35 results about "Diamond color" patented technology

The invention discloses an Ia type diamond color quick grading method based on a spectrum. The Ia type diamond color quick grading method based on the spectrum comprises that balanced compound light is emitted on a to-be detected diamond, and the compound light which is reflected through the to-be detected diamond is collected through an integrating sphere. After the light collected by the integrating sphere is split, a charge coupled device (CCD) detector is used for detecting so as to obtain a reflectance spectrum of the to-be detected diamond. After the reflectance spectrum of the to-be detected diamond is uniformized, a nitrogen absorption band is selected from the uniformized reflectance spectrum, and then the area of the nitrogen absorption band is calculated. Compared the area of the nitrogen absorption band with a standard threshold value file, the color of the to-be detected diamond is graded. According to the Ia type diamond color quick grading method based on the spectrum, the nitrogen absorption band is selected from the reflectance spectrum of the collected to-be detected diamond and the area of the nitrogen absorption band is calculated, then the area of the nitrogen absorption band is compared with the standard threshold value file, and so that the grading of the color of the diamond is achieved. The Ia type diamond color quick grading method based on the spectrum is simple in operation, quick and accurate in testing, high in consistency and capable of being widely used in the jewelry identification industry.

The invention discloses a method for improving diamond NV color-center photon producing and collecting efficiency. The exciting effect of a 532 nm light field on a diamond NV color center is achieved by the aid of local effect of hollow optical fiber, and photons emitted by the NV color center are trapped in the optical fiber and are transmitted along the optical fiber; a transmitter lens is added to the other end of the optical fiber to feed back 532nm laser to the optical fiber, and the photons generated by the diamond NV color center are fed back to the optical fiber. The photons emitted by the diamond color center in the optical fiber are collected forward and backward, and the collecting efficiency can approximate to 100%; high photon collecting efficiency is achieved; due to existence of the local efficiency of the optical fiber and a feedback mechanism, the NV color center is excited only by weaker 532nm laser, and higher photon producing efficiency can be achieved; simpleness in structure is achieved, operation is convenient, and application prospect is wider.

The invention relates to a measuring technique for gemstone colors, particularly discloses an automatic measuring method for color grading of diamonds. The method is characterized in that a pavilion area of an under-tested diamond sample is perpendicular to an microscope zoom lens, a light is diffused and enters the under-tested diamond sample; after an amplified signal is amplified by the zoom lens, a beam of light enters an image CCD to form an imaging and displayed in the positioning display. Another beam of light into a spectrometer, an optical signal spectral acquisition is collected and a color coordinates x, y of the under-tested sample is measured. A system program converts the x, y values of the color coordinates into color gradation values which conform to the human eye's grading system automatically. An essential difference between the method of present invention and a currently used color measuring system are as follow: the automatic measuring method for color grading of diamonds can realize the automatic grading of diamonds according to the human eye observation condition and solve problems about a measuring discrepancy and a color grading error which cannot be solved by the conventional diamond color measuring system.

The invention discloses an automatic grading measurement method of diamond color; the method includes steps of adjusting lighting and observing conditions so that the testing environment is consistent with environment observed by human eye; accurately positioning by a microscope zone so that the tested point is completely consistent with the measurement position point of a standard colorimetric stone when diamonds with different grains are measured; collecting an image signal and a spectral signal of a sample waist part and a pavilion and every position closing to the bottom point; contrasting a color coordinate of the measurement sample with the color coordinate of every grade standard colorimetric stone point by point; calculating the differential value between the color coordinate of the measurement sample and the color coordinate of every grade standard colorimetric stone, making the color grade of the measurement sample close to the national standard grade with the minimum differential value of the chromaticity coordinate; if the differential value of the color coordinate is consistent with two grades of standards, closing to the lower grade standard. The method guarantees the consistence of the diamond color grading and human eye observation by the automatic measurement system, simulates the traditional colorimetric environment of human eyes, and reduces the bias of the measurement system caused by different observing conditions.

A microcosmic electrical impedance imaging device based on a diamond NV color center comprises a magnetic field imaging module adopting a diamond ensemble NV as a weak magnetic field detector; a microwave radiation structure module which adopts an omega-shaped radiation structure as a microwave antenna to radiate a microwave magnetic field to the diamond NV color center; a microelectrode module which is used for injecting alternating current into the buffer solution by adopting a cross-shaped iridium-iridium oxide metal electrode with two pairs of electrode arms. According to the invention, the spatial resolution of the existing magnetic resonance electrical impedance imaging is expanded, and the spatial resolution of the electrical impedance imaging is improved to a micron scale to a submicron scale, so an electrical impedance imaging method on a microcosmic scale is realized, and the method is suitable for conductivity imaging of a cell biological sample.

The invention discloses a high-pressure magnetic resonance detection device. The high-pressure magnetic resonance detection device uses a diamond color center structure to serve as a probe structure of a detection module, and the diamond color center is prepared on an anvil surface of the diamond structure of a high pressure device, so that there is no need to occupy the space of a sample cavity,the occurrence of a circumstance that the pressure intensity capable of being provided by the high-pressure magnetic resonance detection device is reduced due to the occupation of the sample cavity space by an induction coil or the diamond color center structure is avoided, and thus the pressure intensity capable of being provided by the high-pressure magnetic resonance detection device is improved to a certain extent.

The invention discloses the polarization system of diamond color center nucleuses. The system comprises an optical control system, a microwave control system, a magnetic field control system and a control and data acquisition system. The optical control system, the microwave control system and the magnetic field control system are independent and are connected through the control and data acquisition system and a correlation component so as to form a diamond color center nucleus polarization system. Through the method of using a laser, a microwave, a magnetic field and a radio-frequency multi-physics field to act on a diamond according to a design sequence, interaction between a diamond color center and surrounding nucleuses can be high-sensitively and rapidly reduced, the high polarization efficiency of the nucleuses can be realized, de-coherence time used for quantum measurement can be prolonged, and support is provided for the technologies of quantum calculating, quantum sensing, quantum transmission and the like based on the diamond color center.

Disclosed is a diamond color grading automatic measuring device. The device includes a microscopic micro-area positioning system and an automatic spectrum acquisition and calculation system. The microscopic micro-area positioning system includes a V-shaped sample trough and a whiteboard. A light source is arranged on one side of the whiteboard. A zoom lens is arranged directly above the whiteboard. Two semi-transparent and semi-reflective mirrors are respectively arranged directly above and on the side of the zoom lens. A CCD detector is arranged on the semi-transparent and semi-reflective mirror directly above the zoom lens. Light reflected by the other semi-transparent and semi-reflective mirror is transmitted to a spectrometer through a signal receiver and a signal line. The output endof the spectrometer is connected to a signal processing computer. The device of the invention adopts microscopic micro-area positioning measurement and selects a measurement area of common characteristics of a to-be-measured diamond so as to eliminate color differences of the diamond of the same color grade caused by the size. The device can rapidly and accurately measure color coordinates of thediamond, and can automatically convert the color coordinates to color grading levels corresponding to a diamond grading system.

The invention relates to the field of nano-diamond color centers, in particular to a crystal planting doping preparation method of a nano-diamond transition metal color center. The method comprises the following steps that a nano-diamond film is grown on the surface of a quartz substrate to form a diamond substrate, and ultrasonic cleaning is carried out after the surface of the diamond substrateis subjected to surface graphite removing treatment; a nano-diamond colloidal solution and transition metal powder are uniformly mixed to prepare a mixed crystal planting solution; the diamond substrate is placed in the prepared mixed crystal planting solution to carry out ultrasonic crystal planting so as to obtain the diamond substrate with uniformly-distributed mixed seed crystals; the nano-diamond film is regrown on the surface of the diamond substrate after crystal planting is completed; and then high-temperature annealing and surface graphite removing treatment are carried out to obtainpure diamond with the transition metal color center. According to the method, the uniformly-distributed mixed seed crystals are planted into the surface of the diamond substrate in an ultrasonic crystal planting manner, and transition metal elements are introduced into a diamond growth environment, so that the preparation of the nano-diamond transition metal color center is conveniently and efficiently realized.

The invention discloses an NV (Nitrogen-Vacancy) color center automatic phase control circular polarization microwave control system and method. The system comprises a diamond sample, a signal sourcesystem, a signal processing system, a microwave radiation system, a control system and the like, wherein the signal source system can provide a microwave signal; after the signal is amplified and passthrough a circular polarization microstrip antenna in the microwave radiation system, since the coaxial feed of the antenna causes a situation that the microwave radiation system can radiate microwaves to the diamond sample, the special shape and size design of the circular polarization microstrip antenna and the regulation of a feed point position can meet a circular polarization condition, andthe rotation direction of polarization is regulated. The system has the advantages of simple experiment environment, small size, small energy consumption and good robustness, is convenient in controlling the overturning among electron spin ground state energy levels, and provides support for diamond color center-based technologies including quantum calculation, quantum sensing, quantum transmission and the like.

The invention discloses a processing method of an improved princess cut diamond, comprising the following steps: (1) cutting the tabletop, (2) grinding the square, (3) grinding the pavilion, (4) processing the face, adopting the method of the present invention The processing method, on the one hand, can process an ordinary round diamond of 70 points into a finished product of one carat diamond, and the value of the diamond can be correspondingly increased by 2000-6000 yuan; After the diamond-shaped kite surface spliced ​​by equilateral triangles, the light refraction effect of the princess-cut diamond is improved, the brightness and fire of the diamond are improved, and the layering of the original princess-cut table is stronger. The brilliance can be increased by 10-15%, making the diamond shine brightly.

The invention discloses a cast-in-place diamond color continuous blind sidewalk which comprises a component A and a component B in a mass ratio of 1: (4-6), a manufacturing method of the cast-in-placediamond color continuous blind sidewalk comprises the following steps: S1, performing base layer treatment; s2, placing a blind sidewalk mold; s3, proportionally mixing the component A and the component B, drying the surface, putting into the blind sidewalk mold, and flattening; and S4, after drying in the step S3, coating the surface with a sealant. The blind sidewalk mold can be laid on a baselayer, then the blind sidewalk is formed, the problem that a position needs to be reserved for traditional blind sidewalk brick paving is thoroughly solved, and therefore the trouble that secondary paving is usually needed due to blocking of traditional blind sidewalk bricks in pavement construction is avoided, the pavement construction labor cost and material loss are greatly reduced, and the construction period is shortened. Meanwhile, the manufacturing method of the cast-in-place diamond color continuous blind sidewalk has the advantages of being short in construction time and curing time,good in abrasion resistance and anti-skid effect and high in antifouling capacity.

The invention relates to a biological neural information in-vivo detection technology, in particular to an in-vivo biological neural information detection method. The detection method comprises the following steps: placing a nano-diamond color center with terahertz electromagnetic field detection capability in organism nerves, irradiating by adopting laser in a visible light-near infrared light band, and polarizing/reading a spin state of the diamond color center, so as to realize detection of terahertz signals in the organism nerves. The nano-diamond color center is doped with heavy ion elements; and the ground state energy level of the heavy ion element color center is split in a terahertz frequency band. The nano-diamond color center provided by the invention can be used as an atomic weight level sensor, has extremely high spatial resolution, also has relatively long coherence time at room temperature, and can realize in-situ and high-sensitivity biological nerve terahertz electromagnetic signal measurement.

The invention discloses an intelligent diamond color grading method, and relates to the technical field of image processing. The method comprises the following steps: step S01, selecting an image preprocessing mode; s02, selecting an assembly; s03, designing an overall structure of the model; s04, selecting a training mode; step S05, carrying out model training; and step S06, carrying out new sample prediction. According to the method, a plurality of images of different angles of the diamond input by a user are preprocessed, a convolutional neural network and a regression device are used as components, a designed model overall structure is used for training a model in a training mode, and an end-to-end model is obtained. A user inputs a plurality of pictures of the diamond at different angles to the model, outputs predicted regression values, compares the regression values with a set threshold value to obtain the color level of the diamond, and replaces manual work to complete the grading task of the diamond color. The diamond color grading efficiency is high, the result is objective and stable, and the diamond color grade can be quickly and accurately given.