Abstract: The purpose of the present invention is to collect a plurality of microscopic objects dispersed in a liquid by light irradiation, and also trap them. A collecting device for bacteria collects a plurality of bacteria dispersed in a sample liquid. The collecting device is provided with a laser beam source that emits laser beam and a honeycomb polymer film constituted so as to be able to hold the liquid. Walls prescribing pores for trapping the plurality of bacteria dispersed in the liquid are formed on the honeycomb polymer film, and also a thin film that includes a material for converting light from the laser beam source to heat is formed on the honeycomb polymer film. The thin film heats the liquid of the sample through the conversion of the laser beam from the laser beam source to heat, thereby causing a convection in the liquid.

Abstract: The purpose of the present invention is to collect a plurality of microscopic objects dispersed in a liquid by light irradiation, and also trap them. A collecting device for bacteria collects a plurality of bacteria dispersed in a sample liquid. The collecting device is provided with a laser beam source that emits laser beam and a honeycomb polymer film constituted so as to be able to hold the liquid. Walls prescribing pores for trapping the plurality of bacteria dispersed in the liquid are formed on the honeycomb polymer film, and also a thin film that includes a material for converting light from the laser beam source to heat is formed on the honeycomb polymer film. The thin film heats the liquid of the sample through the conversion of the laser beam from the laser beam source to heat, thereby causing a convection in the liquid.

Abstract: A cleaning tool for a collection member includes a brush unit and a mount portion. The brush unit includes a bristle and a woven portion into which a root of the bristle is woven so as to be held by the woven portion. The mount portion includes a placement surface on which the woven portion is placed and a securing portion to which the brush unit is bonded. In the cleaning tool for the collection member, the woven portion includes two first outer surfaces that are located at respective ends of the placement surface and that extend parallel to a direction in which the bristle extends. In the cleaning tool for the collection member, the brush unit is secured to the mount portion by bonding a region that includes at least part of each of the two first outer surfaces to the securing portion with an adhesive.

Abstract: There is provided a particle detector that can increase a detection sensitivity to fluorescence emitted from biogenic particles. A particle detector for detecting biogenic particles includes a substrate having a principal surface and configured to collect the biogenic particles on the principal surface, a light emitting element configured to irradiate particles collected on the principal surface with excitation light, and a light receiving element configured to receive fluorescence emitted from the particles when the particles are irradiated with the excitation light from the light emitting element. An optical axis of the Fresnel lens and a ray direction of the excitation light intersect with each other. The principal surface is a mirror surface.

Abstract: A cleaning tool for a collection member includes a brush unit and a mount portion. The brush unit includes a bristle and a woven portion into which a root of the bristle is woven so as to be held by the woven portion. The mount portion includes a placement surface on which the woven portion is placed and a securing portion to which the brush unit is bonded. In the cleaning tool for the collection member, the woven portion includes two first outer surfaces that are located at respective ends of the placement surface and that extend parallel to a direction in which the bristle extends. In the cleaning tool for the collection member, the brush unit is secured to the mount portion by bonding a region that includes at least part of each of the two first outer surfaces to the securing portion with an adhesive.

Abstract: A particle detection device detects a biological particle. The particle detection device includes a collection unit that collects a particle to a collection substrate, a fluorescence detection unit that emits excitation light toward the particle collected on the collection substrate and receives fluorescence emitted from the particle, and a cleaning unit that removes the particle from the collection substrate at a refreshing position separated from a collection/heating position and a detection position. At the collection/heating position, the particle is collected onto the collection substrate by the collection unit. At the detection position, fluorescence is received by the fluorescence detection unit. With such a structure, the particle detection device in which the particle is highly accurately detected is provided.

Abstract: There is provided a particle detector that can increase a detection sensitivity to fluorescence emitted from biogenic particles. A particle detector for detecting biogenic particles includes a substrate having a principal surface and configured to collect the biogenic particles on the principal surface, a light emitting element configured to irradiate particles collected on the principal surface with excitation light, and a light receiving element configured to receive fluorescence emitted from the particles when the particles are irradiated with the excitation light from the light emitting element. An optical axis of the Fresnel lens and a ray direction of the excitation light intersect with each other. The principal surface is a mirror surface.

Abstract: A Fresnel lens includes an incident surface that is flat, and a prism-forming surface that has a plurality of prisms, the prism-forming surface being provided on the side of the Fresnel lens opposite to the incident surface. Each of the prisms has a converging surface that is located on the side away from the optical axis of the Fresnel lens.

Abstract: There is provided a particle detector that can increase a detection sensitivity to fluorescence emitted from biogenic particles. A particle detector for detecting biogenic particles includes a substrate having a principal surface and configured to collect the biogenic particles on the principal surface, a light emitting element configured to irradiate particles collected on the principal surface with excitation light, and a light receiving element configured to receive fluorescence emitted from the particles when the particles are irradiated with the excitation light from the light emitting element. An optical axis of the Fresnel lens and a ray direction of the excitation light intersect with each other. The principal surface is a mirror surface.

Abstract: A Fresnel lens includes an incident surface that is flat, and a prism-forming surface that has a plurality of prisms, the prism-forming surface being provided on the side of the Fresnel lens opposite to the incident surface. Each of the prisms has a converging surface that is located on the side away from the optical axis of the Fresnel lens.

Abstract: A particle detection device detects a biological particle. The particle detection device includes a collection unit that collects a particle to a collection substrate, a fluorescence detection unit that emits excitation light toward the particle collected on the collection substrate and receives fluorescence emitted from the particle, and a cleaning unit that removes the particle from the collection substrate at a refreshing position separated from a collection/heating position and a detection position. At the collection/heating position, the particle is collected onto the collection substrate by the collection unit. At the detection position, fluorescence is received by the fluorescence detection unit. With such a structure, the particle detection device in which the particle is highly accurately detected is provided.

Abstract: There is provided a particle detector that can increase a detection sensitivity to fluorescence emitted from biogenic particles. A particle detector for detecting biogenic particles includes a substrate having a principal surface and configured to collect the biogenic particles on the principal surface, a light emitting element configured to irradiate particles collected on the principal surface with excitation light, and a light receiving element configured to receive fluorescence emitted from the particles when the particles are irradiated with the excitation light from the light emitting element. An optical axis of the Fresnel lens and a ray direction of the excitation light intersect with each other. The principal surface is a mirror surface.

Abstract: In a detection apparatus, an inlet and an outlet are opened and an air introducing mechanism is driven to introduce air to a case, and airborne particles are electrically attracted and held on a collecting jig 12. After introduction, the inlet and outlet are closed, and amount of fluorescence received by a light receiving element resulting from irradiation with light emitted from a light emitting element is measured by a measuring unit. Thereafter, the collecting jig is heated by a heater and the amount of fluorescence after heating is measured by the measuring unit. Based on the amount of change in the amount of fluorescence before and after heating, the amount of microorganisms collected by the collecting jig is calculated at the measuring unit.

Abstract: A light receiving element provides a current signal corresponding to an amount of received light scattered by suspended particles moving at a predetermined speed to a pulse width measurement circuit and a current-voltage conversion circuit via a filter circuit. A pulse width measured from the current signal is converted into a voltage value based on a predetermined relationship by a pulse width-voltage conversion circuit, and is provided to a voltage comparison circuit. The current-voltage conversion circuit converts a peak value of the current signal into a voltage value, and an amplifier circuit amplifies the signal at a predetermined amplification factor and provides the same to the voltage comparison circuit. The voltage comparison circuit uses the voltage value converted from the pulse width as a boundary value, and the suspended particles causing the scattered light are detected as microorganisms when the peak voltage value is smaller than the boundary value.

Abstract: An organic electroluminescent element comprising a hole injection electrode, an electron injection electrode and one kind or more of organic layers including a luminous layer between these electrodes, in which the organic layer includes a layer containing S, and metal or an oxide thereof is doped into the layer.

Abstract: This invention provides a process for accumulating different organic molecular films on oxidized III-V-group compound semiconductor substrates in order to produce a stable, high-quality organic monomolecular film that is three-dimensionally regularly arranged, as well as a process for producing a fine pattern of such organic films. This organic film is formed by immersing a III-V group compound semiconductor substrates in a vessel containing a solution containing phosphonic acid dissolved into a solvent in order to form a self-assembled film, and placing the substrate into a different solution to adsorb metal ions to the surface of the film, or immersing the substrate in a bromide or an acid or alkali solution to denature functional groups, then immersing it in a solution containing organic molecules that are selectively chemically adsorbed to the modified functional groups.