and artificial dyes.

MORPHOTEX® is an unstained, structurally colored fiber. This technology is based on the biomimetic conception for the microscopic structure of Morpho butterfly’s wings. Thin films of 70 nm thickness consisting either of polyester or nylon are laminated in 61 layers alternatively, and four types of basic colors such as red, green, blue, and violet are allowed to be developed by precisely controlling the layer thickness according to visible wavelength. No dyes or pigments are used. Rather, color is created based on the varying thickness and structure of fibers. Energy consumption and industrial waste are reduced because no dye process needs to be used. Morphotex fibers have wide application; for example, filament, short-cut fiber, and powdery materials (e.g. MORPHOTONE®).

Due to anisotropic characteristics and its glossiness, the fiber is expected to have various applications in a wide range of fields, not limited to fabric or knitting for a general use, but reaching those of painting, cosmetics, and even craft works. MORPHOTEX® is already commercially used for clothing, nail polish, mascara, coating of musical instruments, and fishing rods.

The structurally colored fibers developed in this research have the following properties and features. (Note: 1 dtex is unit for the weight of 1 gram for a 9,000m fiber.)

  • Strength of the yarn is about 3 or 4 g/dtex.
  • Elongation of the filament is about 25 or 45%.
  • Shrinkage (boil-off shrinkage) of the yarn is prepared to be at a relatively low level of 1 to 5%.

The mechanical properties noted below may be sufficient for general uses.

Coloration by optical interference can exhibit compound material properties, including clarity, transparency, and a sensation of depth.

Anisotropic characteristics by which the color changes subtly depending on viewing angle.

Reduction of waste dye solution and the amount of energy that would otherwise be consumed in the dying process as a non-dyed fiber.

Structure of the fiber.

The new fiber is designed for the manufacture of fabrics. Depending on factors such as which dyed fibers are to be combined, which methods are to be applied for spinning and weaving, designs etc., the fabric has great possibilities for developing diverse colors and improving material quality of the fabrics.

This technology is supported by 13 US patents, 12 Japanese patents and 25 European patents. The most recent year of issue is 2003.

Download this Tech of the Week as a PDF

You can download this Tech of the Week as a PDF file that you can share with co-workers. When viewed on a computer with an Internet connection, the PDF includes live links back to and the technology listing.

Network and bookmark

Twitter Bookmark and Share

Want to see more? Tech of the Week is special. Click View Listing Details to see the full information on this technology -- even if you're not already a member.
Want to know more? will confidentially pass your question along to the provider of this technology and get back to you with an answer if it is available. This service is free. Ask the owner a question
Like an introduction? Deal directly with the licensing contact for this technology. You´ll need to provide some minimal information. This service is confidential and free of charge unless noted. Request an introduction
Send an email to a friend or colleague that contains a link to this technology. Email this listing to a friend
Boston, MA, USA       Liverpool, United Kingdom       Tokyo, Japan                  
Find a Technology |  List a Technology |  Insight |  Using this Site |  About Us |  Home |  Customer Support |  Help
Privacy Statement   |   Terms of Use Agreement   |   Technology Abstracts
Copyright © 1999-2015 by, Inc. All Rights Reserved.