Neutral Gas Cluster Ion Beam Surface Processing
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional gas cluster ion beam (GCIB) processing techniques often result in undesirable surface damage, rough interfaces, and drug coating weight loss due to charge-induced effects and intermediate size cluster issues, limiting the smoothness and quality of surface processing, especially in semiconductor and optical materials.
Innovation Solution
A method to form high purity neutral gas cluster beams by accelerating gas cluster ions, promoting fragmentation, and removing charged particles to create an accelerated neutral beam with energies between 1 eV and several thousand eV, which is used to treat surfaces without inducing charge-related damage, thereby improving smoothness and adhesion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If gas cluster ion beam (GCIB) processing is used to treat surfaces, then surface smoothing and adhesion improvement are achieved, but surface damage and rough interfaces occur due to charge-induced effects and intermediate size cluster issues
Solution Approach 1:
The patent extracts and removes charged particles from the gas cluster ion beam through electrostatic deflection plates, creating a neutral beam that processes surfaces without charge-induced damage while preserving the beneficial smoothing effects of gas cluster bombardment
Solution Approach 2:
The patent changes the charge state parameter of the beam from charged to neutral by using electrostatic deflection to remove ions, thereby eliminating charge-induced surface damage while maintaining the physical bombardment effects that produce smooth surfaces
2Reliability
If conventional GCIB processing is used, then surface treatment is achieved, but drug coating weight loss occurs due to charge-induced effects
Solution Approach 1:
The patent extracts charged particles from the beam using electrostatic deflection, creating a neutral beam that treats drug coatings without causing charge-induced weight loss while maintaining effective surface treatment and coating adhesion
3Productivity
If gas cluster ion beam is used for surface processing, then processing capability is improved, but charge-induced damage limits the quality of surface processing
Solution Approach 1:
The patent removes charged particles from the gas cluster beam through electrostatic deflection, preserving the high processing capability of gas cluster bombardment while eliminating charge-induced damage that limits surface processing quality
4Quantity of substance
If intermediate size clusters are present in the beam, then beam intensity is maintained, but rough interfaces and surface damage occur
Solution Approach 1:
The patent uses electrostatic deflection to remove charged clusters of all sizes from the beam, creating a neutral beam that maintains intensity through neutral gas cluster bombardment while eliminating rough interfaces caused by charged intermediate size clusters
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 method achieves superior surface smoothing, adhesion, and drug elution control, reducing the risk of surface damage and weight loss, and produces high-quality interfaces and coatings with improved properties in semiconductor and optical materials.
Implementation Method 1
accelerating the gas cluster ions to form an accelerated gas cluster ion beam along a beam path within the reduced pressure chamber
Implementation Method 2
deflecting the accelerated gas cluster ion beam with electrostatic deflection plates to remove the charged particles from the beam path
Data Source
AI summary
A method for Neutral Beam irradiation derived from gas cluster ion beams and articles produced thereby including optical elements.