Conical Nested Magnet Assembly for Compact 1.5 T Microscopy
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Solution Overview
Problem
Existing magnetic devices for optical microscopy (OM) and scanning probe microscopy (SPM) fail to generate high magnetic field intensity while being small enough to fit the geometry of these experiments, typically requiring a magnetic field above 1 Tesla and dimensions less than 10 mm.
Innovation Solution
A magnet device comprising a first magnet with a conical shape received in a second magnet with complementary anticone shape, generating a magnetic field of at least 1.3 T, aligned along a longitudinal axis, and minimizing stray fields through conical alignment and material selection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Force
If a conventional magnet is used to generate high magnetic field intensity (above 1 Tesla), then the magnetic field strength is sufficient for OM and SPM applications, but the magnet size becomes too large to fit the geometry of microscopy experiments (typically requiring dimensions less than 10 mm)
Solution Approach 1:
The magnet is divided into two separate components: a first magnet and a second magnet, each with complementary conical shapes. This segmentation allows the magnetic field generation function to be distributed across two smaller components that can fit within the constrained geometry of microscopy instruments while collectively producing the required high magnetic field intensity above 1 Tesla
Solution Approach 2:
The first magnet with conical shape is received within the second magnet with complementary anticone shape, creating a nested configuration. This nesting arrangement maximizes the magnetic field generation capability within a compact overall volume, allowing the combined structure to produce high magnetic field intensity (at least 1.3 T, preferably at least 1.4 T, more preferably at least 1.5 T) while maintaining dimensions suitable for microscopy applications
2Force
If existing magnetic modules consisting of two oppositely magnetized components are used, then the magnetic field is generated, but the intensity is insufficient (below 1 Tesla) and the dimensions do not match the required small size for OM or SPM
Solution Approach 1:
The invention changes the geometric parameters of the magnet components by using conical and complementary anticone shapes instead of conventional cylindrical or planar forms. This parameter change in geometry, combined with specific magnetization directions, enables the generation of high magnetic field intensity (at least 1.3 T, preferably at least 1.4 T, more preferably at least 1.5 T) while maintaining compact dimensions that are adaptable to microscopy instrument geometries
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 achieves a strong magnetic field intensity of up to 1.5 T from an opening, minimizing device size and stray fields, suitable for OM and SPM applications without electrical connections, and compatible with scanning probe microscopy instruments.
Implementation Method 1
the first magnet and the second magnet are oppositely magnetized, and the first magnet, the second magnet and the opening are aligned along a longitudinal axis of the magnet device, so that the magnetic device generates a magnetic field from the opening
Data Source
Figure 1
Figure 2a~2b
Figure 3a~3c
AI summary
The present relates to a magnet device for a microscopy instrument comprising a first magnet received in a second magnet. The first magnet and said second magnet have complementary conical shapes so that said first magnet is arranged for being received in said second magnet. The second magnet has an opening leading to said first magnet when said first magnet is received in said second magnet. When the first magnet is received in the second magnet, the first magnet and the second magnet are oppositely magnetized, and the first magnet, the second magnet and the opening are aligned along a longitudinal axis of the magnet device, so that the magnetic device generates a magnetic field from the opening. The invention further relates to a microscope comprising said magnet device and a method for retrofitting a microscope instrument using said magnet device.