Device and method for measuring micro/nano-sized particles
AssigneeResun (Shenzhen) Tech Co., Ltd.
InventorsKe Liu, Gui Xiong, Zhe Wang
Life of this patent
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Abstract
The device (100) comprises a cavity (101) and at least two microporous membranes (102), wherein the microporous membranes (102) are arranged in series in the cavity (101) and divide the cavity (101) into a plurality of chambers (1011); each of the microporous membranes (102) is provided with micropores (103), and two adjacent chambers (1011) are in communication via the micropores (103); and each of the chambers (1011) is provided with an electrode (1012).
Claims7
A method for measuring micro/nano-sized particles, the method is applied to a device for measuring micro/nano-sized particles, wherein the device comprises a cavity and at least two microporous membranes, wherein the microporous membranes are arranged in series in the cavity and divide the cavity into a plurality of chambers, wherein each of the microporous membranes is provided with micropores, and two adjacent chambers are in communication via the micropores, and wherein each of the chambers is provided with an electrode, and the method allows the micro/nano-sized particles to be measured to continuously pass through micropores of the device with an electrolyte solution, the method comprising:
- acquiring electrical signal data between two electrodes adjacent to each of the micropores in the process of the micro/nano-sized particles passing through each of the micropores;
- determining attribute data of the micro/nano-sized particles according to the electrical signal data;
- wherein determining attributes data of the micro/nano-sized particles according to the electrical signal data comprising:
- dividing the electrical signal data into a plurality of signal units;
- comparing each the signal unit with the corresponding signal unit of a standard signal respectively, to obtain a contrast coefficient between the electrical signal data and the standard signal;
- acquiring the sphericity value corresponding to the standard signal with the highest contrast coefficient as the sphericity value of the micro/nano-sized particles.
A method for measuring micro/nano-sized particles, the method is applied to a device for measuring micro/nano-sized particles, wherein the device comprises a cavity and at least two microporous membranes, wherein the microporous membranes are arranged in series in the cavity and divide the cavity into a plurality of chambers, wherein each of the microporous membranes is provided with micropores, and two adjacent chambers are in communication via the micropores, and wherein each of the chambers is provided with an electrode, and the method allows the micro/nano-sized particles to be measured to continuously pass through micropores of the device with an electrolyte solution, the method comprising:
- acquiring electrical signal data between two electrodes adjacent to each of the micropores in the process of the micro/nano-sized particles passing through each of the micropores;
- determining attribute data of the micro/nano-sized particles according to the electrical signal data;
- wherein determining attributes data of the micro/nano-sized particles according to the electrical signal data comprising:
- inputting the electrical signal data into a machine learning model, wherein the machine learning model is obtained by training based on electrical signal data between two adjacent electrodes when a micro/nano-sized object with an asymmetric shape passes through the micropores;
- acquiring the three-dimensional shape of the micro/nano-sized particles predicted by the machine learning model based on the electrical signal data.
Dependencies are inferred from the claim text.