Planar Spherical Ion Trap for Microfabrication
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional spherical RF Paul ion traps have low ion trapping efficiency and are not compatible with microfabrication techniques, limiting their compactness and mass production potential.
Innovation Solution
A spherical ion trap with a planar electrode structure formed by micromachining an electrically insulating substrate, featuring RF and ground electrodes that create a trapping potential field for efficient ion trapping, allowing for high efficiency and compatibility with microfabrication.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If conventional spherical RF Paul ion traps are used, then ion trapping is achieved, but ion trapping efficiency is low and compatibility with microfabrication is poor
Solution Approach 1:
The patent transitions from conventional three-dimensional spherical electrodes to a planar two-dimensional electrode configuration. The planar electrodes are formed on a substrate using microfabrication techniques, creating a flattened version of the spherical trap geometry that maintains trapping functionality while enabling mass production through standard semiconductor manufacturing processes
Solution Approach 2:
The patent replaces the mechanical machining of three-dimensional spherical electrodes with a planar electrode structure fabricated using microfabrication techniques. This substitution allows for precise control of electrode geometry through photolithography and thin-film deposition, achieving both high manufacturing compatibility and improved ion trapping efficiency through better geometric precision
2Productivity
If conventional spherical ion traps are used, then ion trapping is achieved, but compactness and mass production potential are limited
Solution Approach 1:
The patent flattens the three-dimensional spherical trap into a two-dimensional planar structure that can be fabricated on a substrate using standard microfabrication processes. This dimensional reduction enables the trap to be integrated into compact arrays and manufactured in large quantities using batch processing techniques, significantly improving both compactness and mass production potential
3Ease of manufacture
If planar electrode structure is used, then compatibility with microfabrication and mass production is improved, but ion trapping efficiency must be maintained
Solution Approach 1:
The patent creates a planar configuration where multiple electrodes are arranged in flat layers on a substrate. This geometry maintains the necessary electric field gradients for effective ion trapping while allowing all electrodes to be fabricated simultaneously using photolithography and thin-film deposition, ensuring high manufacturing precision and consistency across mass-produced devices
Solution Approach 2:
The patent optimizes the planar electrode geometry by carefully controlling parameters such as electrode spacing, area, and positioning relative to the ion aperture. These parameter adjustments ensure that the planar structure generates sufficient trapping potential while remaining compatible with standard microfabrication process capabilities
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 spherical ion trap achieves high ion trapping efficiency and can be mass-produced at low cost with minimal geometrical imperfections, suitable for compact and field-deployable applications such as atomic clocks.
Implementation Method 1
forming a trapping potential field in the ion trapping region by the DC and RF voltages
Implementation Method 2
trapping the ions in the ion trapping region in response to forming the trapping potential field from the DC and RF voltages
Data Source
AI summary
A spherical ion trap includes a substrate and an ion aperture; two RF electrodes in electrostatic communication with an ion trapping region; RF ground electrodes in electrostatic communication with the ion trapping region; and the ion trapping region bounded by opposing RF electrodes and the RF ground electrodes, such that: the ion trapping region is disposed within the ion aperture and receives ions that are selectively trapped in the ion trapping region in response to receipt of DC and RF voltages by the RF electrodes, and receipt of the DC voltages by RF ground electrodes, and the first RF electrode, the second RF electrode, the RF ground electrodes, and the ion trapping region are disposed in the same plane within the ion aperture.