Capillary Array (CA)
Capillary Array (CA)
Hole diameter is the diameter of each Single Capillary (hole).
- Typical Value: 4um,6um,25um,100um
- Min Value: 1-2um
- Max Value: 200um
The hole diameter influences the sample volume, the electric field strength, and the heat dissipation.
Thickness (or Length)
The height of the capillary array, usually measured in millimeters.
- Typical Range: 0.5mm - 1mm
- Lower Range: 0.20 - 0.5mm
Length to Diameter Ratio (L/D)
L/D ratio in capillary array is the ratio of the length to the diameter of the capillaries.
- Typical Value: 50 - 150
- Max Value: 200
A longer and thinner capillary may require more sophisticated fabrication techniques and materials, which can increase the production cost and complexity
Single Capillary (Hole) Shape
Array Shape Available:
- Typical: dia25mm - dia50mm
- Max: dia125mm
- Min: dia10mm
Open Area Ratio (OAR)
OAR ratio is the open area ratio of a capillary array, which is defined as the ratio of the cross-sectional area of the capillaries to the total area of the array.
- Typical Range: 50% - 65%
- High Range: 70% - 80%
Material & Fabrication
- Material: Borosilicate Glass
- Heat Resistance: up to 500°C
- Effective Area > 90% of the dimension
Using Capillary array as a filter
High Resolution Sctinllator Plate
The liquid scintillator is a mixture of organic solvents and fluorescent molecules that emit light when they are excited by radiation. The liquid scintillator is injected into the capillary holes using a syringe or a pump, and then sealed with epoxy resin or silicone rubber.
The capillary array then acts as an image converter, which transforms the radiation image into a light image. When a neutron or a gamma ray hits the liquid scintillator inside a capillary, it produces a flash of light that travels along the capillary by total internal reflection. The light reaches the end of the capillary, where it is detected by a photodetector, such as a photomultiplier tube (PMT) or a silicon photomultiplier (SiPM). The photodetector converts the light signal into an electrical signal, which can be processed and analyzed by a data acquisition system. By measuring the intensity and shape of the light pulses from each capillary, the detector can determine the type, energy, and direction of the incident radiation.