Abstract: To provide an analysis device capable of quantitatively measuring the concentration of a substance without diluting a sample containing the substance to be analyzed, detection portions (5) that detect the substance in different concentration ranges are formed in a plurality of minute flow paths (2), respectively, and the concentration of the substance to be detected can be obtained within a calibration range in any one of the detection portions (5).

Abstract: A microanalysis chip includes: a main flow channel (1) having one end connected to an open hole (7) open to an outside; a first introduction flow channel (2) through which a first liquid (40) is introduced into the main flow channel (1); a first discharge flow channel (3) through which a first liquid (40) introduced into the main flow channel (1) is discharged; and a reacting and detecting section (13) which, inside of the main flow channel (1), analyzes a property of the first liquid (40) introduced into the main flow channel (1), the first introduction flow channel (2) and the first discharge flow channel (3) being both provided at a side of the main flow channel (1) that is opposite to the open hole (7) with respect to the reacting and detecting section (13). Therefore, a solution is quantitatively weighed out with a simple configuration, and the solution thus weighed out is analyzed with the solution kept charged into a flow channel.

Abstract: There is provided an electrophoresis device including an insulator that includes: a first-separating-medium storing section for storing therein a first separating medium; a first opening and a second opening that are in communication with the first-separating-medium storing section and for defining a direction of separation on the first separating medium; and a third opening that is covered with a penetrable insulating thin film, wherein the first separating medium storing section is in communication with outside via the first opening and the second opening. There is also provided an electrophoresis apparatus including the electrophoresis device. This realizes an electrophoresis apparatus, and a device therefor, that enables an operator to sample separated proteins without ever making contact with the electrophoresed gel, and that can easily be used with various types of analyses, thereby improving convenience of electrophoresis.

Abstract: There is provided a storage layer (13) between storage layers (11), (15). The storage layer (13) produces a relatively large spherical aberration for a protection layer thickness error. Information is written to or read from the storage layer (13) with a beam of light having a second wavelength. Information is written to or read from the storage layers (11), (15) with a beam of light having a first wavelength (longer than the second wavelength). Accordingly, a multi-format optical storage medium is realized on which information can be recorded or reproduced with a single objective lens. Also, an optical pickup is realized which is capable of recording or reproducing information on the multi-format optical storage medium.

Abstract: An optical disk includes a plurality of disk sheets which are laminated, and each of which has a recording face on one of the surfaces and a flat back surface, wherein the plurality of disk sheets are laminated by adhesive layers in such a manner that between adjacent two disk sheets, a back surface of one of the disk sheets, on the opposite side of the surface where the recording face is formed, faces the disk surface of the other disk sheet. The foregoing structure realizes an optical disk of desirable recording/reproducing characteristics, which is flat and has a fixed interval between recording faces, and which permits the problems of coma aberration, spherical aberration, etc., to be suppressed.

Abstract: Provided is a microanalytical chip that is capable of controlling sequential sending of a plurality of solutions of mutually different viscosities and interfacial tensions. The microanalytical chip includes: a main conduit including a detecting portion and/or a reacting portion; a first introduction conduit and a second introduction conduit for introducing a solution to the main conduit from a further upstream position than the detecting portion and the reacting portion; and a third introduction conduit for introducing a. solution to the main conduit, wherein W2<W<Wm and W?W1 are satisfied, wherein W1 denotes a minimum groove width of the first introduction conduit, W2 denotes a minimum groove width of the second introduction conduit, W3 denotes a minimum groove width of the third introduction conduit, and Wm denotes a minimum groove width of the main conduit.

Abstract: By using an existing, relatively inexpensive manufacturing device, micropatterns (e.g. guiding grooves, prepits) having such track pitch and pit pitch that are smaller than the diameter of a light spot are formed more finely. There are provided at least two layers, i.e. (i) a resin substrate and (ii) a depressed part inducing layer made of dielectric material or metal oxide. A light beam is radiated and focused onto the depressed part inducing layer so as to form pit parts and/or guiding grooves on irradiated parts of the resin substrate. The depressed part inducing layer is then removed, so as to expose the pit parts and/or guiding grooves.

Abstract: By using an existing, relatively inexpensive manufacturing device, micropatterns (e.g. guiding grooves, prepits) having such track pitch and pit pitch that are smaller than the diameter of a light spot are formed more finely. There are provided at least two layers, i.e. (i) a resin substrate and (ii) a depressed part inducing layer made of dielectric material or metal oxide. A light beam is radiated and focused onto the depressed part inducing layer so as to form pit parts and/or guiding grooves on irradiated parts of the resin substrate. The depressed part inducing layer is then removed, so as to expose the pit parts and/or guiding grooves.

Abstract: A sample separation/adsorption appliance (100) includes: a first buffer solution tank (1) in which a first electrode (12) is to be disposed; a second buffer solution tank (2) in which a second electrode (22) is to be disposed; and a sample separating section (3) in which a separation medium (33) is to be contained. The sample separating section (3) has a first opening (31) opening into the first buffer solution tank (1) and a second opening (32) opening into the second buffer solution tank (2). The appliance (100) further includes second electrode fixing means (4) for disposing the second electrode (22) oppositely to the second opening (32). Preferably, the appliance (100) further includes adsorption member holding means (5) for holding an adsorption member (6) between the second opening (32) and the second electrode (22) to adsorb sample components which was discharged from the second opening (32) onto the adsorption member (6).

Abstract: There is provided a storage layer (13) between storage layers (11), (15). The storage layer (13) produces a relatively large spherical aberration for a protection layer thickness error. Information is written to or read from the storage layer (13) with a beam of light having a second wavelength. Information is written to or read from the storage layers (11), (15) with a beam of light having a first wavelength (longer than the second wavelength). Accordingly, a multi-format optical storage medium is realized on which information can be recorded or reproduced with a single objective lens. Also, an optical pickup is realized which is capable of recording or reproducing information on the multi-format optical storage medium.

Abstract: There is provided an electrophoresis device (100) including an insulator (10) that includes: a first-separating-medium storing section (4?) for storing therein a first separating medium (4); a first opening (7) and a second opening (8) that are in communication with the first-separating-medium storing section (4?) and for defining a direction of separation on the first separating medium (4); and a light-transmissive portion for observing inside of the first-separating-medium storing section (4?) from outside, wherein the light-transmissive portion is covered with an anti-reflective layer (3). There is also provided an electrophoresis apparatus including the electrophoresis device (100). In one embodiment of the electrophoresis device (100), the anti-reflective layer 3 is not provided, and a light absorbing layer is provided opposite the light-transmissive portion with the first-separating-medium storing section in between.

Abstract: There is provided an electrophoresis device (100) including an insulator (10) that includes: a first-separating-medium storing section (4?) for storing therein a first separating medium (4); a first opening (7) and a second opening (8) that are in communication with the first-separating-medium storing section (4?) and for defining a direction of separation on the first separating medium (4); and a third opening (9) that is covered with a penetrable insulating thin film (3), wherein the first separating medium storing section (4?) is in communication with outside via the first opening (7) and the second opening (8). There is also provided an electrophoresis apparatus including the electrophoresis device (100). This realizes an electrophoresis apparatus, and a device therefor, that enables an operator to sample separated proteins without ever making contact with the electrophoresed gel, and that can easily be used with various types of analyses, thereby improving convenience of electrophoresis.

Abstract: A method for forming micropatterns includes forming a thin film consisting of a single layer or of plural layers on a substrate, irradiating an energy beam to the thin film to elevate the temperature of a region to a predetermined temperature or higher to thereby modify the region of the thin film, and patterning the thin film at least in such a manner to leave over the modified region.

Abstract: An optical disk includes a plurality of information units, each of which has a pit array made up of a phase pit on an information track and phase pits surrounding the phase pit. With this structure, information can be recorded at high density, and recorded information can be reproduced from the optical disk under stable conditions.

Abstract: A method for forming micropatterns includes forming a thin film consisting of a single layer or of plural layers on a substrate, irradiating an energy beam to the thin film to elevate the temperature of a region to a predetermined temperature or higher to thereby modify the region of the thin film, and patterning the thin film at least in such a manner to leave over the modified region.

Abstract: A method for forming micropatterns includes forming a thin film consisting of a single layer or of plural layers on a substrate, irradiating an energy beam to the thin film to elevate the temperature of a region to a predetermined temperature or higher to thereby modify the region of the thin film, and patterning the thin film at least in such a manner to leave over the modified region.

Abstract: By using an existing, relatively inexpensive manufacturing device, micropatterns (e.g. guiding grooves, prepits) having such track pitch and pit pitch that are smaller than the diameter of a light spot are formed more finely. There are provided at least two layers, i.e. (i) a resin substrate and (ii) a depressed part inducing layer made of dielectric material or metal oxide. A light beam is radiated and focused onto the depressed part inducing layer so as to form pit parts and/or guiding grooves on irradiated parts of the resin substrate. The depressed part inducing layer is then removed, so as to expose the pit parts and/or guiding grooves.

Abstract: An optical disk includes a plurality of disk sheets which are laminated, and each of which has a recording face on one of the surfaces and a flat back surface, wherein the plurality of disk sheets are laminated by adhesive layers in such a manner that between adjacent two disk sheets, a back surface of one of the disk sheets, on the opposite side of the surface where the recording face is formed, faces the disk surface of the other disk sheet. The foregoing structure realizes an optical disk of desirable recording/reproducing characteristics, which is flat and has a fixed interval between recording faces, and which permits the problems of coma aberration, spherical aberration, etc., to be suppressed.

Abstract: A magneto-optical storage medium includes an interference layer, a magnetic domain expansion layer, an intermediate layer, a magnetic masking layer, a recording layer, and a protection layer which are sequentially formed on a substrate. The magnetic domain expansion layer produces a smaller frictional force due to wall coercivity than do the other magnetic layers. The intermediate layer has the Curie temperature TC2 which is lower than those of the other magnetic layers. The magnetic masking layer is in a perpendicular magnetization state at temperatures that are in a proximity of TC2, and changes into an in-plane magnetization state at temperatures that are higher than the proximity of TC2. The recording layer produces a higher coercive force than those produced by the magnetic domain expansion layer at room temperature.

Abstract: In order to provide a magneto-optical recording medium which can select a single recording magnetic domain in the recording layer accurately and expand and transfer the same to the reproducing layer, the magneto-optical recording medium is arranged in the following manner. That is, the magnetization direction of the reproducing layer is in-plane at room temperature and shifts to perpendicular at or above a predetermined temperature Ttrans.. The recording layer is a magnetic layer which is magneto-statically coupled to the reproducing layer and shows the perpendicular magnetization up to its Curie temperature. The magnetic mask layer is provided between the recording layer and reproducing layer, and the magnetization thereof is reduced to 0 (zero) at or above a predetermined temperature (Tm) which is at or above Ttrans.. The magnetization of the magnetic mask layer is larger than that of the recording layer at least in a range between room temperature and Ttrans..