|
| ブランド名: | ZMSH |
| MOQ: | 1 |
| 価格: | by case |
| パッケージの詳細: | カスタムカートン |
| 支払条件: | T/T |
Soda-lime substrates are cost-effective glass wafers made from high-quality soda-lime silicate glass, a material widely used in the optics, electronics, and display industries. Composed primarily of silica (SiO₂), sodium oxide (Na₂O), and calcium oxide (CaO), soda-lime glass offers a well-balanced combination of optical transparency, mechanical strength, and ease of processing.
Due to its affordability and stable physical properties, soda-lime substrates are commonly used for general-purpose optical components, photolithography experiments, coating carriers, and low-temperature semiconductor applications.
Soda-lime glass wafers feature practical material properties that make them a popular choice for laboratory and industrial use:
Excellent Optical Clarity: High transparency (over 90%) in the visible light spectrum (400–800 nm).
Good Surface Quality: Can be polished to sub-micrometer flatness for precision optical or thin-film applications.
Mechanical Durability: Moderate hardness and sufficient strength for handling, coating, and bonding.
Cost-Effective: A budget-friendly substrate alternative compared with fused silica or borosilicate wafers.
Easy Machining & Coating: Suitable for cutting, drilling, and thin-film deposition such as ITO, SiO₂, or metal layers.
Smooth Surface & Chemical Compatibility: Compatible with most photoresists, solvents, and coating materials.
Although soda-lime glass has a slightly higher coefficient of thermal expansion (CTE) and lower chemical resistance than borosilicate glass, it remains ideal for low to moderate temperature processes and general optical testing environments.
Soda-lime substrates are produced using float-glass technology followed by precision cutting, lapping, and polishing to achieve semiconductor-grade flatness and clarity.
The typical process includes:
Float Glass Formation: Molten glass is floated on a layer of molten tin to produce ultra-flat, uniform sheets.
Wafer Cutting: The glass is laser- or diamond-sawn into circular or rectangular substrates.
Lapping & Polishing: Both sides are polished to achieve optical-grade smoothness and parallelism.
Cleaning & Inspection: Ultrasonic cleaning removes contaminants, ensuring ready-to-use surfaces.
Optional steps include thermal tempering, surface coating, or custom thickness control based on end-user requirements.
Thanks to their clarity, affordability, and machinability, soda-lime substrates are used in a wide range of optical, electronic, and experimental setups:
Optical Windows & Filters: Used in lenses, test plates, and optical housings.
Display & Photonics: Base material for thin-film coatings in display panels and light guides.
Semiconductor Processes: Serve as temporary carrier wafers or testing substrates.
Coating & Thin-Film Deposition: Ideal for ITO, SiO₂, and metal film coating for research or prototyping.
Microscopy & Imaging: Utilized as cover plates, calibration substrates, and micro-scale supports.
Educational & Laboratory Use: Widely used for optical demonstrations, etching experiments, and photolithography practice.
| Parameter | Specification |
|---|---|
| Material | Soda-Lime Silicate Glass |
| Diameter | 2", 3", 4", 6", 8" (custom sizes available) |
| Thickness | 0.3–1.1 mm (custom upon request) |
| Surface Finish | Double-side polished / Single-side polished |
| Flatness | ≤15 µm |
| Surface Roughness (Ra) | <2 nm |
| Optical Transmission | >90% (400–800 nm range) |
| Coefficient of Thermal Expansion (CTE) | ~9 × 10⁻⁶ /K |
| Density | 2.5 g/cm³ |
| Hardness | 5.5–6.0 Mohs |
Q1: What are the main differences between soda-lime substrates and borosilicate glass wafers?
A: Soda-lime substrates are more economical and suitable for room-temperature or low-thermal applications, while borosilicate wafers provide higher chemical and thermal stability.
Q2: Can soda-lime substrates be used for coating and photolithography?
A: Yes. The polished surface supports photoresist coating, thin-film deposition, and etching processes commonly used in optical and semiconductor labs.
Q3: What temperature range can soda-lime glass withstand?
A: Generally up to 250–300°C without deformation. For higher temperature use, borosilicate or fused silica is recommended.
Q4: Are custom sizes and thicknesses available?
A: Yes, round or square substrates with customized dimensions and thickness tolerances can be supplied upon request.
Q5: Is soda-lime glass suitable for optical measurement applications?
A: Absolutely. With high visible transparency and stable refractive index (~1.52), it’s ideal for optical alignment, calibration, and surface testing.
