93 results about "Mechanoluminescence" patented technology

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.

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.

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 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.

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 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.

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.

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.