94 results about "Mechanoluminescence" patented technology

A mechanoluminescence material comprising a mother body material and a luminescence center added to the mother body material. The mother body material is constituted of at least one kind of oxide selected from alumino silicate, aluminate, silicate, tantalate, niobate, gallium oxide, and ZrO2, and the luminescence center is at least one kind selected from a rare earth metal and a transition metal which emits light when electrons excited by mechanical energy are restored to a normal state.

A sensor for visualizing stress includes a medium and a plurality of mechanoluminescence assemblies dispersed therein. A mechanoluminescence assembly can include a mechanoluminescence material and a coating material, where the mechanoluminescence material is at least partially coated with the coating material. A method of using the sensor can include applying the medium to a substrate and allowing the medium to form a solid film on the substrate. Methods of using the mechanoluminescence assemblies are also provided.

Provided are a stress analysis method and stress analysis equipment that enable a detailed stress measurement, by using both a photoelasticity measurement method and a stress measurement (mechanoluminescence measurement) which utilizes a mechanoluminescent substance to measure a stress state of an object. Physical quantities that are measurable include individual principal stress component and a principal stress direction. The photoelasticity measurement method alone cannot measure individual principal stress component values.

A color switchable stress / fracture sensor in combination with a structure. The combination apparatus includes a structure requiring stress and / or fracture detection, and at least one elasto-mechanoluminescent material at least partially dispersed in and / or on the structure and / or in a coating on the structure. The combination apparatus further includes at least one fracto-mechanoluminescent material at least partially dispersed in and / or on the structure and / or in a coating on the structure, and at least one fiber optic cable positioned to receive and transmit sufficient light emitted from the elasto-mechanoluminescent material due to stress applied to the elasto-mechanoluminescent material and to receive and transmit sufficient light emitted from the fracto-mechanoluminescent material due to fracture of the fracto-mechanoluminescent material.

The present invention aims to provide a mechanoluminescent material which is excellent in mechanoluminescent properties and can achieve a mechanoluminescence intensity sufficiently suited to practical use, a raw material composition for producing the mechanoluminescent material, and a method for producing a mechanoluminescent material. The mechanoluminescent material of the present invention includes strontium aluminate as a base material, a Eu ion, and at least one ion selected from the group consisting of Nd, Dy, and Ho. An amount of the Eu ion contained in the mechanoluminescent material is 0.0001 to 0.1 mol per mole of the strontium aluminate. An amount of the at least one ion selected from the group consisting of Nd, Dy, and Ho contained in the mechanoluminescent material is, as the sum of amounts of the three ions Nd, Dy, and Ho, 0.0001 to 0.01 mol per mole of the strontium aluminate. The present invention also provides a raw material composition for a mechanoluminescent material used for synthesizing the mechanoluminescent material, a mechanoluminescent coating composition and a resin composition each containing the mechanoluminescent material, and applied articles such as mechanoluminescent articles formed from the resin composition.

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.

The invention relates to the field of mechanoluminescent sensors, discloses application of zinc sulfide in a mechanoluminescent sensor, the mechanoluminescent sensor, a preparation method of the mechanoluminescent sensor and application of zinc sulfide and the mechanoluminescent sensor, and particularly discloses application of transition metal element doped zinc sulfide particles in a visible sensor based on mechanoluminescence, the visible sensor based on mechanoluminescence and a preparation method of the visible sensor. The invention further discloses application of the transition metal element doped zinc sulfide particles, the visible sensor based on mechanoluminescence and the visible sensor prepared through the method in a wind tunnel experiment. The pressure sensor capable of being used for the wind tunnel experiment is designed through the mechanoluminescent performance of transition metal element doped zinc sulfide, the pressure sensor has ultra-sensitive and high-precision real-time optical responses to small dynamic force, the detecting limit of pressure intensity is 25 Pa, the detecting limit of energy is 28 mj, high-precision responses are achieved, the response time is 10 ms, and real-time responses are achieved.

In an embodiment, a system includes a turbomachine having a first turbomachine component including a first mechanoluminescent material. The first turbomachine component is configured to produce a first light emission upon exposure to a mechanical stimulus sufficient to cause mechanoluminescence by the first mechanoluminescent material. The system also includes a turbomachine monitoring system configured to monitor the structural health of the first component based on detection of the first light emission.

The invention discloses a yellow-green mechanoluminescence ceramic material and a preparation method thereof, aims to provide a pressure sensing material with mechanoluminescence performance and belongs to the technical field of ceramic. The chemical composition general formula of the ceramic is Sr2-x-ySi7O4N8:xEu<2+>,yRe<3+>, wherein Re is selected from one or combination of two of Gd and Lu; thevalue range of x is greater than or equal to 0.01 and is less than or equal to 0.1; the value range of y is greater than or equal to 0.01 and is less than or equal to 0.2. The luminescence center ofthe ceramic is Eu<2+> ion; rare earth impurity ions such as Gd<3+> and Lu<3+> and the like are introduced into the ceramic, so that the mechanoluminescence effect of the ceramic can be effectively improved. The ceramic has the characteristics of high compressive strength and obvious mechanoluminescence effect and can be applied to pressure sensing parts of pressure sensors.

A stress analysis method uses a thermoelastic stress measurement device to measure measuring stress state acting on an object by measuring material temperature state variation caused by stress, a mechanoluminescence measurement device to measure measuring stress state acting on the object by measuring light emitted from mechanoluminescence material according to the stress and an arithmetic processing device to obtain mechanical information, which includes prescribed stress distribution, by performing arithmetic processing on both the measurement data.

A mechanoluminescence material comprising a matrix of composite metal oxide containing strontium and aluminum, represented by the general formula SrM1Al6O11 (wherein M1 is an alkaline earth metal) or SrM2Al3O7 (wherein M2 is a rare earth metal), and further comprising, as luminescence centers, a metal selected from among rare earth metals and transition metals capable of emitting light when a carrier having been excited by mechanical energy returns to its ground state.

When visualizing the stress distribution of natural bone, synthetic bone, or a member attached to either thereof without omitted points, in order to measure accurately in a variety of modes using an inexpensive system, a mechanoluminescence material thin film 6 is formed in advance on a bone material peripheral surface 5 in an appropriate area thereof including the portion where an insertion support portion 4 of an artificial hip prosthesis 2 is inserted into a hollow inside 3 of a damaged femur 1 or a synthetic bone simulating the damaged femur. The mechanoluminescence material thin film 6 portion is photographed over its entire circumference with an IICCD camera 7 from the external peripheral side thereof as or after the artificial hip prosthesis 2 is inserted. The obtained image is fed to a computer 11 to obtain a luminescence image 8. The computer 11 outputs the intensities of the received light in the form of an image as is, so that the luminescence image 8 can be obtained easily. Particularly, the data about the intensities of the received light can be used as stress / strain data virtually as is. Such method is also suitable for dynamic analysis.

The invention discloses near-infrared-region mechanoluminescence fluorescent powder of which the general formula is Ca(1-x)ZnOS:xNd<3+>, wherein 0.05%<=x<=1.0%. The invention also discloses a preparation method of the near-infrared-region mechanoluminescence fluorescent powder. The method comprises the following steps: (1) respectively weighing a calcium-containing compound, a sulfur-containing compound, a zinc-containing compound and a neodymium-containing compound according to the mol percents of the elements as raw materials; (2) uniformly grinding the raw materials in the step (1), and roasting in a protective atmosphere or in vacuum; and (3) taking out the roasted sample, and grinding to obtain the near-infrared-region mechanoluminescence fluorescent powder. The mechanoluminescence peak of the fluorescent powder under the action of friction force and pressure is in the 900-1400nm near-infrared spectral region; and the near-infrared luminescence can also be effectively excited by 500-550nm yellow light in the ultraviolet region, 600nm-around orange red light and 808nm laser.

A strain sensor with color emission indicating a strain is disclosed. The strain sensor can include a piezoresistive layer having a first portion of a polymer matrix body and conductive fillers dispersed in the first portion of the polymer matrix body, a mechano-luminescent layer having a second portion, which is disposed on the first portion, of the polymer matrix body, green emissive particles, and red emissive particles, the green and red emissive particles being dispersed in the second portion of the polymer matrix body, and a first and second electrodes spaced apart from each other and directly connected to the piezoresistive layer.

The invention relates to a mechanoluminescence composite material as well as a preparation method and application thereof. Raw materials for preparing the mechanoluminescence composite material comprise eggshells, zinc sulfide and a compound containing doping ions, wherein the mechanoluminescence composite material comprises mZnS-nCaZnOS:xM, M is the doping ions, and m, n and x respectively represent mole numbers of ZnS, CaZnOS and M. Compared with a mechanoluminescence composite material prepared by taking high-purity calcium carbonate as a calcium source, the mechanoluminescence composite material prepared by taking eggshells as the calcium source and combining zinc sulfide and doped ions is low in cost and wide in raw material source. In addition, experiments prove that other componentsin the eggshell do not influence the luminescence property of the mechanoluminescence composite material. Therefore, the mechanoluminescence composite material is low in cost, good in luminescence property and beneficial to large-scale production and application.

A novel highly bright mechanoluminescence material free from decay of luminescence brightness even if repeated stress is applied, comprising a composite semiconductor crystal of the general formula xM1A1·(1−x)M2A2 (wherein each of M1 and M2 independently represents an atom selected from among Zn, Mn, Cd, Cu, Eu, Fe, Co, Ni, Mg and Ca, and each of A1 and A2 is an atom independently selected from among chalcogens, provided that M1A1 is different from M2A2; and x is a positive number less than 1); and a process for producing the same.

The invention belongs to the technical field of luminescent materials, and discloses a luminescent material having aggregation-induced emission property as well as preparation and application thereof.A molecular general formula of the luminescent material is as shown in a formula I which is shown in the description, wherein R1 and R2 are different or same electron donating or electron withdrawinggroups, and R3 and R4 are simultaneously hydrogen or methoxy groups. The luminescent material disclosed by the invention is stable in structure, has the aggregation-induced emission property and is good in luminescent performance, and the highest efficiency of crystalline-state fluorescent quanta can be up to 20.7 percent; meanwhile, a preparation method of the luminescent material is simple in operation, gentle in reaction conditions and high in reaction yield; the luminescent material has the advantages that solid-state luminescence can be realized, the cost of raw materials is low, regeneration is realized, regulation of light color can be easily realized through accessing different electron donating and electron withdrawing groups, and the like, and the luminescent material is beneficial for large-scale popularization, and the problem of energy depletion is solved; meanwhile, the luminescent material has mechanoluminescence property, and can be applied to the fields of fake prevention, real-time pressure change monitoring and the like. The formula is shown in the description.

Provided is a method of manufacturing a mechanoluminescent fiber. The method includes the steps of: preparing an elastic fiber having a longitudinal groove on the surface thereof; forming a primer layer including a coupling agent on the elastic fiber; filling the groove of the elastic fiber with a mixture of a stress transfer substance and a stress luminescent substance; and forming a silicon adhesive layer on the elastic fiber of which the groove is filled with the mixture of a stress transfer substance and a stress luminescent substance. The silicon adhesive layer is 3-dimensionally bonded to the elastic fiber and the mixture of a stress transfer substance and a stress luminescent substance.

Belonging to the field of inorganic luminescent materials, the invention discloses an oxysulfide elastic mechanoluminescence material and a preparation method thereof. The chemical expression generalformula of the oxysulfide elastic mechanoluminescence material is Sr1-xZn2-yS2O:Ax,By, wherein x is greater than or equal to 0 and less than or equal to 1, y is greater than or equal to 0 and less than or equal to 2, x and y represent molar percentage content, and x and y are not zero at the same time; A is at least one of the rare earth ions Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb and thelike; and B is at least one of transition metal ions Mn and Cu. The preparation method includes: weighing the raw materials according to the stoichiometric ratio of the metal elements, performing grinding in an agate bowl, mixing the substances uniformly, putting the mixed powder into an alumina crucible, performing heating to 800-1200DEG C in a protective atmosphere or in vacuum, conducting heatpreservation for 10-48h, and conducting furnace cooling naturally to room temperature; and grinding the cooled powder to obtain the oxysulfide elastic mechanoluminescence material.

The invention discloses a high brightness mechanical luminescent material and a preparation method thereof, and relates to a mechanical luminescent material capable of emitting bright yellow and orange light under the action of mechanical force such as friction force, pressure and impact force, and a preparation method thereof. The invention solves the problem that the conventional aluminate system mechanical luminescent material has a single system and a single color of emitted light. The material has the general formula of M2-x-y-z-wZnwP2O7:Eux,Mny,Lnz, wherein M refers to one or a combination of Ca and Sr, an arbitrary combination of Ca, Sr and Mg, or an arbitrary combination of Ca, Sr and Ba; Ln refers to one or an arbitrary combination of La, Ce, Pr, Nd, Sm, Gd, Tb, Dy, Ho, Er, Tm, Yb and Lu; and x is more than or equal to 0.0001 and less than or equal to 0.20, y is more than or equal to 0.001 and less than or equal to 0.30, z is more than 0 and less than or equal to 0.20, and w is more than 0 and less than or equal to 0.20. The preparation process for the luminescent material is simple, low in cost and pollution-free.

The invention relates to a novel difunctional ultraviolet luminescent material having long afterglow and mechanoluminescence. The novel difunctional ultraviolet luminescent material has a chemical formula of aSrO. bMgO. cSiO2. dMe<III>2O3. xCeO2. yRe2O3, wherein Me<III> represents one or more of Al, Ga, B and V; Re represents one or more of Y, La, Pr, Nd, Sm, Ho, Gd, Sc, Tm, Dy and Lu; a, b, c, d, x and y represent mole numbers; a is greater than or equal to 1 and less than or equal to 3; b is greater than or equal to 0.8 and less than or equal to 1.2; c is greater than or equal to 1.5 and less than or equal to 3; d is greater than or equal to 0.01 and less than or equal to 0.1; x is greater than or equal to 0.001 and less than or equal to 0.1; and y is greater than or equal to 0.001 and less than or equal to 0.3. A preparation method of the novel difunctional ultraviolet luminescent material comprises the following steps of fully grinding a spectroscopically pure parent material, an activator, a coactivator and a fluxing agent, carrying out pre-sintering in air, hydrogen, hydrogen-nitrogen mixed gas and hydrogen-argon mixed gas at a temperature of 500 to 1000 DEG C for 2 to 6 hours, cooling to a room temperature, taking out the cooled materials, fully grinding again, uniformly mixing, carrying out sintering at a temperature of 800 to 1300 DEG C for 4 to 10 hours, taking out the obtained sample, and carrying out grinding. The novel difunctional ultraviolet luminescent material has long afterglow and good stress response sensitivity.

The invention belongs to the technical field of sensor switches and discloses a light control switch composition based on a mechanoluminescence material. The light control switch composition is composed of mechanoluminescence composite materials, photoresistors and control circuits. The mechanoluminescence composite materials transmit light under the effect of dynamic external force. The photoresistors are connected with the control circuits through lead wires and receive the light of the mechanoluminescence, thereby resulting in resistance change. When changed resistance values reach reference values preset by the control circuits, switch functions are realized. The switches comprise embedded type and an un-embedded type. According to the embedded type light control switch, the photoresistor is directly embedded into the mechanoluminescence composite material. The photoresistor and the mechanoluminescence composite material of the un-embedded type light control switch are connected through a light guide medium. According to the light control switch composition, the light control switches are independent of a natural light source and a traditional artificial light source, the application market of the light control switches is expanded, and the light control switches have wide application prospect in aspects such as building environment safety monitoring, earthquake early warning and electromagnetic interference-free control circuits.

The invention discloses a luminescent material and a synthesis method and application thereof. The invention provides the luminescent material which has mechanoluminescence and aggregation-induced emission properties at the same time, and also provides the synthetic method of the luminescent material, and the mechanoluminescence property of the luminescent material can have good application prospects in the fields of stress sensors, anti-counterfeiting marks and the like.

Provided is a display device in a mechanical method using wind, vibration. The mechanoluminescent display device includes a substrate having a predetermined shape, and projections formed with a predetermined pattern on the substrate. The projections are formed of a mixture of a stress luminescent material emitting light by mechanical energy which is applied and a stress transmission material transmitting the mechanical energy applied from the outside to the stress luminescent material.

A sucrose of a conformational polymorph and its manufacturing method are disclosed. The sucrose is a Form II sucrose having a melting point of 140-180° C., and furfuryl alcohol is added into a saturated sucrose solution by a reverse solution method, such that the saturated solution is recrystallized to form a new sucrose. The sucrose of this conformational polymorph has a melting point lower than the melting point of a general Form I sucrose, and the solubility of the Form II sucrose is different from the solubility of the Form I sucrose. Thus the Form II sucrose can be used as an excipient of medicines, sacrificial fiber blood vessel network structure for cell cultivations, or the manufacture of an optical interference wavy device. Since the hydrogen bonds in the molecular structure of the Form II sucrose and the Form I sucrose are different, the mechanoluminescence of the sucrose is affected.

A mechanoluminescence material comprising a matrix of composite metal oxide containing strontium and aluminum, represented by the general formula SrM1Al6O11 (wherein M1 is an alkaline earth metal) or SrM2Al3O7 (wherein M2 is a rare earth metal), and further comprising, as luminescence centers, a metal selected from among rare earth metals and transition metals capable of emitting light when a carrier having been excited by mechanical energy returns to its ground state.

The invention discloses a transparent ceramic material with mechanoluminescence property and a preparation method of the transparent ceramic material, aims to provide a pressure sensing material withthe mechanoluminescence property and belongs to the technical field of the transparent ceramic material. The general formula of chemical composition of the transparent ceramic material is Se(10-y-z)Al(6-x)BxO19:yEu<2+>,zRe<3+>, wherein Re is one or combination of more than one of Dy, Gd and Nd, value ranges of x, y and z are as follows: x is larger than or equal to 0.1 and smaller than or equal to0.5, y is larger than or equal to 0.01 and smaller than or equal to 0.05, and z is larger than or equal to 0.01 and smaller than or equal to 0.05. The luminescence center of the transparent ceramic material is Eu<2+> ions, and the mechanoluminescence effect of the transparent ceramic material can be effectively enhanced by introducing rare earth impurity ions such as Dy<3+>, Gd<3+> and Nd<3+>. The transparent ceramic material has the characteristics of high compressive strength, remarkable mechanoluminescence effect and the like and can be applied to pressure sensing components in pressure sensors.

The invention discloses mechanoluminescence red phosphor with the expression formula of BaZn(1-x)OS:xMn2+, wherein x is larger than or equal to 0.1% and is smaller than or equal to 1.0%, and active ions are Mn2+ ions. The invention further discloses a preparation method of the mechanoluminescence red phosphor. The method comprises the steps that 1, a barium-containing compound, a sulfur-containing compound, a zinc-containing compound and a manganese-containing compound are weighed as raw materials; 2, the compound raw materials weighed in the step 1 are ground to be uniform and roasted in protective atmosphere or vacuum at the temperature of 900-1100 DEG C for 2-10 h; 3, the samples roasted in the step 2 are taken out and ground to obtain the mechanoluminescence red phosphor. The mechanoluminescence red phosphor has an obvious response for mechanical force stimulation, and is visible to naked eyes in daytime through triboluminescence, low in cost and simple in preparation process.