Nanoscale SiNT Probe for Single-Cell Cancer Detection
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Solution Overview
Problem
Current methods for detecting cancerous transformations in single cells lack high spatial resolution and non-invasive capabilities, especially for cells with weak bioelectrical signals, and are not suitable for a wide range of cell types.
Innovation Solution
An electromechanical system comprising an aspirating mechanism, an electrical measurement mechanism, and a processing mechanism that uses a tungsten-supported silicon nanotube (SiNT) probe to extract and hold single cells, apply mechanical aspiration, and measure electrical responses before and after aspiration to detect cancerous states based on differences in electrical impedance and phase.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional electrical probes are used for recording bioelectrical signals, then the recording can be performed, but the spatial resolution is insufficient and invasive effects occur
Solution Approach 1:
The patent replaces conventional mechanical/electrical probes with a nanoscale electrical probe consisting of silicon nanowires or silicon nanotubes. This substitution enables non-invasive recording by utilizing the unique electromechanical properties of nanomaterials, which can detect bioelectrical signals at the nanoscale without mechanical contact that would damage the cell
Solution Approach 2:
The patent changes the physical parameters of the probe by using nanoscale dimensions (silicon nanowires/nanotubes) instead of conventional probe sizes. This parameter change enables the probe to achieve both high spatial resolution and non-invasive operation by matching the scale of cellular structures and avoiding mechanical damage
2Adaptability or versatility
If conventional electrical recording methods are used, then action potentials can be measured, but the method is only suitable for electrically active cells with sharp responses
Solution Approach 1:
The patent creates a universal detection platform using nanoscale electrical probes that can measure bioelectrical signals across diverse cell types including neurons, cardiomyocytes, and non-excitable cells. The probe's nanoscale dimensions and electromechanical sensing mechanism enable it to detect weak bioelectrical signals from any cell type, not just electrically active ones
Solution Approach 2:
The patent replaces conventional electrical recording methods with nanoscale electromechanical sensing. This substitution enables detection of weak bioelectrical signals from non-excitable cells by utilizing the high sensitivity of nanoscale materials to electrical fields at the cellular level
3Measurement precision
If label-free non-invasive detection is implemented, then cancer diagnosis accuracy improves, but the device complexity increases
Solution Approach 1:
The patent implements label-free detection where the nanoscale electrical probe directly measures intrinsic bioelectrical signals of cells without requiring external labels, dyes, or complex preparation. The probe's nanoscale dimensions enable it to detect cancer-related electrical changes naturally occurring in cells, simplifying the overall detection system
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables label-free, non-invasive cancer diagnosis with single-cell resolution by accurately distinguishing between normal and cancerous cells through significant changes in electrical responses during mechanical deformation.
Implementation Method 1
apply a mechanical aspiration to the held single cell by applying a suction force to the held single cell
Implementation Method 2
measure a first set of electrical responses from the held single cell corresponding to the applied set of electrical signals
Implementation Method 3
damping of electrodynamic microtubule oscillations
Data Source
AI summary
An electromechanical system for detecting cancerous state of a single cell. The electromechanical system includes an aspirating mechanism, an electrical measurement mechanism, and a processing mechanism. The aspirating mechanism is configured to extract a single cell from a suspension of a plurality of suspended biological cells, hold the extracted single cell, and apply a mechanical aspiration to the held single cell by applying a suction force to the held single cell. The electrical measurement mechanism is configured to apply a set of electrical signals to the single cell before and after applying the mechanical aspiration and measure two sets of electrical responses from the held single cell corresponding to the applied set of electrical signals before and after applying the mechanical aspiration The processing mechanism, including a data processor, configured to detect cancerous state of the single cell based on a difference between the two sets of electrical responses.