Small-Size Sapphire Tubes Polished Wear-Resistant for
High-Temperature Pressure Sensors
Sapphire tubes small size are precision tubular components
fabricated from high - purity single - crystal sapphire. They are
well - suited for high - end fields such as microfluidics, laser
optics, sensors, and medical devices. ZMSH offers customized
services, allowing for the adjustment of parameters including
inner/outer diameter, wall thickness, surface finish, and crystal
orientation to meet the requirements of different application
scenarios. Moreover, it supports rapid delivery for small - batch
orders, ensuring the stable operation of the products in extreme
environments.
Key Characteristics
1. Ultra - high Mechanical Strength: Capable of withstanding the impact of high - pressure micro -
channels, with a bending strength ranging from 500 to 700 MPa.
2. High - temperature Resistance: Can operate stably at 1500 °C, making it suitable for high -
temperature scenarios such as thermopile sensors and combustion
chamber monitoring.
3. Optical Transparency: It has a wide spectral transmission range from 0.2 to 5.0 μm,
which is appropriate for laser transmission in the ultraviolet and
infrared spectra.
4. Chemical Inertness: Resistant to strong acids, strong bases, and organic solvents,
suitable for use in harsh environments such as microfluidic chips
and semiconductor manufacturing.
5. Low Adsorption: The surface is modified to be hydrophobic, reducing residues and
making it applicable for biomedical fluid transportation.
Technical Parameters
| Parameter | Specification |
| Material | Single-crystal Al₂O₃ (Sapphire) |
| Length | Custom 1–1500 mm |
| Wall Thickness | 0.5–5 mm (customizable) |
| Surface Finish | Optical polishing (Ra ≤0.1 μm) |
| Hardness | 9 Mohs |
| Max Temperature | 1950°C |
| Pressure Rating | ≥100 MPa |
| Key Features | - Wear-resistant
- Chemical inertness
- High dielectric strength |
Primary Applications
(1) Microfluidics and Biomedical
· Cell Culture Chips: Construct a stable micro - environment to monitor cell
metabolism in real time.
· Micro - and Nano - fluidic Transportation: Compatible with high - pressure microfluidic systems, used for
nanoparticle sorting or single - cell manipulation.
· Medical Implants: Ultra - thin - walled tubes (<100 μm) are used to fabricate
vascular stents that can withstand the in - vivo environment.
(2) Laser Optics
· Ultraviolet Laser Guiding: Achieve efficient transmission in 355 nm/266 nm lasers for
precision material processing.
· Infrared Fiber Coupling: Transmit CO₂ lasers (10.6 μm) with low loss (<0.2 dB/m).
(3) Sensors
· High - Temperature Pressure Sensors: Micro - tubes are integrated with piezoelectric thin films to
detect pressure pulsations in engine combustion chambers with a
frequency response of 10 kHz.
· Micro - Thermopiles: Encapsulated within sapphire tubes to detect the concentration
of CO₂ in exhaled breath with an accuracy of ±2 ppm.
(4) Scientific Research and Military
· Extreme Ultraviolet (EUV) Optics: A 3 - mm tube is used as a window for lithography light sources
to protect against 13.5 - nm wavelength radiation.
· Deep - Space Probes: Protect the optical instruments on the exterior of spacecraft,
withstanding extreme temperature differences.
