By Jun Taniguchi, Hiroshi Ito, Jun Mizuno, Takushi Saito

Nanoscale development move expertise utilizing molds is a speedily advancing zone and one who has noticeable a lot fresh awareness because of its capability to be used in nanotechnology industries and purposes. even though, as a result of those quick advances, it may be tricky to maintain with the technological developments and the newest state-of-the-art equipment. so as to totally comprehend those pioneering applied sciences, a entire knowing of the fundamental technological know-how and an outline of the concepts are required.

Nanoimprint expertise: Nanotransfer for Thermoplastic and Photocurable Polymers covers the newest nanotransfer technology according to polymer behaviour. Polymer fluid dynamics are defined intimately, and injection moulding, nanoimprint lithography and micro touch printing also are mentioned. state-of-the-art nanotransfer applied sciences and functions also are thought of and destiny tendencies in are examined.

Key features:
• Covers the basics of nanoimprint technology
• provides state of the art suggestions and applications
• offers business examples and describes the mildew fabrication process
• Considers nanotransfer of thermoplastics via simulation
• Describes the layout and review of UV curable polymer

Nanoimprint expertise: Nanotransfer for Thermoplastic and Photocurable Polymers is a complete reference for engineers in addition to graduate and undergraduate scholars, and is an invaluable resource of data for an individual trying to increase their figuring out of nanotransfer mechanisms and methods.

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Extra info for Nanoimprint Technology: Nanotransfer for Thermoplastic and Photocurable Polymer

Sample text

1 Importance of Viscosity in Thermal Imprinting Process In the thermal imprinting process, a stamp having microstructure on the surface is mechanically pushed against a substrate of thermoplastic material. From the microscale viewpoint, it can be said that the rigid structure of the stamp penetrates into the substrate of the softened polymeric material. The progress of the penetration is affected not only by the viscosity of the polymeric material, but also by the structural geometry and density of the stamp.

A numerical simulation will be an important tool in solving this kind of difficulty. Estimation at the size of micrometers or Nanopattern Transfer Technology of Thermoplastic Materials 41 nanometers might be realizable by utilizing the simulation well. Moreover, information regarding the processing window in an actual process could be obtained by calculating the distributions of the temperature and pressure in the entire stamp. The first step in numerical simulation of the imprinting process is explained in the following section.

First, it explains data from the left side: T1 is the cold side; T7 is the hot side. The relaxation curve of the modulus obtained from about 10 to 1000 s on the horizontal scale is shown. The viscoelastic behavior of a polymer depends on the space available to exercise heat inside the molecular chains freely (free volume). In the low-temperature region, a polymer does not show elastic behavior because of the small free volume; this condition is designated as the glassy state. 2, T1 corresponds to this state.

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