摘要:
Provided is an examination technique that can quickly and reliably examine, from the outside of a container, whether a liquid which fills the container contains an explosive or the like, without being influenced by such things as the light transmissivity or size of the container, or the amount of liquid remaining in the container or the position of a label. In the present invention, a liquid examination device is formed by integrating the following: a near infrared-light examination device that examines whether a liquid which fills a container contains an explosive, an explosive raw material, and/or an illicit drug by projecting near infrared light into the liquid from outside of an optically transparent container, receiving the near infrared light which passed through the liquid or the near infrared light which was scattered by the liquid, and analyzing the absorption spectrum of such light; and an ultrasonic wave examination device that examines whether a liquid which fills a container contains an explosive, an explosive raw material, and/or an illicit drug by receiving the reflected waves of ultrasonic waves projected towards the liquid from outside of a metal container, and analyzing the ultrasonic wave speed of such waves.
摘要:
According to improvement of the receptor layer of various sensors of the type for detecting physical parameters (for example, a surface stress sensor, QCM, and SPR), all of high sensitivity, selectivity, and durability are achieved simultaneously. A porous material or a particulate material, e.g., nanoparticles, is used in place of a uniform membrane which has been conventionally used as a receptor layer. Accordingly, the sensitivity can be controlled by changing the membrane thickness of the receptor layer, the selectivity can be controlled by changing a surface modifying group to be fixed on the porous material or particulate material, and the durability can be controlled by changing the composition and surface properties of the porous material or particulate material.
摘要:
A sensor apparatus according to an embodiment of the present invention includes an element substrate, an element electrode located on an upper surface of the element substrate, an insulating member covering at least a part of the element electrode, and a detection part that includes an immobilizing film located on the upper surface of the element substrate or an upper surface of the insulating member, and performs a detection of a detection object contained in a specimen. A surface roughness of the immobilizing film is smaller than a surface roughness of the element electrode. In a sensor apparatus of other embodiment of the present invention, an amount of oxygen in a surface layer part of the immobilizing film is smaller than an amount of oxygen in a surface layer part of the element electrode.
摘要:
Provided is a fluid state identification device comprising a fluid state identification unit 10 having a sensor part 1 and a support part 2, and a cover 20 surrounding the fluid state identification unit 10. The support part 2 has a front surface part 2F and a rear surface part 2R which are located opposite to each other. The sensor part 1 is located on the front surface part 2F side. The cover 20 has a lower opening 9L and an upper opening 9H. Inside the cover 20, a first fluid flow route running through a front area AF adjacent to the support front surface part and a second fluid flow route running through a rear area AR adjacent to the support rear surface part are formed and located so as to make the fluidity of the fluid in the second fluid flow route higher than the fluidity of the fluid in the first fluid flow route.
摘要:
The invention relates to an apparatus for determining the properties of a medium in the form of a fluid or a soft material, comprising: a) an acoustic waveguide, comprising at least two opposing guide elements (1, 2), which delimit an interior space (5) to be filled with a medium (L) and each of which, with an inner surface (11, 21) thereof, form an interface with the medium (L) upon filling the interior space (5) with the medium (L), b) a transmitter (3) for generating acoustic surface waves (S1) in the waveguide, c) a receiver (4) for receiving acoustic surface waves (S2) which propagate along the waveguide and which receiver can be coupled to an analysis unit for determining physical properties of the medium (L) on the basis of a signal generated by the receiver (4) upon receipt of the acoustic surface waves (S2), and d) a housing (G), in or at which at least the guide elements (1, 2), the transmitter (3) and the receiver (4) are accommodated, wherein at the respective inner surface (11, 21) at least part of the acoustic surface waves (S1) can be converted into volumetric sound waves (S3) of the medium (L) and at least part of the volumetric sound waves (S3) can be converted to acoustic surface waves (S1, S2) of the waveguide. According to the invention, the guide elements (1, 2) are integral with the housing (G) accommodating the transmitter (3) and the receiver (4).
摘要:
The invention relates to a method for investigating a structure and a structure for receiving and/or conducting a liquid or soft medium, the method comprising the steps of: a) exciting acoustic waves in the structure by means of at least one transmitter (3), b) converting at least a part of the energy associated with the acoustic waves (A) excited in the structure (2, 2a, 2b) into volume sound waves (B) of the medium (5), c) reconverting at least a part of the energy associated with the volume sound waves (B) into acoustic wave energy of the structure (2, 2a, 2b) thereby generating acoustic waves in the structure (2, 2a, 2b), d) receiving acoustic waves evoked by the transmitter by at least one receiver (4, 4a, 4b), and e) verifying whether a coating is present on a surface of the structure and/or if a coating is present determining properties of the coating by evaluating a signal generated by the receiver (4, 4a, 4b) upon receipt of acoustic waves evoked by the transmitter (3) and/or verifying whether a level of the medium (5) is below a predetermined value.
摘要:
An in-liquid-substance detection sensor is provided in which size reduction and detection accuracy improvement are realized easily. The sensor includes a) a piezoelectric substrate (12), b) at least two SAW devices (16, 17) provided on one major surface (12a) of the piezoelectric substrate (12) and each having at least one IDT electrode forming a sensing portion, c) outer electrodes (15) provided on the other major surface (12b) of the piezoelectric substrate (12) and electrically connected to the SAW devices (16, 17) through vias (13) extending through the piezoelectric substrate (12), d) a channel-forming member (19) provided on the one major surface (12a) of the piezoelectric substrate (12) so as to surround the SAW devices (16, 17) and a region connecting the SAW devices (16, 17) to each other, thereby forming sidewalls of a channel (30), and e) a protective member (20) bonded to the one major surface (12a) of the piezoelectric substrate (12) with the channel-forming member (19) interposed therebetween, thereby sealing the channel (30), the protective member (20) having at least two through holes (22, 24) communicating with the channel (30).
摘要:
A method of determining a phase separation concentration of a sample substance in a solution, comprises the steps of measuring values of a physical quantity of the solution containing the sample substance with at least one sample substance concentration lower then the phase separation concentration, wherein the physical quantity characterizes an interaction of the solution with sound waves, determining a concentration function representing a dependency of the physical quantity on the sample substance concentration lower then the phase separation concentration, and determining the phase separation concentration as a concentration value at which the concentration function equals a predetermined critical value of the physical quantity of the solution containing the sample substance in a saturated condition. Furthermore, a concentration determining device is described.
摘要:
An ultrasonic wave passes different fuels of different concentrations with different velocities. The present invention provides a detecting and controlling device where, by a non-touching method, a velocity for an ultrasonic wave in a first fuel with a first fuel concentration is measured. The velocity obtained is taken for a comparison with another velocity for the same ultrasonic wave in a fuel with a default fuel concentration so that the first fuel concentration of the fuel can be under controlled. The device is useful for controlling the methanol concentration in a fuel solution delivered to a fuel cell.