Electrochemical pH Modulation for High Vertical Resolution Biospecimen Imaging
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current imaging methods for biospecimens require expensive standalone systems or high-cost add-on equipment, limiting their accessibility and compatibility with existing microscopic instruments, especially for achieving high vertical resolution in biological applications.
Innovation Solution
The method involves labeling biospecimens with pH-sensitive labels and using electrochemical pH modulation by applying a potential or current to an electrode in a buffered solution containing a pH modulating agent, which causes a pH change adjacent to the electrode, triggering an optical signal for imaging, compatible with existing microscopic instruments.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If expensive standalone imaging systems or high-cost add-on equipment are used, then high vertical resolution imaging is achieved, but system cost and complexity increase
Solution Approach 1:
The patent replaces complex optical/mechanical imaging systems with a simplified electrochemical system. Instead of using confocal microscopy with pinhole apertures or TIRF with specialized optical components, the invention uses an electrode with pH modulating agents that create localized pH changes to activate pH-sensitive fluorescent labels, achieving similar vertical resolution through electrochemical means rather than optical complexity
Solution Approach 2:
The patent changes the parameter used for localized imaging from optical properties (in confocal/TIRF) to electrochemical pH parameters. By applying potential or current to the electrode, the pH modulating agents undergo redox reactions that locally change pH, which in turn activates or deactivates pH-sensitive fluorescent labels, enabling vertical resolution through pH parameter control rather than optical parameter control
2Measurement precision
If specialized optical and physical components are used, then localized imaging with high vertical resolution is achieved, but equipment cost increases
Solution Approach 1:
The patent employs inexpensive pH modulating agents (such as quinones, hydroquinones, or other redox-active compounds) that can be easily synthesized or obtained and are consumed in the electrochemical reactions. These cheap chemical agents replace expensive optical components, and their temporary consumption during imaging cycles mirrors the disposable nature principle, achieving cost-effective localized imaging
Solution Approach 2:
The patent substitutes expensive specialized optical components (confocal pinholes, TIRF prisms, SPRF coupling structures) with a simple electrode and electrochemical pH modulating agents. The electrode is a basic electrochemical component, and the pH modulating agents are inexpensive chemicals, together replacing costly optical hardware while maintaining the ability to achieve localized high-vertical-resolution imaging
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
This approach enables localized imaging with high vertical axial resolution, similar to confocal microscopy or TIRF microscopy, using electrochemical pH modulation to produce a pH modulation zone, allowing imaging of biospecimens with existing fluorescent microscopes at a lower cost and increased accessibility.
Implementation Method 1
applying a potential or a current to the electrode, whereupon the pH modulating agent causes a change in the pH value in a zone adjacent to the surface of the electrode
Implementation Method 2
causing the pH-sensitive label within the zone to produce an optical signal
Implementation Method 3
the microstructures, when present, define a volume between the biospecimen and the surface, through which the pH modulating agent diffuses
Data Source
Figure 1A
Figure 1B
Figure 2
AI summary
Provided are methods for imaging a biospecimen, which involves the use of electrochemical pH modulation in combination with pH-sensitive labels to achieve localized imaging with a high vertical axial resolution.