Riken Corporation

Sii Nanotechnology Inc.

Pulstec Industrial Co., Ltd.

Satoshi Kawata

Takuo Tanaka

Atsushi Ono

Masato Iyoki

Takayuki Okamoto

Takashi Murakami

Kazuhito Tsukagoshi

Takayuki Hayashi

Jun-ichi Kato

Masahiko Ujiie

Yuika Saito

Yasushi Inoue

Nobuyuki Takeyasu

In a method of producing a metal structure by photoreducing metal ion, a substance capable of suppressing growth of metal crystal is added to a medium in which metal ion is dispersed to prevent growth of the metal crystal produced by photoreduction of the metal ion, thereby processing resolution of a metal structure formed of the metal crystal is improved.

Photoreduction processing method of three-dimensional metal nanostructure

Long-distance transfer of a super-resolution near field can be performed with a wavelength condition of high degree of freedom. Not only an image in same size can be merely transferred, but also a magnified image can be transferred. Thus the processing technique of a near-field image is improved. Small rods are erected at predetermined spacing with one another on a two-dimensional plane. At least the exterior surface of each small rod is made of a predetermined material having a dielectric constant &#x2208;meeting the condition '&#x2208;&#x2266;&#x2212;&#x2208;' where &#x2208;is the dielectric constant of the surrounding medium. The axes of the small rods can be extended to a predetermined direction with respect to the two-dimensional plane. An optical near-field is incidented to one end of each small rod.

Optical near-field distribution transfer device

An optical pickup apparatus comprises an orbicular zone forming lens groupfor forming the section of the laser beam, which is irradiated to an optical disc DK having plural recording layers, into an annular shape, a condenser lensthat converges the reflected beam from the optical disc DK, and a pinhole platehaving formed thereto a pinholewith a size corresponding to a flux diameter of the reflected beam converged by the condenser lens. The orbicular zone forming lens grouprefracts the laser beam irradiated to the optical disc DK so as to form the section of the laser beam into an annular shape in order that the internal diameter of the annular converged flux formed on the pinhole plateby the reflected beam from the recording layers other than the recording layer having an optical spot formed thereon becomes greater than the diameter of the pinhole

Pickup apparatus for multi-layer optical disc

In order to make a reflection coefficient in boundary surface between materials to be zero and permeate 100% of a light independent of a polarization direction, an optical device made of an optical material composed of a metamaterial prepared by arranging a plurality of at least either of electrical resonators or magnetic resonators each being smaller than a wavelength of a light wave in only a predetermined plane, and at least either of the electrical resonators and the magnetic resonators arranged functioning with respect to s-polarization, wherein at least either of the dielectric constant or the magnetic permeability is controlled in response to the function to induce a Brewster phenomenon in the s-polarization.

Optical material, optical device fabricated therefrom, and method for fabricating the same

In a manufacture of a probe for a scattering type near-field microscope, there is provided a method of coating, with a high reproducibility, uniform metal particles efficiently inducing a surface enhanced Raman scattering. It has been adapted such that, in the probe for the scattering type near-field microscope, one part or all of the probe due to an interaction of at least an evanescent field is coated by metal particles which don't mutually adhere and have a particle diameter of 10 nm or larger and 50 nm or smaller in radius of curvature.

Probe for near-field microscope, the method for manufacturing the probe and scanning probe microscope using the probe

Disclosed is a film comprising PMMA and a fluorescent substance having a xanthene skeleton and a lactone ring and/or a fluorescent substance having a xanthene skeleton and a group &#x2014;COOR, where R represents a hydrogen atom or a substituent, capable of forming an intramolecular lactone ring, said fluorescent substances being dispersed in the PMMA. The film is useful as an optical memory.

Growing community of inventors

Wako, Japan

Satoshi Kawata