13 results about "Raman Optical Activity Spectroscopy" patented technology

A liquid (2) measurement chamber extension (10) for spectrophotometric characterization of a liquid (2) in a polymer container (3) by a NIR spectrophotometer (1) or a Raman spectrophotometer (1), the measurement chamber extension (10) comprising an adapter plate (11) having an adapter opening (11'); a container holder (7); and an optical element (5) selected from a mirror and a waveguide; the adapter (11) is configured to cover a measurement chamber (20) of the NIR spectrophotometer (1) or the Raman spectrophotometer (1) in a light-tight manner, the adapter opening (11') surrounding a measurement window of the NIR spectrophotometer (1) or the Raman spectrophotometer (1) to allow the NIR spectrophotometer (1) or the Raman spectrophotometer (1) to measure the spectrophotometric characterization of the liquid (2) in the polymer container (3). a measurement chamber extension (10) configured to provide exposure of the liquid (2) to a measurement light beam emitted from a measurement chamber (20) of a spectrophotometer (1) through the measurement window; the container holder (7) configured to bring the optical element (5) in close proximity to the polymer container (3) containing the liquid (2) to provide loss-free transmission or transflective of the measurement light beam from the optical element (5) to a detector of the NIR spectrophotometer (1) or the Raman spectrophotometer (1), the container holder (7) comprising a clamp (13) configured to hold a tubular section (3a) of the polymer container (3) to enable reproducible measurement conditions.

Provided is a chemically strengthened crystallized glass which has excellent moisture resistance.　With respect to a Raman spectrum of the chemically strengthened crystallized glass obtained by Raman spectrometry, when A1 is the peak area of 380-440 cm-1 and A2 is and the peak area of 520-570 cm-1, the maximum value of A2 / A1 in the depth range of 0-3 µm from the surface is 2.2 or less. The chemically strengthened crystallized glass contains Li2Si2O5 crystals.

To provide a structural component with a highly durable protective film against plasma. [Solution] The structural member 10 comprises a base material 100 and a protective film 200 covering the surface 110 of the base material 100. The protective film 200 mainly contains yttria, and in the Raman spectrum of the protective film 200 obtained by Raman spectroscopy, 370 cm⁻¹ -1 The half-width of the peak at nearby wavenumbers is 23 cm. -1 That's all.

According to an embodiment, an electrode is provided which includes an active material-containing layer, and the active material-containing layer contains an active material, a first conductive agent, and a second conductive agent. The integrated intensity I D of the D band of the first conductive agent in the Raman spectrum G and the integrated intensity I D of the G band G has a ratio I D / I G of 0.5 < I D / I G < 2, and for the second conductive agent, 0 < I D / I G < 0.5. In the constituent material mapping image obtained by Raman spectroscopy for the active material-containing layer, the occupied area S1 of the first conductive agent relative to the occupied area Sa of the active material satisfies 0.1 < S1 / Sa < 1.0, the occupied area S2 of the second conductive agent relative to the occupied area Sa of the active material satisfies 0.8 < S2 / Sa < 10, the distance between the centers of gravity R1 of the first conductive agent relative to the distance between the centers of gravity Ra of the active material satisfies 1.0 < R1 / Ra < 1.5, the distance between the centers of gravity R2 of the second conductive agent relative to the distance between the centers of gravity Ra of the active material satisfies 0.5 < R2 / Ra < 1.0, and the relationship R1 > R2 > R1-2 is satisfied for R1, R2, and the distance between the centers of gravity R1-2 between the first conductive agent and the second conductive agent.

This invention provides a carbon nanotube slurry that has low viscosity, excellent handling properties, and good conductivity when used as an electrode film. [Solution] The solution comprises carbon nanotubes having a fiber length of 50 μm or more, an average diameter of 3 nm to 20 nm, and a peak intensity ratio G / D of 1.0 to 2.6 in Raman spectroscopy; polyvinylpyrrolidone having a weight-average molecular weight of 70,000 or less; and at least one selected from the group consisting of N-methyl-2-pyrrolidone, ethanol, and water. (However, the intensity ratio G / D is the Raman spectrum obtained by the Raman spectroscopy method at 1570 cm⁻¹.) -1 ~1620cm -1 The maximum intensity of the G-band scattered light peak in the range is G, 1320 cm. -1 ~1370cm -1 (When D is the maximum intensity of the D-band scattered light peak within the specified range, this represents the ratio.)

This invention relates to the field of nondestructive testing technology, specifically to a method and system for detecting the phase transition content of thermal barrier coatings. It addresses the problem that existing methods for detecting phase content in thermal barrier coatings suffer from significant errors, reducing the accuracy of characterization. The terahertz time-domain spectroscopy-based method for detecting the phase transition content of thermal barrier coatings provides this invention. It employs an effective medium theory model to directly correct the effective refractive index of the thermal barrier coating under test, obtaining its intrinsic refractive index. This successfully eliminates the interference of porosity variations on the refractive index, avoiding misjudgments caused by porosity changes. Furthermore, it only requires a non-contact terahertz time-domain spectroscopy system to obtain the material state information of the thermal barrier coating under test, eliminating the need for complex destructive sample preparation and overcoming the disadvantages of traditional XRD and Raman spectroscopy, which are destructive and inefficient.

The present invention relates to a Raman spectroscopic analysis method for analyzing trivalent and pentavalent arsenic contamination in soil at the site, and more specifically, to a Raman spectroscopic measurement and analysis method capable of determining trivalent and pentavalent arsenic solely by the ratio of Raman signals in the 300–400 cm-1 band and signals in the 730–830 cm-1 band. According to the present invention, measurement and analysis for detecting trivalent and pentavalent arsenic contamination can be performed by placing several band filters in parallel in front of a photodetector without using an expensive spectrometer for Raman spectroscopy at the site.

A sensor element includes: an element body having a front end and a back end which are both ends in a longitudinal direction, a lateral face which is a face along the longitudinal direction, an outer lead section disposed on the lateral face; and a dense layer which covers part of the lateral face. The outer lead section has a first region which is covered at least in part by the dense layer. The first region contains zirconia. TM ratio is lower than 2, the TM ratio being a ratio Ht / Hm of a peak height Ht of T-phase to a peak height Hm of M-phase of zirconia in a Raman spectrum measured using Raman spectroscopy, and the dense layer has a thickness less than 11 μm.

The application relates to a dual-wavelength Raman-capacitance integrated fertilizer solution component on-line detection device. The Raman spectrum detection module and the capacitance sensor module are electrically connected with a controller respectively. The Raman spectrum detection module comprises a Raman probe, an optical switch, a laser light source, a monochromator, a charge coupled device and a Raman spectrum pipeline. The optical switch, the laser light source, the monochromator and the charge coupled device are electrically connected with the controller respectively. The charge coupled device, the monochromator, the laser light source, the optical switch and the Raman probe are electrically connected in sequence. The probe end of the Raman probe is connected with the Raman spectrum pipeline. The capacitance sensor module comprises a interdigital capacitance pipeline. The Raman spectrum pipeline and the interdigital capacitance pipeline have the same inner diameter and are connected at the end. The application combines the dielectric frequency method and the Raman spectrum method, can give full play to the advantages of both methods, can realize comprehensive, on-line and rapid detection of fertilizer solution component information, and lays a foundation for improving the intelligent level of the water and fertilizer integrated system.

The purpose of the present invention is to provide a carbon nanotube slurry that has low viscosity and excellent handleability, and also has good conductivity when used to form an electrode film. The purpose of the present invention is also to provide a carbon nanotube slurry for electrodes that uses said carbon nanotube slurry, and an electrode film that uses the carbon nanotube slurry for electrodes. One form of the present invention pertains to a carbon nanotube slurry containing: carbon nanotubes that have a fiber length of at least 50 μm, an average diameter of at least 3 nm and at most 20 nm, and a Raman spectroscopy peak intensity ratio G / D of at least 1.0 and at most 2.6; polyvinylpyrrolidone that has a weight average molecular weight of at most 70,000; and at least one selected from the group consisting of N-methyl-2-pyrrolidone, ethanol, and water (in a Raman spectrum obtained using Raman spectroscopy, where the maximum intensity of a G-band scattered light peak in the range of 1570 cm-1 to 1620 cm-1 is G and the maximum intensity of a D-band scattered light peak in the range of 1320 cm-1 to 1370 cm-1 is D, the intensity ratio G / D represents the ratio thereof). Additionally, one form of the present invention pertains to a carbon nanotube slurry containing: carbon nanotubes that have a fiber length of at least 50 μm, an average diameter of at least 3 nm and at most 20 nm, and a BET specific surface area of at least 70 m2 / g and at most 180 m2 / g; polyvinylpyrrolidone that has a weight average molecular weight of at most 70,000; and at least one selected from the group consisting of N-methyl-2-pyrrolidone, ethanol, and water.

This invention provides a carbon nanotube slurry that has low viscosity, excellent handling properties, and good conductivity when used as an electrode film. [Solution] The solution comprises carbon nanotubes having a fiber length of 50 μm or more, an average diameter of 3 nm to 20 nm, and a peak intensity ratio G / D of 1.0 or more and 2.6 or less in Raman spectroscopy, a polyvinyl butyral resin having a weight-average molecular weight of 170,000 or less, and a non-aqueous organic solvent. (However, the intensity ratio G / D is the Raman spectrum obtained by the Raman spectroscopy method at 1570 cm⁻¹.) -1 ~1620cm -1 The maximum intensity of the G-band scattered light peak in the range is G, 1320 cm. -1 ~1370cm -1 (When D is the maximum intensity of the D-band scattered light peak within the specified range, this represents the ratio.)

The present application relates to the technical field of Raman spectrum measurement, and especially to a Raman spectrum method chip test sample holder, which comprises a sample holder body, a chip positioning mechanism, a chip pressing and fixing mechanism and an electrical test mechanism arranged on the sample holder body, the chip positioning mechanism is detachably arranged on the sample holder body through the chip pressing and fixing mechanism, and the electrical test mechanism is symmetrically arranged on both sides of the chip positioning mechanism; wherein the electrical test mechanism comprises a first electrical test interface and a second electrical test interface, the first electrical test interface is used for Raman spectrum detection of the front surface of a chip or the back surface of the chip, and the second electrical test interface is used for Raman spectrum detection of the back surface of the chip or the front surface of the chip. The sample holder can be compatible with Raman spectrum front and back laser tests, realize accurate positioning of laser to an active region, and can synchronously complete optical and electrical parameter measurement.