Abstract: A horizontal high-speed testing device for a spiral seal of a cone bit bearing is provided. The device comprises a shaft, a spiral sleeve and a cone. The spiral sleeve is in threaded connection to the cone. Sealing threads are provided on an inner diameter of the spiral sleeve. Both the spiral sleeve and the cone are sheathed on the shaft. By the testing device of the present invention, a spiral seal structure for a cone bit bearing is simulated, and the cone drives the spiral sleeve to rotate; the sand draining performance of the spiral seal can be tested in two ways, i.e., by measuring the time required to drain the sand-containing liquid and by measuring the weight of drained sand, so that the smooth production and application of spiral seal products can be assured.

Abstract: A leak detection and recovery system for use with DRA equipment. The system is intended to reduce the risk of a chemical release into the environment, namely the soil, ground water, and waterways. The system may provide clean collection of leaked DRA, early detection of DRA leaks, immediate notification of DRA leaks, and re-use of leaked DRA through clean recovery with no hazardous waste disposal.

Abstract: The invention relates to an apparatus (2) for detecting imaging quality of an optical system (4) with at least one lens (6) or lens group. The apparatus (2) includes an MTF measuring apparatus (10) for measuring a modulation transfer function at a plurality of field points in the field of view of the optical system (4), and a centering measuring apparatus (18) for measuring a centered state of the optical system (4). Furthermore, the invention relates to a method for detecting imaging quality of an optical system (4) having such a apparatus (2).

Abstract: A connector inspector includes a microscope assembly, a supporting tray, a main frame, and a fitting tip. The microscope assembly is placed within the supporting tray with a bottom cylindrical protrusion inserted into a base plate of the supporting tray, and the supporting tray is coupled with the main frame with a pair of pivoting joints. The microscope assembly is horizontally biased by a spring and an adjusting knob, set between the main frame and the microscope assembly. The microscope assembly is vertically biased by a spring and an adjusting knob, set between the main frame and the microscope assembly. Thus, the microscope assembly may be swung to shift the imaging axis in two dimensions. The design of enables the inspector to be used with just one hand. See-through windows are formed on the sides of the fitting tip for monitoring the shifting of the imaging axis.

Abstract: According to examples, a Brillouin and Rayleigh distributed sensor may include a first laser source to emit a first laser beam, and a second laser source to emit a second laser beam. A photodiode may acquire a beat frequency between the two laser beams. The beat frequency may be used to maintain a predetermined offset frequency shift between the two laser beams. A modulator may modulate the first laser beam. The modulated first laser beam is to be injected into a device under test (DUT), A coherent receiver may acquire a backscattered signal from the DUT. The backscattered signal results from the modulated first laser beam injected into the DUT. The coherent receiver may use the second laser beam as a local oscillator to determine Brillouin and Rayleigh traces with respect to the DUT based on the predetermined offset frequency shift.

Abstract: A method for foreign object debris detection in a gas turbine engine may comprise receiving, by a controller, a plurality of master configuration parameters, receiving, by the controller, a plurality of individual configuration parameters in response to the plurality of master configuration parameters, receiving, by the controller, a first time-series data from a database, pre-processing, by the controller, the first time-series data to generate a second time-series data, implementing, by the controller, an anomaly detector model, the anomaly detector model configured to generate a third time-series data, and implementing, by the controller, a foreign object debris (FOD) damage model, the FOD damage model receiving the third time-series data. The pre-processing the first time-series data, the implementing the anomaly detector model, and the implementing the FOD damage model may be defined by the plurality of individual configuration parameters.

Abstract: To obtain vehicle speed deviation data for changeover between accelerator and brake properly with inclination of a standard mode. In technique of calculating a changeover vehicle speed deviation from accelerator to brake in driving vehicle along standard mode (target vehicle speed) of vehicle drive pattern defined by time and vehicle speed within range of predetermined vehicle speed and time deviations from standard mode, an inclination AB of the standard mode is calculated by approximate differentiation of vehicle speed at a judgment standard point A of a current time instant on standard mode, first inclination AB is multiplied by an accelerator-to-brake changeover time deviation preset value ?t?1, and the accelerator-to-brake changeover vehicle speed deviation from the judgment standard point A to a changeover judgment point E for changeover at the current time instant is calculated by addition of the product and an accelerator-to-brake changeover vehicle speed deviation preset value ?V?1.

Abstract: A wheel testing assembly for testing a wheel on a bicycle for a bend includes a clamping unit that is selectively attached to a frame of a bicycle. Moreover, the clamping unit is aligned with a wheel on the bicycle. A gauge is removably coupled to the clamping unit and the gauge is aligned with the wheel. The gauge has a distal end with respect to the clamping unit. The distal end frictionally engages the wheel at a point where the wheel is bent. In this way a roundness of the wheel is tested.

Abstract: A vertical high-speed testing device for a spiral seal of a cone bit bearing is provided. The device includes an upper fixed plate, a liquid cylinder, a cone, a spiral sleeve, a shaft and a lower fixed plate. The spiral sleeve is in threaded connection to the cone. Both the cone and the spiral sleeve are sheathed on the shaft. Sealing threads are provided on an inner surface of the spiral sleeve, and there is a clearance between the sealing threads and the shaft. By the testing device of the present invention, a spiral seal structure for a cone bit bearing is simulated, and the cone drives the spiral sleeve to rotate; and the sand draining performance of the spiral seal is tested by measuring the time required to drain sand-containing medium, so that the smooth production and application of spiral seal products can be assured.

Abstract: The present disclosure relates to a device for the transport of biological or other samples and for analysis thereof by interaction with a pulsed and focused energy beam, comprising: a transport capillary configured to house transport liquid, configured with an outlet section; a nozzle disposed concentrically and externally to the transport capillary, wherein said nozzle comprises a discharge section; and wherein the space between the transport capillary and the nozzle is configured to house a stabilizing gas; at least a first electrode for connecting a voltage to the transport liquid, in turn connected to a second electrode arranged at the outlet of the transport liquid capillary and the nozzle wherein said electrodes are subjected to an electrical potential difference. The disclosure also relates to a method comprising the use of said device.

Abstract: The various embodiments herein provide a system and method for automatic gross-examination of tissue samples. The apparatus is of cubicle shape comprising a bed where the specimen is placed, an ultrasound equipment mounted on top of cubicle box, a robotic arm mounted with a plurality of surgical blades, and a camera. The ultrasound technology is used to accurately understand the specimen, size and dimensions of a tumor that is studied. The robotic arm assisted surgical blades receive ultrasound output or camera output and accurately slice the specimen for further analysis. The information pertaining to gross-examination is stored in an external server connected to the apparatus and analyzed using artificial intelligence algorithms.

Abstract: A Sampler and process for collecting, growing, inoculating and evaluating microbes in-situ. The Sampler may be loaded with an active or inert media to assist with the collection of microbes. It is closed and lowered to a desired depth. Sampler is opened to initiate sampling. Materials are added to the sampler to stimulate growth or change the environment. To collect and grow in situ microbes, the sampler is left open for a period of time, a trigger closes and seals the sampler capturing contents specific to that location. The sampler is lifted preserving the in-situ conditions from the collection location. The contents of the sampler can be interrogated through sealed ports at the field site or at a remote location. The sampler can also be utilized as a biologic reactor allowing researchers to connect laboratory equipment to analyze, modify, or cultivate the collected sample.

Abstract: A gas inlet nozzle assembly comprises an inlet tube (10) having an inlet end (10a) and an outlet end (10b). A hydrophobic filter (15) is removably engageable in the inlet tube (10) through the inlet end (10a), and a particulate filter (12) is removably engageable in the inlet tube (10) through the inlet end (10a). A retainer (13) is lockingly engageable in the inlet end (10a) of the inlet tube (10) so as to retain the hydrophobic filter (15) and the particulate filter (12) in the inlet tube (10).

Abstract: A method for utilizing a gas sampling panel is provide, including at least one system sample gas inlet, a purge gas inlet, a system outlet, a system vent outlet, a purge gas valve, at least one manifold station valve, a regulator isolation valve, a regulator, a flow meter inlet valve, a flow meter, a flow meter outlet valve, a relief valve, a process valve, a process check valve, a purge check valve, and a vent check valve.

Abstract: The present invention relates to a dust measuring apparatus and, more particularly, to a miniaturized fine dust measuring apparatus. According to one embodiment of the present invention, a non-sampling fluid is discharged irrespective of a speed change of an external fluid, thereby providing a particle sampling probe and a miniaturized fine dust measurement apparatus that provide uniform-speed sampling. Accordingly, it is possible to eliminate a restriction on a place for fine dust measurement.

Abstract: Tissue dissociators configured to disrupt a biological tissue sample are provided. Aspects of the tissue dissociators according to certain embodiments include a blade holder having a blade and a sample holder that includes a tissue actuator having a distal end pliable stopper where the tissue actuator is configured to be displaced along a longitudinal axis with the sample holder. Also provided are methods of dissociating a biological tissue sample with the tissue dissociators, as well as kits including the tissue dissociators.

Abstract: An object of the present invention is to provide a means that enables improvement of efficiency in recovery of rare cells in a cell suspension by suppressing cell adsorption to laboratory equipment but not suppressing cell adsorption to a cell spreading substrate. A cell spreading method according to the invention includes a step of adding to a cell suspension a protein in such an amount as to give a final concentration of from 0.0001% to 0.1%, and preferably from 0.0005% to 0.01% (a protein addition step) and a step of spreading cells contained in the cell suspension that has been subjected to the protein addition step on a cell spreading substrate having a contact angle with water of 60 degrees or more, and preferably from 70 to 90 degrees, and allowing to stand to cause the cells to adsorb onto the substrate (a cell spreading step).

Abstract: A method for labeling concentration density differentials of an analyte in a biological sample is provided. The method may including the steps of: binding an enzyme to an analyte contained in a sample, the enzyme capable of acting on at least two chromogens; incubating the sample with a first chromogen for a first time period to generate a first color chromogen-enzyme product, the first color chromogen-enzyme product reflecting light observable as a first color; and incubating the sample with a second chromogen for a second time period to generate a second color chromogen-enzyme product, the second color chromogen-enzyme product reflecting light observable as second color. A combination of the light observable as the first color and the light observable as the second color may be observable as a third color, and each color may describe a different analyte density in the biological sample.

Abstract: A slide processing apparatus controls the temperature and orientation of a microscope slide carrying one or more specimens. The apparatus heats the specimen-bearing microscope slide while the slide is oriented to both facilitate adhesion between the specimens and the slide and control movement of the specimens relative to the microscope slide. A slide dryer of the apparatus conductively heats the specimens using a conductive slide heater that physically engages the microscope slide.

Abstract: A carrier strip having a plurality of areas for retaining anatomical pathology specimens may have a backing, a cover coupled to the backing along side regions located along opposite longitudinal edges of the carrier strip and along lateral intermediate regions positioned between each of the plurality of areas for retaining anatomical pathology specimens. The carrier strip may be configured to individually retain each of the anatomical pathology specimens in one of the plurality of areas for retaining anatomical pathology specimens between the backing and the cover. Diagnostic studies of anatomical pathology specimens may be facilitated by distributing a digital copy of an image of the specimen may be to a pathologist. A diagnosis may be received from the pathologist based on the digital image of the specimen.

Abstract: A microscope slide staining system has a chamber, a plurality of slide support elements, a plurality of spreading devices positionable in association with microscope slides supported on the slide support elements so the spreading devices define a gap between the spreading device and the microscope slide and so the spreading device and the microscope slide are movable relative to one another to spread at least one reagent on the microscope slide independent of the other spreading devices and microscope slides.

Abstract: An apparatus for spreading at least one reagent on at least a portion of a microscope slide includes a spreading device positionable in association with a microscope slide in a way that the spreading device defines a gap between the spreading device and the microscope slide and in a way that the spreading device and the microscope slide are movable relative to one another to spread at least one reagent on at least a portion of the microscope. The spreading device has a reservoir in which the at least one reagent is stored in a way that the at least one reagent is dischargeable from the reservoir onto the microscope slide when the spreading device is positioned in association with the microscope slide.

Abstract: The invention provides a method for optical clearing of biological samples utilizing a composition comprising a cinnamate ester. The invention further provides a kit suitable for performing said method and the use of said composition for optical clearing of biological samples.

Abstract: A direct method for manufacturing a large model fractured core and maintaining original oil-water saturation, including the following steps: (1) determining the volume V, porosity ?, permeability K, oil saturation So, water saturation Sw and the like of a fractured core to be manufactured; (2) preparing simulated oil, and determining the used oil mass mo=Vo×?o; (3) under the circumstance of no consideration of oil saturation, acquiring the mass of the used water, cement and quartz sand; (4) while establishing oil saturation, acquiring the mass mw of water for manufacturing the core as mw=a?Vo×?w; (5) mixing oil, water and an emulsifier evenly to prepare an oil-in-water emulsion; (6) adding cement and quartz sand into the emulsion and stirring evenly to obtain cement slurry; (7) when a cement sample is in a semi-solidified state, cutting the cement sample with a steel wire; and (8) solidifying the cement sample to the end.

Abstract: A sample preparation system includes a sample input, a first chamber fluidly coupled to the sample input and containing a sample preparation reagent, a second chamber containing a surface enhanced Raman spectroscopy (SERS) sensor structure and a third chamber containing a sensor preparation solution. The sample input, the first chamber and the second chamber are fluidly coupled to one another in a series and the third chamber is fluidly coupled to the third chamber outside of the series so as to sequentially direct a sample received by the sample input through the first chamber to the second chamber and out of the second chamber and so as to direct the sensor preparation solution into the second chamber following discharge of the sample out of the second chamber.

Abstract: A falling weight deflectometer (1) comprising a load plate (2) adapted to engage a test surface, force transmission means adapted to transmit a force to the load plate (2), buffer means (19), a drop weight (8). The drop weight (8) is adapted to impact said force transmission means via said buffer means (19) so as to provide a force to be transmitted to said load plate via said force transmission means. The falling weight deflectometer further comprises at least one linear electric motor (15) for lifting said drop weight (8) to a predetermined height above said force transmission means.

Abstract: A system for detecting a characteristic of a fluid. In one example, the system includes a tube, a float, a sensor, and a controller. The tube is configured to receive the fluid. The float is located within the tube. The sensor is configured to sense a position of the float. The controller is configured to receive, from the sensor, the position of the float, and determine a characteristic of the fluid based on the position of the float. The characteristic may be a density or a concentration.

Abstract: A method of operating a particulate matter sensor includes accumulating particulate matter on the sensor, thereby changing resistance between electrodes of the sensor. The sensor provides a signal that varies based upon an amount of the particulate matter on the sensor and includes a measurement cycle that includes a deadband zone in which the resistance is greater than a first predetermined value, followed by an active zone in which the resistance is less than or equal to the first predetermined value, followed by a regeneration zone. A first bias voltage is applied across the electrodes during the deadband zone and a second bias voltage which is less than the first bias voltage is applied across the electrodes during the active zone. An output that is representative of the amount of the particulate matter is calculated after an end of the deadband zone is reached and prior to an end of the measurement cycle.

Abstract: This invention relates to an automatable method to rapidly assess individual water purification needs, and the system that can quickly optimize the filtration formulation. In this method, information from multiple sources is merged to create a composite functional requirement for the filtration needs. With a priori knowledge of filtration characteristics of various solid phase extraction media, an optimized formulation can be identified that fixes the problems associated with the point of use.

Abstract: The present disclosure provide a method and apparatus for pressure-pulse decay performed on whole cylindrical samples whose entire outer surface areas are eligible to receive the pulse. Using the methods and apparatus of the present disclosure, not only is the experimental time dramatically shortened, it also allows for simultaneous determination of local permeabilities parallel and perpendicular to their native bedding planes. Currently, there is no permeability-measurement technique to capable of doing so from a single sample from a single test.

Abstract: The sample preparation apparatus 1 includes a measurement unit 2 configured to measure a sample containing particles acquired from a sample container 10 and detect measurement target particles in the sample, a sample preparation unit 3 capable of adjusting the concentration of measurement target particles in a sample acquired from a sample container 10 and configured to prepare a measurement sample by mixing a sample and any of a plurality of types of particle detection reagents including a particle labeling substance, and a control unit 4 for controlling the sample preparation unit 3 so as to generate concentration information of the measurement target particles in the sample in the sample container 10 based on the measurement data of the measurement unit 2 and adjust the concentration of the measurement target particles in the sample acquired from the sample container 10 according to the generated concentration information and the type of particle detection reagent used for preparing the measurement sample.

Abstract: In one aspect, the present teachings provide a system for performing cytometry that can be operated in three operational modes. In one operational mode, a fluorescence image of a sample is obtained by exciting one or more fluorophore(s) present in the sample by an excitation beam formed as a superposition of a top-hat-shaped beam with a plurality of beams that are radiofrequency shifted relative to one another. In another operational mode, a sample can be illuminated successively over a time interval by a laser beam at a plurality of excitation frequencies in a scanning fashion. The fluorescence emission from the sample can be detected and analyzed, e.g., to generate a fluorescence image of the sample. In yet another operational mode, the system can be operated to illuminate a plurality of locations of a sample concurrently by a single excitation frequency, which can be generated, e.g., by shifting the central frequency of a laser beam by a radiofrequency.

Abstract: Embodiments disclose a device for testing biological specimen. The device includes a sample carrier and a detachable cover. The sample carrier includes a specimen holding area. The detachable cover is placed on top of the specimen holding area. The detachable cover includes a magnifying component configured to align with the specimen holding area. The focal length of the magnifying component is from 0.1 mm to 8.5 mm. The magnifying component has a linear magnification ratio of at least 1. Some embodiments further include a multi-camera configuration. These embodiments include a first camera module and a second camera module arranged to capture one or more images of the first holding area and the second holding area, respectively. The processor may perform different analytic processes on the captured images of different holding areas to determine an outcome with regard to the biological specimen.

Abstract: The present invention relates to an apparatus for measuring moisture of a solid sample, a method for measuring a moisture content of the solid sample, and a method for analyzing an imidization rate, and more particularly, to an apparatus for measuring moisture of a solid sample, a method for measuring a moisture content of the solid sample, and a method for analyzing an imidization rate, which detect the moisture content of the solid sample at a specific temperature by using a Karl-Fischer device capable of selectively detecting only the moisture content of the solid sample in the method for analyzing an imidization rate of the solid sample and calculate the imidization rate of the solid sample by using the detected moisture content.

Abstract: Apparatus for measuring surface profiles within passages such as the interiors of pipes tubing, casing or the like includes an optical scanning system that acquires digital data that directly identifies the surface profiles. A temperature control system facilitates operation in high temperature environments. The optical scanning system may include a camera located between a light source and a conical mirror. Light deflecting elements may guide light from the light source to the conical mirror along a path that reverses direction.

Abstract: Embodiments of the invention relate to a gas analyzer or other device and to a gas analyzer that is configured with a purger that is configured to remove certain gasses from an interior of the gas analyzer. A molecular sieve is an example of a purger or of a purging structure that may be disposed within the housing of the gas analyzer. The purger may be positioned within or inside of the housing such that the unwanted gasses are absorbed or adsorbed through diffusion. The purger is replaceable.

Abstract: This invention relates a biomarker detection system, for detecting cancer biomarkers using optical heterodyning. The system includes a tunable laser configured to produce a plurality of laser beams of at least two frequencies, a pair of optical fibers coated with gold nanoparticles and functionalized with an antibody is configured to undergo a change of fiber surface of each optical fiber by adsorbing molecules of an analyte on a surface of the antibody, modify a reflection of the plurality of laser beams inside a fiber core of the each optical fiber when the each optical fiber is bent, and create an audible beat frequency; and perform spectral analysis. A frequency spectrum analyzer configured to provide a composition information of the adsorbed molecules based on a spectral analysis of the beat frequency.

Abstract: An optical phantom produces a time-resolved diffuse reflectance spectrum and includes: a light source; a spatial light modulator; and an optical delay line including optical fibers of different length that produce different time-of-flight distributions, such that different time-of-flight distributions are combined and produce phantom light having the time-resolved diffuse reflectance spectrum.

Abstract: A fluorescent spectrum correcting method includes comparing fluorescent spectrum obtained from micro-particles labeled with a plurality of fluorescent pigments with reference spectrum to separating the fluorescent spectrum into fluorescent spectrum for each pigment, and previously measured spectrum data is used as the reference spectrum.

Abstract: System and apparatus for portable gas detection. Specifically, this disclosure describes apparatuses and systems for optical gas detection in a compact package. There is a need for a very compact, low-power, gas detection system for gases such as CO2, NOx, water vapor, methane etc. This disclosure provides an ultra-compact and highly efficient optical measurement system based on principals of optical absorption spectroscopy. It reduces the size of the instrument as well its power consumption by more than an order of magnitude making it possible to deploy it widely. There is an identified need for large number of distributed gas sensors to improve human health, environment, and save energy usage.

Abstract: A glucose sensor comprising an optical energy source having an emitter with an emission pattern; a first polarizer intersecting the emission pattern; a second polarizer spaced a distance from the first polarizer and intersecting the emission pattern, the second polarizer rotated relative to the first polarizer by a first rotational amount ?; a first optical detector intersecting the emission pattern; a second optical detector positioned proximal to the second polarizer, the first polarizer and the second polarizer being positioned between the optical energy source and the second optical detector, the second optical detector intersecting the emission pattern; a compensating circuit coupled to the second optical detector; and a subtractor circuit coupled to the compensating circuit and the first optical detector.

Abstract: The invention provides a non-invasive detecting apparatus for fruits or vegetables, and ranking method thereof. The non-invasive detecting apparatus includes: a heater, configured to operably heat the fruits or the vegetables, by leaning the heater on a surface of the fruits or the vegetables; a temperature sensor, configured to operably sense a temperature variation level of the fruits or the vegetables, after heating the fruits or the vegetables by the heater; a processor, electrically coupled to the heater and the temperature sensor; a power supply, electrically coupled to the processor for supplying a power to the processor; and a user control unit, electrically coupled to the processor, for turning on, turning off, or setting the heater.

Abstract: It is provided a system for determining characteristics of an object or a sample comprising at least a first and a second transmitter unit, wherein the first transmitter unit is configured for transmitting first electromagnetic waves towards the object and the second transmitter unit is configured for transmitting second electromagnetic waves towards the object; at least one receiver unit) for receiving electromagnetic waves from the object, the receiver unit generating a receiver signal upon receipt of the electromagnetic waves from the object. The first and the second transmitter unit is configured in such a way that the first and the second electromagnetic waves are modulated differently in such a way that by demodulating the receiver signal, a portion of the receiver signal evoked by the first electromagnetic waves can be separated from a portion of the receiver signal evoked by the second electromagnetic waves. The system comprises an evaluating unit.

Abstract: An optical chemical analyser comprises a source of a first amount of radiation (46), an optics module configured to direct the first amount of radiation such that it is incident on or passes through a target (14) at a target location, the optics module further being configured to receive a second amount of Raman scattered radiation from the target and direct the second amount of radiation (206) to a Spatial Interference Fourier Transform (SIFT) module, the SIFT module including a first dispersive element (216) and a second dispersive element (218), the SIFT module being configured such that a portion of the second amount of radiation is received by the first dispersive element and interferes with a portion of the second amount of radiation received by the second dispersive element to form an interference pattern; the SIFT module further comprising a detector (48) configured to capture an image of at least a portion of the interference pattern and produce a detector signal (226) based on the captured image; an

Abstract: The technology disclosed in this application provide for non-destructive and non-contact optical characterization of fiber reinforced plastic composites and other structures under test based on optical transmission scanning.

Abstract: The present invention is an optical measurement system for measuring a liquid sample within a well. The system comprises a light source configured to transmit light though the well, a detector configured to measure optical signals derived from the transmitted light, and a tunable optical element. The tunable optical element is positioned between the light source and the well. The tunable optical element is operable to shape the light to compensate for distortions induced by a surface of the liquid sample. The detector is preferably located below the well for receiving a forward scatter signal indicative of at least one characteristic of the particles within the liquid sample.

Abstract: Disclosed herein are lithographic systems and methods. For example, disclosed herein are methods comprising illuminating a first location of a plasmonic substrate with electromagnetic radiation; wherein the electromagnetic radiation comprises a wavelength that overlaps with at least a portion of the plasmon resonance energy of the plasmonic substrate; and wherein the plasmonic substrate is in thermal contact with a liquid sample comprising a plurality of particles; thereby: generating a bubble at a location in the liquid sample proximate to the first location of the plasmonic substrate, the bubble having a gas-liquid interface with the liquid sample; trapping at least a portion of the plurality of particles at the gas-liquid interface of the bubble and the liquid sample; and depositing at least a portion of the plurality of particles on the plasmonic substrate at the first location.

Abstract: A sensory material with high sensitivity, selectivity, and photostability has been developed for vapor probing of organic amines. The sensory material is a perylene-3,4,9,10-tetracarboxyl compound having amine binding groups and the following formula where A and A? are independently chosen from N—R1, N—R2, and O such that both A and A? are not O, and R1 through R10 are amine binding moieties, solubility enhancing groups, or hydrogen such that at least one of R1 through R10 is an amine binding moiety. This perylene compound can be formed into well-defined nanofibers. Upon deposition onto a substrate, the entangled nanofibers form a meshlike, highly porous film, which enables expedient diffusion of gaseous analyte molecules within the film matrix, leading to a milliseconds response for vapor sensing.

Abstract: A method for detecting or comparing mechanical strength of macro-molecular polymer materials. The detecting method has the steps of measuring the mechanical strength and the maximum value of the fluorescence absorption spectrum of each of the plurality of samples to form a curve relationship or function relationship between the maximum value of the fluorescence absorption spectrum and the mechanical strength; measuring the maximum value of the fluorescence absorption spectrum of the target material, and using the curve relationship or the function relationship to obtain the mechanical strength of the target material. The plurality of samples and the target material are both prepared from a macro-molecular polymer, and the macro-molecular polymer may be composed of disulfonate—difluorobenzophenone, hydroxyindole and difluorobenzophenone as monomers, and the sulfonate groups of the disulfonate—difluorobenzophenone have metal cations.

Abstract: A device and method for detecting the presence of bacteria in a sample are provided. A multi-step process for sample preparation is utilized and a microfluidic device is disclosed. The detection is performed using microfluidics and physical changes in multiple samples in differential mode.