摘要:
Triboluminescent materials that generate emission of light in response to mechanical stimulus attract significant attention due to their applications in development of “smart materials” and damage sensors. Among metal complexes, rare-earth europium and terbium complexes are most widely used, while there is no systematic data on triboluminescence in more readily available and inexpensive Cu complexes, with only a few scattered examples reported in the literature. We report a new family of photoluminescent Cu—NHC complexes that show bright triboluminescence (TL) in crystal state visible even in ambient light under air upon grinding or crushing the crystalline sample. Moreover, when these complexes are dispersed into amorphous polymethylmethacrylate (PMMA) films even at small concentrations, TL is easily observed. In Cu-containing polymer films, surrounding gas discharge is likely involved in excitation of brightly luminescent Cu—NHC complexes. Observation of TL in polymer films overcomes limitations of using crystalline phase for mechanoresponse and opens up possibilities for development of mechanoresponsive coatings and materials based on inexpensive metals such as Cu.
摘要:
An apparatus for measuring mechanoluminescent light includes a chamber defining an enclosure for a portion of a structure to be monitored and providing an opening fitted onto the structure. The structure has a mechanoluminescent material thereon. The apparatus further includes an imaging sensor positioned and configured to take images of the mechanoluminescent material and an electronic controller in wired or wireless communication with the imaging sensor, the electronic controller being capable of controlling the properties of the imaging sensor and processing the images of the mechanoluminescent material.
摘要:
A pellicle is proposed in which the agglutinant layer which enable the pellicle to be adhered to a photomask is doped with a mechanoluminescent material so that the uniformness of the thickness of the agglutinant layer can be confirmed, when the pellicle is adhered to the photomask, by observing visually or by CCD camera for any irregularity in the pattern of the light emitted from the agglutinant layer.
摘要:
Flow cytometry concepts are modified to enable dynamic characterizations of particles to be obtained using optical scattering data. Particles in flow will be introduced into a sample volume. Light scattered by a particle in the sample volume is collected and analyzed. What differentiates the concepts disclosed herein from conventional flow cytometry is the use of an acoustic source that is disposed to direct acoustic energy into the sample volume. As the particle passes through the sample volume, it responds to the acoustic energy, causing changes in the light scattered by the particle. Those changes, which are not measured during conventional flow cytometry, can be analyzed to determine additional physical properties of the particle.
摘要:
An object of the invention is to provide a material determining apparatus for a steel product and a material determining method for a steel product which can stably and precisely determine a carbon content of the steel product. The invention provides a material determining apparatus for a steel product, which is provided with an imaging device for continuously imaging a spark generated during rubbing the steel product at a plurality of times, a detecting part for detecting spark regions and bursting spark regions from each of the imaged pictures imaged by the imaging device, a calculating part for calculating a total of the spark regions and a total of the bursting spark regions by summing up the numbers of the spark regions and the bursting spark regions detected by the detecting part with regard to each of all the imaged pictures, so as to calculate a rate of the total of the bursting spark regions with respect to the total of the spark regions, and a determining part for determining a carbon content of the steel product based on the rate, and a material determining method for the steel product.
摘要:
A method of detecting defects in structures, comprising the steps of inducing mechanical energy in a structure via the emission of a broad-band acoustic signal, and capturing over a time interval a plurality of images of the structure each of the plurality of images comprised of a plurality of pixels arranged in a plurality of rows and columns each indicative of an intensity of infrared energy emitted by a portion of the structure.
摘要:
A method for manufacturing a piezoelectric element is disclosed. The method includes the steps of forming a lower electrode over a substrate, forming a piezoelectric luminous film over the lower electrode, forming an upper electrode over the piezoelectric film, forming a pressure luminous layer for emitting light upon application of pressure on the upper electrode, and attaching a substrate to the pressure luminous layer—has been inserted as a new abstract.
摘要:
Mechanoluminescent devices and articles, such as wearable articles, that include mechanoluminescent devices. The mechanoluminescent devices may have a lateral type architecture or a vertical type architecture. The mechanoluminescent devices may be sensors, including pressure sensors.
摘要:
Mechanoluminescent devices and articles, such as wearable articles, that include mechanoluminescent devices. The mechanoluminescent devices may have a lateral type architecture or a vertical type architecture. The mechanoluminescent devices may be sensors, including pressure sensors.
摘要:
A hyper-velocity impact sensor including an optical fiber probe that transmits an optical pulse generated during impact with an object, a spectroscopic analyzer that receives the optical pulse and produces spectral information about the optical pulse, a connecting optical fiber configured to convey the optical pulse between the optical fiber probe and the spectroscopic analyzer, and at least one processor coupled to the spectroscopic analyzer and configured to receive and analyze the spectral information to determine at least one chemical element or compound contained in the object.