Bioaerosol Capture via Nanostructured Electrostatic Charging
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Solution Overview
Problem
Current bioaerosol-capturing technologies face limitations in achieving high-speed sampling and preserving virus particles without damaging them, leading to inefficiencies in analysis.
Innovation Solution
A nanotechnology-based apparatus that uses a sprayer to charge a buffer solution with a negative voltage, creating droplets that protect aerosol particles, and a capturer with nanostructured discharge members to charge and capture these particles using electrospraying, preventing damage and enhancing concentration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If electrostatic precipitation method is used to capture bioaerosols, then sampling speed is improved, but bioparticles are damaged due to high electric field
Solution Approach 1:
The patent changes the voltage parameter from high voltage to low voltage operation. The discharge members operate at low voltage to charge aerosol particles, avoiding the high electric field damage to bioparticles while maintaining effective electrostatic capture. This parameter change resolves the contradiction between sampling speed and particle integrity.
Solution Approach 2:
The patent introduces buffer solution droplets as an intermediary medium. These droplets are sprayed into the capture chamber and serve as a gentle medium to carry and concentrate aerosol particles without requiring high electric fields, thus protecting bioparticles from damage while achieving effective capture.
2Reliability
If conventional sampling techniques are used, then virus particles are captured, but sampling time is extended
Solution Approach 1:
The patent implements continuous operation of the discharge members that charge aerosol particles as they pass through the capture chamber. This continuous charging and capture process eliminates the need for batch processing or repeated sampling, significantly reducing sampling time while maintaining reliable virus particle capture.
Solution Approach 2:
The patent replaces mechanical filtration or collection methods with an electrostatic charging system. The low-voltage discharge members create electric fields that actively charge and capture virus particles in real-time, replacing slow mechanical accumulation processes with faster electrostatic attraction.
3Productivity
If high voltage is applied to charge aerosol particles, then charging efficiency is improved, but particle damage occurs
Solution Approach 1:
The patent fundamentally changes the voltage parameter from high to low operation. The discharge members are designed to operate at low voltage while maintaining effective charging efficiency through optimized electrode geometry and arrangement. This parameter change eliminates particle damage while preserving charging functionality.
Solution Approach 2:
The patent applies local quality optimization by designing discharge members with specific surface structures or geometries that concentrate electric fields locally at the particle interaction zone. This allows efficient charging at low overall voltage levels, avoiding the need for high voltage that would cause particle damage.
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
The apparatus effectively captures and concentrates bioaerosols at high concentrations without damaging them, improving analysis efficiency by using nanostructured discharge members that charge particles with low voltage, preventing high-voltage damage and maximizing discharge efficiency.
Implementation Method 1
a nozzle configured to charge the buffer solution with a negative voltage so that the charged buffer solution is discharged
Implementation Method 2
discharge members provided with a plurality of nanostructures are provided on a surface of the capturer to charge the aerosol particles
Implementation Method 3
a capturer into which air including the droplets and the aerosol particles is introduced and in a capture solution in which the aerosol particles are captured
Data Source
AI summary
Disclosed is an apparatus for capturing bioaerosols. More particularly, the apparatus for capturing bioaerosols includes a sprayer configured to spray a buffer solution for protecting aerosol particles in a form of droplets; and a capturer into which air including the droplets and the aerosol particles is introduced and in a capture solution in which the aerosol particles are captured, wherein discharge members provided with a plurality of nanostructures are provided on a surface of the capturer to charge the aerosol particles. Due to such a configuration, high discharge efficiency can be anticipated even at a low voltage without damage to aerosol particles.