PATENT CLAIM ANALYSIS

Application Number: 15769881
Application Type: Utility
Filing Date: 2018-04
Publication Date: 2018-10
Patent Classification: ["850", "005000"]

Abstract:
This document relates to a method of performing surface measurements on a surface of a sample using a scanning probe microscopy system. The system comprises a sample support structure for supporting a sample, a sensor head including a probe comprising a cantilever and a probe tip arranged on the cantilever, and an actuator for scanning the probe tip relative to the substrate surface for mapping of the nanostructures. The method comprising the steps of: vibrating the cantilever using an actuator and moving the probe relative to the substrate surface for performing said scanning. The probe is held at a distance to the substrate surface such as to allow contact at a plurality of intermittent contact moments between the probe tip and the surface during said vibrating of the cantilever. The steps of vibrating of the cantilever and moving of the probe are performed concurrently. For performing the surface measurements, the method comprises obtaining a sensor signal indicative of a position of the probe tip during said scanning, and analyzing this signal by quantifying two or more frequency components in a Fourier transform for determining an estimate of a force value of a force between said substrate surface and said probe tip during said contact moments.

Claim (Index 3):
Method according to  claim 2 , wherein for determining the force value during said contact moments, during said analyzing the sensor signal is sampled into a plurality of samples, each sample corresponding to a sample moment, wherein the recursive filter applies the following augmented system state model for including said internal state of the probe and said dynamic state model: ( x k + 1 p k + 1 ) = [ A B \ue89e C ^ O A ^ ] \uf613 A _ \ue89e ( x k p k ) + [ B 2 O ] \uf613 B _ \ue89e f k d + ( \u03c9 k \u03c9 ^ k ) ( y k O N \u00d7 1 ) = [ C D 1 \ue89e C ^ O C ^ ( 2 ) ] \uf613 C _ \ue89e ( x k p k ) + [ D 2 O ] \uf613 B _ \ue89e f k d + ( v k v ^ k ) , \n \ue89e f k ts = [ O 1 \u00d7 n C ^ ] \ue89e ( x k p k ) wherein: x k  is an internal state of the system at sample moment k; x k+1  is an internal state of the system at sample moment k+1 subsequent to sample moment k; p k  is a dynamic state of the influence of the force between the probe tip and the substrate surface at sample moment k; p k+1  is a dynamic state of the influence of the force between the probe tip and the substrate surface at sample moment k+1; \u03bd k , {circumflex over (\u03bd)} k , \u03c9 k  and {circumflex over (\u03c9)} k  represent noise factors; f k d  represents a dithering signal to the internal state; f k ts  represents the force value of the force between the probe tip and the substrate surface; A is the state matrix of the system; B 1  and B 2  are the input matrices for respectively force value of the force between the probe tip and the substrate surface and the dithering signal; D 1  and D 2  are the feed forward matrices for respectively force value of the force between the probe tip and the substrate surface and the dithering signal; O is the null-matrix; C is the output matrix; \u00c2 and \u0108 are respectively the dynamic state matrix and the dynamic output matrix of the dynamic state model for modelling the influence of the force between the substrate surface and the probe tip on said internal state of the probe; and \u0108 (2)  is the output matrix of a Tikhonov type regularization rule.

Metadata:
- Claim Count in Document: 30.0
- Percentile: 91.0
- Lexical Diversity: 2.63415
- Patent Class: 850.0
- Transitional Phrase Type: none
- Component Type: 0
- Foreign Priority: True
- Related Applications: ['15326237', '10953195', '11844571', '11712840', '15330929']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.7120905298929632
- 35 USC 102 Novelty (BERT): 0.5008382057160016
- Combined Prediction Score: 0.6909652974752671
- Mean Citation Score: 243.622246
- Max Citation Score: 262.52264
- Similarity Product: 184.7246183476067

Labels:
- Claim Label 101: 1
- Claim Label 102: 1
- Claim Label 103: 1
- Claim Label 112: 1
- Combined Label: 1
- Label 101 Adjusted: 1

Dataset: test