Nippon Sheet Glass Company, Limited

Kanagawa Academy of Science and Technology

Other

Nsg Techno-research Co., Ltd.

Akihiko Hattori

Jun Yamaguchi

Takehiko Kitamori

Manabu Tokeshi

Hiroaki Tada

Koji Shimoda

Masahiro Hirata

Akira Fujisawa

Toshiaki Mizuno

Tsuyoshi Otani

Toshiya Ito

Takashi Fukuzawa

Kazuhiro Doushita

Yukio Sueyoshi

Takashi Sunada

Masahiro Morishita

Takao Miwa

Mitsugi Yoshiyagawa

Hiroyuki Tamenori

A microchemical system according to which measurement can be carried out with high sensitivity. The microchemical systemhas a two-wavelength multiplexing device in which gradient index rod lensesandare connected together at an end face of each thereof and a dielectric multi-layer film filteris formed between these end faces. Exciting light and detecting light is multiplexed by the two-wavelength multiplexing device, and then the exciting light and the detecting light are guided to an optical fiber unitthrough an optical fiberwith a single mode. The optical fiber unithas built therein a gradient index rod lensat a leading end thereof, and the exciting light and the detecting light are irradiated onto a sample from the gradient index rod lens

Microchemical system, and photothermal conversion spectroscopic analysis method

A fluorescence analysis optical multiplexer/demultiplexer, a fluorescence analysis optical module, a fluorescence analyzer, a fluorescence/photothermal conversion spectroscopic analyzer, and a fluorescence analysis chip, according to which LIF analysis can be carried out easily and with high sensitivity, and moreover photothermal conversion spectroscopic analysis can be carried out easily and simultaneously with the LIF analysis. A microchemical systemas the fluorescence analyzer is comprised of a fluorescence analysis optical module, a probethat condenses exciting light onto a sample solution in a channelinside a fluorescence analysis chip, and a sample stageon which the fluorescence analysis chipis mounted. The fluorescence analysis optical moduleis comprised of an exciting light sourcethat outputs exciting light of dominant wavelength &#x3bb;, a fluorescence analysis optical multiplexer/demultiplexerfor use in the fluorescence analyzer which analyzes fluorescence of dominant wavelength &#x3bb;(&#x3bb;&#x3e;&#x3bb;) emitted from the sample upon the sample being irradiated with the exciting light via the probe, a detectorthat receives the fluorescence, an optical fiberthat connects the fluorescence analysis optical multiplexer/demultiplexerto the exciting light source, an optical fiberthat connects the fluorescence analysis optical multiplexer/demultiplexerto the probe, and an optical fiberthat connects the fluorescence analysis optical multiplexer/demultiplexerto the detector. The channelthrough which the sample solution is passed is coated with a reflective metal film

Fluorescence analysis optical multiplexer/demultiplexer, fluorescence analysis optical module, fluorescence analyzer, fluorescence/photothermal conversion spectroscopic analyzer, and fluorescence analysis chip

There is provided a microchemical system which dispenses with the optical axis alignment and positioning of the focal point of the detecting light and that of the exciting light, and is capable of carrying out measurement with high sensitivity. The microchemical system includes a channel-formed plate-shaped member containing a sample, an exciting light source that irradiates exciting light onto the sample via a converging lens, a detecting light source that irradiates detecting light onto a thermal lens formed within the sample by the irradiated exciting light, via the converging lens, and detecting means for detecting the irradiated detecting light via the formed thermal lens. The exciting light source and the detecting light source are connected to the converging lens via an optical fiber for propagating the exciting light and the detecting light to the converging lens. The converging lens is fixed to the channel-formed plate-shaped member, and the optical fiber has a joint part capable of disconnecting the exciting light source and the detecting light source from the converging lens.

Microchemical system

A microchemical system is provided, which can improve the working efficiency of the user. In the microchemical system, a plate-shaped elementthat constitutes an optical unithas an optical wave guide path, which acts as an optical path for exciting light and detecting light. An irradiation lensis disposed at an end of the optical wave guide pathdownstream in the direction of travel of the exciting light and the detecting light, and a channelis located downstream of the irradiation lens, through which a liquid containing a sample flows. A detectoris disposed at an end of the plate-shaped elementdownstream of the channeland detects the detecting light for analysis of the sample.

Microchemical system and photothermal conversion spectroscopic analysis method implemented by the system

There is provided that enables high-sensitivity analysis to be carried out, and a photothermal conversion spectroscopic analysis apparatus that is compact in size and is able to implement the photothermal conversion spectroscopic analysis method. Exciting light and detecting light are convergently irradiated onto the sample by a converging lens. The sample is analyzed using a change in intensity of the detecting light due to refraction upon passing through the thermal lens produced through the convergent irradiation of the exciting light. A molar absorption coefficient of the sample at a wavelength of the exciting light is a predetermined number of times greater than a molar absorption coefficient of the sample at a wavelength of the detecting light.

Photothermal conversion spectroscopic analysis method, and photothermal conversion spectroscopic analysis apparatus for carrying out the method

It is an object to provide a photothermal conversion spectroscopic analysis method that enables measurement to be carried out with high sensitivity, and a photothermal conversion spectroscopic analysis apparatus that carries out the method. The photothermal conversion spectroscopic analysis apparatus is comprised of an exciting light source, a chopperthat is disposed close to the exciting light sourcein the optical path of exciting light emitted from the exciting light source, a mirrorthat changes the direction of travel of the exciting light, a detecting light source, a dichroic mirrorthat has detecting light from the detecting light sourceincident thereon and makes the exciting light and the detecting light coaxial, a lensthat has a suitable amount of chromatic aberration, and a holderthat holds the lenssuch as to enable adjustment along three axes.

There is provided a gradient index rod lens unit having a desired chromatic aberration. The gradient index rod lens unit is comprised of two gradient index rod lensesandwith different chromatic aberrations and the entire lengths thereof adjusted, which are disposed in series with the optical axes thereof in alignment. The chromatic aberration of the gradient index rod lens unit can be set to a value falling within chromatic aberration ranges inherently possessed by the respective gradient index rod lensesand

Gradient index rod lens unit and microchemical system having the same

A microchemical system is provided, which can improve the working efficiency of the user and can be designed compact in size. The microchemical system is provided with an optical fiberwith a gradient index rod lensmounted on an end thereof. The lens-possessing optical fiberis comprised of an optical fiberthat transmits exciting light and detecting light in the single mode, and a ferrulefor expanding the outer diameter of the optical fiberto the same value as that of the gradient index rod lens. The gradient index rod lensand the optical fiberare rigidly joined together by means of a sleeve

A glass capillary array for fluorescence analysis is provided which is capable of preventing reduction of the transmittance of a laser beam through the glass capillaries during electrophoretic DNA fluorescence analysis, and a method of manufacturing the glass capillary array. The glass capillary array for fluorescence analysis is comprised of a plurality of glass capillaries each having a rectangular cross section and having an internal hole formed therein, and arranged in a row along a direction of irradiation of a laser beam for fluorescence analysis. The glass capillary array has a fluorescence analysis section comprising a portion of each of the glass capillaries positioned in a region including an optical axis of the laser beam and a vicinity thereof, and the glass capillaries are joined together substantially into a single body using a transparent material in at least the fluorescence analysis section.

Glass capillary array for fluorescence analysis and manufacturing method thereof

A glass capillary for DNA analysis is provided, which allows the DNA detection efficiency of a DNA analyzer that uses electrophoresis to be increased, and allows the DNA analyzer to have a simple structure. A glass capillary for DNA analysis has an internal hole, and each of the glass capillary and the internal hole has a rectangular cross section. Since the glass capillary and the internal hole each have a rectangular cross section, scattering of the laser beam at the surfaces of the glass capillary can be prevented and hence the transmittance of the laser beam can be increased. As a result, the detection efficiency of the electrophoretic DNA analyzer can be increased, and moreover the analyzer can be given a simple structure.

Glass capillary for DNA analysis and manufacturing method thereof, and DNA analyzer that uses the glass capillary

On a glass sheet, undercoating layers and a transparent conductive film containing tin oxide as the main component are formed in this order. The surface of the transparent conductive film is provided with roughness including convex portions and concave portions. The convex portions have a mean diameter in a range between 0.05 &mgr;m and 0.3 &mgr;m and include five convex portions or less with diameters of at least 0.5 &mgr;m per 100 &mgr;m of the surface. On the transparent conductive film, a photovoltaic unit and a back electrode are formed, thus obtaining a photoelectric conversion device.

Substrate for photoelectric conversion device, and photoelectric conversion device using the same

A transparent layered product in which the ratio of a refractive-index transition layer at the surface of a coating film is set to be a suitable ratio for increasing light transmittance is provided. In a coating film with a rough surface formed on a glass sheet, the thickness of a transition layer in which the refractive index varies continuously in its thickness direction is set to be in a range between 13% and 65% of the thickness of a layer having a substantially constant refractive index in the coating film.

Transparent layered product and glass article using the same

The present invention relates to An anti-fogging and stain-prevented glass article having an alkali shut-off film and a photocatalytic film in the order laminated on the surface of glass substrate, in which dents and projections having an arithmetical mean roughness (Ra) from 1.5 to 80 nm and mean interval (Sm) of dents and projections from 4 to 300 nm are formed thereon, and to An anti-fogging and stain-prevented glass article having an alkali shut-off film, a photocatalytic film, and a silicon oxide monocomponent equivalent layer or a layer of organosilane including at least one kind of functional group selected from polyalkyleneoxide group, alkyl group, alkenyl group and aryl group in its molecules or its hydrolyzed substance, laminated in the order on the surface of a glass article. The abovementioned anti-fogging and stain-prevented glass article can be used for window glasses of automobiles and buildings, and glasses, etc.

Nonfogging and stainproof glass articles

Fluorine contained within a photocatalyst layer containing titanium oxide and other metallic oxide semiconductors increases the metallic oxide's photocatalytic activity. The described photocatalyst may be in the form of either film, flake, particulate, or fiber. In addition, it can be used for coating the surface of a base material of various forms, such as sheet, film, flake, particulate, bar, or fiber. When using a base material that has an alkaline-containing glass composition, establishing a fluorine-containing layer, such as a layer of fluorine-containing silicon dioxide and other metallic oxide, between the photocatalyst film and the base material can prevent the deterioration of photocatalytic activity of the photocatalyst layer. The fluorine-containing layer functions as an alkaline barrier that controls the diffusion and migration of alkali metallic ions in the glass fibers, such as Na ions, into the photocatalyst layer. Inorganic fiber- and glass sheet-based photocatalyst bearing materials have an excellent capability to decompose rarefied harmful organic gases, and are suitable for use as interior wall and air filters in super clean enclosed spaces and conveyance spaces for semiconductor production, clean rooms for various other purposes, and office and residential buildings, and for other purposes including air cleaning, antibacterial action, anti-fouling action, and defogging of clear sheets (maintaining hydrophilicity).

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Osaka, Japan

Akihiko Hattori