💎 JGS1 UV Grade Special
4 Inch (100mm) Fused Silica
Thickness: 500µm
Polish: Double Side Polished (DSP)
Transmission: >90% @ 200nm
Ideal for UV lithography and microscopy.
Fused Silica Quote
Tell us your Diameter, Thickness, and Grade (JGS1/2/3).
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Why UniversityWafer?
- Laser Marking: We can serialize your wafers for traceability.
- Custom Shapes: We dice 150mm wafers into 10x10mm or 20x20mm chips.
- Coatings: Au, Pt, Ti, or ITO coatings available upon request.
In-Stock Fused Silica Inventory (more available upon request).
Below is a selection of our most popular Quartz and Fused Silica configurations.
| Diameter | Thickness | Polish | Grade | Application | Link |
|---|---|---|---|---|---|
| 2" (50.8mm) | 500µm | DSP | JGS1 | UV Optics | Buy |
| 3" (76.2mm) | 500µm | DSP | JGS2 | Microfluidics | Buy |
| 4" (100mm) | 170µm (Coverglass) | DSP | JGS1 | Microscopy | Buy |
| 4" (100mm) | 1,000µm (1mm) | DSP | JGS2 | Substrates | Buy |
| 6" (150mm) | 675µm | DSP | JGS1 | Wafer Bonding | Buy |
Which Grade Do You Need? (JGS1 vs JGS2 vs JGS3)
Fused silica purity determines its transmission range. Choosing the right grade is critical for your optical performance.
1. JGS1 (UV Grade)
Range: 185nm – 2500nm.
High-purity synthetic silica. It contains OH- groups which improve UV transmission but cause absorption bands in the Infrared (IR) range.
- Best for: UV Lithography, UV Microscopy, Spectroscopy.
2. JGS2 (Standard Optical Grade)
Range: 220nm – 2500nm.
The industry workhorse. Good for visible and near-IR applications. It has tiny bubbles (micro-inclusions) which may scatter deep UV light, making JGS1 a better choice for <200nm applications.
- Best for: Microfluidics, Windows, Substrates, Carrier Wafers.
3. JGS3 (Infrared Grade)
Range: 260nm – 3500nm.
Produced in a vacuum to remove OH- ions. This eliminates the water absorption bands, allowing excellent transmission deep into the Infrared (up to 3.5µm).
- Best for: IR Sensors, Thermal Imaging, FTIR Spectroscopy.
Common Applications
Microfluidics & Lab-on-Chip
Fused silica is the material of choice for microfluidics due to its low auto-fluorescence and chemical inertness. We offer wafers with excellent surface roughness (Ra < 1nm) suitable for anodic bonding to silicon.
High-Temperature Substrates
With a high melting point and extremely low coefficient of thermal expansion (0.55 x 10⁻⁶/°C), fused silica is perfect for MEMS heaters and furnace windows where standard glass would crack under thermal shock.
Optical Mirrors
We can coat fused silica with Gold (Au), Aluminum (Al), or Dielectric stacks to create precision mirrors. The material's stiffness (Young's Modulus ~72 GPa) ensures the mirror surface remains flat.
D263 vs. Fused Silica?
Customers often ask about D263 Glass. D263 is a borosilicate glass that is cheaper but has lower UV transmission and lower thermal resistance than Fused Silica. If you need deep UV transparency (<300nm) or high-temp stability, stick with Fused Silica.