35 results about "Relaxation frequency" patented technology

One embodiment of the present application sets forth a method for detecting cancerous cells in a sample of excised tissue. The method includes a first subset of electrodes included in an electrode array measuring, at a first operating frequency, a first impedance of a first section of the sample. The method also includes computing a first Cole relaxation frequency for the first section of the sample based on the first impedance. The method also includes determining that the first section of the sample contains cancerous cells based on the first Cole relaxation frequency.

Sensor and process for measuring mass of water on a sheet forming fabric. The sensor includes a microwave element positionable to couple an electromagnetic field into a stock layer to be measured, and a microwave signal generator coupled to the microwave element to generate, in the microwave element, a microwave signal having a frequency lower than a relaxation frequency of water. The instant abstract is neither intended to define the invention disclosed in this specification nor intended to limit the scope of the invention in any way.

The invention discloses a method for measuring the pressure intensity of an excitable gas (diatomic or polyatomic molecular gases, such as natural gas, carbon dioxide, chlorine) pressure vessel. The method comprises the following steps: placing two ultrasonic probes with frequencies f1 and f2 and a thermocouple in the gas pressure vessel, and obtaining the measurement values of acoustic absorptioncoefficients alpha(f1) and alpha(f2) on two selected frequency points f1 and f2 and measurement values of sound speeds c(f1) and c(f2) through the two ultrasonic probes, wherein the measurement values are used for the synthesis of the acoustic relaxation frequency fm of the gas; measuring the current gas temperature measured through the thermocouple, measuring the gas reference acoustic relaxation frequency f0 when the current gas temperature is measured to be 1 standard atmospheric pressure (i.e., 1 atm = 101.325 kPa) in a manner of table look-up; and obtaining the pressure intensity of thegas vessel through the synthesized acoustic relaxation frequency fm and the reference acoustic relaxation frequency f0. The method is advantageous in online detection, lossless detection, quick response, miniature low power consumption, simple composition, stable long-time operation, and high measurement precision.

One embodiment of the present application sets forth a method for predicting recurrence of cancerous cells in a patient that includes measuring, by a first subset of electrodes included in an electrode array operating at a first frequency, a first impedance of a first section of a first sample of tissue excised from the patient, computing a first Cole relaxation frequency for the first section of the first sample based on the first impedance, and generating a first prediction relating to cancerous cells in the patient based at least in part on the first Cole relaxation frequency.

The application discloses a nanocrystalline alloy magnetic core and a preparation method thereof. In the nanocrystalline alloy magnetic core provided by the present application, the nanocrystalline alloy magnetic core is obtained by subjecting a quenched alloy material to multi-field coupled heat treatment; the quenched alloy material includes at least one compound of the chemical formula shown in Formula I. The nanocrystalline alloy magnetic core has high relaxation frequency and low high frequency loss. And the present application provides a multi-field coupling of thermal field, magnetic field and stress field and real-time regulation of the high-frequency characteristics of the nanocrystalline magnetic core, thereby increasing the relaxation frequency of the nanocrystalline alloy magnetic core and reducing high-frequency loss.

The general field of the invention is that of gyrolasers comprising at least one ring-shaped optical cavity comprising at least three mirrors, a solid state amplifying medium pumped by a laser diode whose optical emission power is determined by a current supply source, the cavity and the amplifying medium being such that two so-called contra-rotating optical modes propagate in opposite directions to each other within the said optical cavity, the gyrolaser being a class B gyrolaser, the gyrolaser also comprising means of measuring the difference in optical frequency existing between the two optical modes. The gyrolaser comprises means of measuring the total optical power circulating in the optical cavity and first means of control of the current delivered by the supply source in such a way as to maintain the total optical power substantially constant in a narrow spectral band centred on the relaxation frequency of the laser.

The invention discloses a preparation method of a composite amorphous soft magnetic alloy with excellent (alternating current) AC stability, the composite amorphous soft magnetic alloy composition is Fe38.45Co38.45Cu0.6Nb2.5Si11B9-Ni71P29, and the preparation method is as follows: firstly, an amorphous soft magnetic alloy thin strip is prepared, then a chemical plating nickel phosphorus plating bath is prepared, and the composite amorphous soft magnetic alloy is prepared by chemical deposition method. The advantages are that: the high frequency performance of the composite amorphous soft magnetic alloy made by the chemical deposition method is superior, the relaxation frequency is up to 3.75MHz, the quality factor is 77.5 at 1MHz, the initial magnetic permeability is kept at 7700 basically and constantly in the frequency range of 1kHz-1MHz and under the condition of the magnetic field of 0.05 A / m, and the preparation method is simple in process, easy in operation, low in cost, and suitable for mass production.

The invention discloses a method for measuring relaxation behaviors of counter ion pairs in a polyelectrolyte brush. The method comprises the following steps: bonding an initiator to a gold chip by chemical reaction; chemically grafting a monomer onto the gold chip by a radical polymerization method to obtain a gold chip with a polyelectrolyte brush; putting the gold chip with the polyelectrolytebrush in a sample cell and soakng it with a solution; obtaining the relaxation frequency of the counter ion pairs inside the polyelectrolyte brush in the solution by cooperatively using an electrochemical workstation and a quartz crystal microbalance electrochemical module. By adopting the method of cooperatively using the electrochemical workstation and the quartz crystal microbalance electrochemical module and by grafting the polyelectrolyte brush on the gold chip, on one hand, a quartz crystal microbalance can be utilized to measure the mass and viscoelasticity changes of polyelectrolyte brush films in different sodium chloride solutions in real time; on the other hand, the electrochemical workstation can also be utilized to simultaneously measure the relaxation behaviors of the counterion pairs inside the polyelectrolyte brush in the different solutions.

The invention discloses a method for measuring the pressure intensity of an excitable gas (diatomic or polyatomic molecular gases, such as natural gas, carbon dioxide, chlorine) pressure vessel. The method comprises the following steps: placing two ultrasonic probes with frequencies f1 and f2 and a thermocouple in the gas pressure vessel, and obtaining the measurement values of acoustic absorptioncoefficients alpha(f1) and alpha(f2) on two selected frequency points f1 and f2 and measurement values of sound speeds c(f1) and c(f2) through the two ultrasonic probes, wherein the measurement values are used for the synthesis of the acoustic relaxation frequency fm of the gas; measuring the current gas temperature measured through the thermocouple, measuring the gas reference acoustic relaxation frequency f0 when the current gas temperature is measured to be 1 standard atmospheric pressure (i.e., 1 atm = 101.325 kPa) in a manner of table look-up; and obtaining the pressure intensity of thegas vessel through the synthesized acoustic relaxation frequency fm and the reference acoustic relaxation frequency f0. The method is advantageous in online detection, lossless detection, quick response, miniature low power consumption, simple composition, stable long-time operation, and high measurement precision.

The invention discloses a preparation method of a composite amorphous magnetically soft alloy material. The composite amorphous magnetically soft alloy material comprises components of Fe67Co18Si11B4-Ni71P29. The preparation method comprises the following steps: firstly, an amorphous magnetically soft alloy thin strip is prepared; then, chemical nickel-phosphorus plating liquid is prepared; and the composite amorphous magnetically soft alloy is prepared by a chemical deposition method. The composite amorphous magnetically soft alloy material has the following advantages: the composite amorphous magnetically soft alloy prepared through the chemical deposition method is excellent in performance; the initial permeability can be increased by one order of magnitude under the conditions of frequency of 1 kHz-1 MHz and alternating magnetic field of 0.05 A / m, and is basically invariable by being kept at 1870; and the relaxation frequency and the quality factor are obviously improved compared with a traditional alloy. The composite amorphous magnetically soft alloy is simple in process, convenient to operate, low in cost and suitable for large-scale industrial production.

A touch sensor configured to sense a touch object is provided. The touch sensor includes a sensing device and a sensing circuit. The sensing device includes a substrate, a sensing electrode, a sensing common electrode and a shielding layer. The sensing electrode and the sensing common electrode are disposed on the substrate. The shielding layer is disposed on the sensing electrode and the sensing common electrode. The sensing circuit is electrically connected to the sensing device. The sensing circuit includes a resistor device. A relaxation frequency of a relaxation signal of the touch sensor is determined according to a resistance of the resistor device and / or a parasitic resistance of the sensing device. A pulse difference of the relaxation signal is changed by the touch object. The touch object is a conductor. An electronic paper display panel including the foregoing touch sensor is also provided.

The invention provides a touch sensor for sensing a touch object. The touch sensor comprises a sensing element and a sensing circuit, wherein the sensing element comprises a substrate, a sensing electrode, a sensing common electrode and a shielding layer; the sensing electrode and the sensing common electrode are arranged on the substrate; the shielding layer is disposed on the sensing electrode and the sensing common electrode; the sensing circuit is electrically connected to the sensing element; the sensing circuit includes a resistive element; the relaxation frequency of the relaxation signal of the touch sensor depends on the resistance value of the resistance element and / or the parasitic resistance value of the sensing element; and the pulse wave variation value of the relaxation signal is changed by touching an object. The touch object is a conductor. In addition, the invention also provides an electronic paper display panel and an electronic paper display device comprising the touch sensor.