Plastic Lab Consumables With Nanoscale Wettability Textures

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Solution Overview

Problem

Existing methods for imparting wettability characteristics to laboratory consumables using hazardous chemicals like PFAS are problematic due to health risks and regulatory constraints, necessitating safer and substance-specific alternatives.

Innovation Solution

A method involving a metallic mould with a textured surface created using nanoscale laser techniques to impart complementary nanoscale surface textures to plastic laboratory consumables, such as pipette tips, providing desired wettability characteristics without harmful chemicals.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If hazardous chemicals like PFAS are used to impart wettability characteristics to laboratory consumables, then suitable wettability characteristics (hydrophilicity/hydrophobicity) are achieved, but health risks and regulatory constraints increase

Engineering Contradiction:

Improvewettability characteristicVSAvoidhealth risk

Core Design Contradiction:

ReliabilityVSObject-affected harmful factors

Solution Approach 1:

The invention changes the approach from chemical modification to physical structural modification. By creating nanoscale surface textures on the plastic material itself, the wettability characteristics are achieved through physical geometry rather than chemical composition, thereby eliminating the need for hazardous chemicals like PFAS while maintaining reliable wettability control

Inventive Principle:

Principle #35Parameter changes

Solution Approach 2:

The invention replaces chemical mechanisms with physical mechanisms. Instead of using chemical compounds to modify surface properties, the patent uses nanoscale surface structuring created through laser texturing or other physical means, substituting chemical action with physical structure to achieve the same wettability effects without harmful substances

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

2Reliability

If surfactants and chemical compounds are added to provide wettability characteristics, then liquid handling properties improve, but manufacturing complexity and changes in mechanical properties increase

Engineering Contradiction:

Improveliquid handling propertyVSAvoidmanufacturing step

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The nanoscale surface texture is created on the plastic material during or before the molding process, so that the wettability characteristics are built into the structure itself rather than added as a separate post-processing step. This preliminary structuring eliminates the need for subsequent chemical treatment steps

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The invention merges the wettability function with the structural function of the plastic material. By incorporating nanoscale textures directly into the plastic matrix during molding, the patent combines the structural integrity provision and wettability control into a single integrated structure, eliminating the need for separate chemical coating steps

Inventive Principle:

Principle #5Merging (Combining)

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

Achieves safe and effective wettability characteristics for liquids, enhancing liquid handling precision and reducing the need for hazardous additives, while allowing large-scale manufacturing of plastic laboratory consumables.

Implementation Method 1

The texturing is carried out using a nanolaser, a femtosecond laser, or a pulsed ultrashort laser

Methodology Applied

Scientific EffectLaser ablation: Laser Ablation

Data Source

PatentUS20260054426A1Plastic laboratory consumable with a prescribed wettability characteristic and method of manufacture thereof

Publication Date: 2026.02.26 SARTORIUS BIOHIT LIQUID HANDLING OY

AI summary

According to an example aspect of the present invention, there is provided a method of manufacturing a plastic laboratory consumable, the method comprising: providing a metallic mould, said metallic mould being a substantial counterpart to a plastic laboratory consumable to be moulded with said metallic mould, texturing a surface of the metallic mould thereby creating a textured metallic mould having a nanoscale surface texture, and moulding a plastic laboratory consumable from a plastic material by using the textured metallic mould such that the plastic laboratory consumable receives a complementary nanoscale surface texture having at least one wettability characteristic for at least a first liquid.