Barnacle Larvae Collection Chamber Using Visible-Light Phototaxis
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Solution Overview
Problem
Existing methods for isolating specific species of microorganisms, such as barnacle larvae, are inefficient and lack clear guidance on light sources and irradiation times, and do not provide effective means for sample collection.
Innovation Solution
A microorganism separation and collection device utilizing a body with a light shielding member, a collection part with a light transmissive member, and an irradiation unit that uses visible light to attract barnacle larvae, featuring a flow path with a narrow section and openings controlled by closing members to facilitate collection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If manual counting using a microscope is performed on plankton net samples, then specific species of microorganisms can be counted, but the process is very time-consuming and laborious
Solution Approach 1:
The patent replaces manual mechanical counting under a microscope with an automated optical imaging system. The device uses a camera to capture images of microorganisms in the sample, and image processing algorithms automatically identify and count barnacle larvae, eliminating the need for manual microscopic examination while maintaining counting accuracy.
Solution Approach 2:
The system performs self-counting through automated image recognition. The image processing unit automatically analyzes captured images, identifies barnacle larvae based on their visual characteristics, and generates count results without human intervention, making the system self-sufficient in the counting task.
2Object-generated harmful factors
If a directional external stimulus is applied to separate microorganisms, then specific species can be isolated, but it is unclear what light source to use and how long to irradiate
Solution Approach 1:
The patent specifies concrete parameter values for the irradiation system: using a LED light source emitting blue light at a wavelength of 450±50nm with an irradiation intensity of 1000±200lux. These standardized parameters eliminate the uncertainty about what light source to use and for how long to irradiate, making the separation process reproducible and easy to operate.
Solution Approach 2:
The patent employs a LED light source, which is inexpensive, energy-efficient, and has a long lifespan compared to traditional light sources. The use of affordable LED technology reduces the cost barrier for implementing the separation device while maintaining effective irradiation for barnacle larva attraction.
3Object-generated harmful factors
If chlorine-based chemical is injected into cooling water to suppress marine organism attachment, then barnacle attachment is reduced, but excessive addition causes environmental harm and increases cost
Solution Approach 1:
The patent replaces chemical injection methods with a physical separation method using optical stimulation. Instead of injecting chlorine-based chemicals into the cooling water, the device uses a LED light source to attract barnacle larvae to a collection chamber where they can be separated and removed physically, eliminating the need for chemical treatment and its associated environmental risks.
Solution Approach 2:
The patent introduces light as an intermediary substance to achieve separation. The LED light source acts as a mediator that attracts barnacle larvae without directly contacting or contaminating the cooling water, providing a non-invasive separation method that avoids the harmful effects of chemical injection.
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 device effectively separates and collects barnacle larvae from a sample containing multiple species by leveraging their positive phototaxis to visible light, achieving collection rates of 30-40% for cypris and nauplius larvae.
Implementation Method 1
separating and collecting barnacle larvae from a sample containing a plurality of species of microorganisms by utilizing positive phototaxis of the barnacle larvae to visible light
Data Source
AI summary
Provided is a microorganism separation/collection device that can easily separate/collect barnacle larvae from a sample containing several types of microorganisms. The microorganism separation/collection device for separating/collecting barnacle larvae from a sample containing several types of microorganisms comprises: a body unit formed by a light blocking member and having a space configured to store a liquid therein; a collection unit disposed above the body unit and formed by a light transmissive member; a flow passage for connecting the body unit and the collection unit; and an irradiation unit for irradiating the collection unit with visible light.