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Smooth Fused Quartz Substrate Conical Cavity For Optical Sample Analysis

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Smooth Fused Quartz Substrate Conical Cavity For Optical Sample Analysis

Material : High Purity Fused Silica (SiO2 > 99.99%)

Base Dimensions : 2mm x 2mm

Cavity Type : Center Conical Tapered Pit

Max Operating Temperature : 1100°C

Chemical Resistance : HF, Strong Acid & Alkali, Organic Solvents

Thermal Expansion : CTE 5.5 x 10^-7 /°C (Low)

Surface Finish : Precision Machined, Smooth & Chip-Free

Purity : No Metal Ion Precipitation

Application : Optical Micro Sample Holder, Semiconductor Positioning Base, Micro Reagent Cell

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Product Overview

The Quartz Substrate with Conical Cavity (base 2mm x 2mm with center tapered pit) is a high-precision optical-grade quartz component designed for micro-sample positioning, optical testing, and semiconductor experimentation. Precision machined from high-purity fused silica (SiO2 > 99.99%) with a smooth, chip-free cone recess, it delivers exceptional thermal stability up to 1100°C, outstanding chemical resistance to HF and aggressive reagents, and zero ion leaching — making it the ideal platform for the most demanding micro-scale optical and semiconductor applications.

Key Features

Precision Conical Cavity: Center tapered pit with smooth, chip-free finish for secure micro-sample placement and positioning
1100°C High Temperature Resistance: Maintains dimensional stability and surface quality under extreme thermal conditions without deformation
HF & Strong Chemical Resistance: Unaffected by hydrofluoric acid, concentrated acids, strong alkalis, and organic solvents
Low Thermal Expansion: CTE 5.5 x 10^-7/°C ensures stable dimensions and cavity geometry across wide temperature ranges
High Purity & Zero Ion Leaching: SiO2 > 99.99% with no metal ion precipitation, preventing sample contamination
Precision Machining: Fine-polished surface with exact dimensional tolerances for repeatable optical alignment

Applications

Industry	Application
Optical Sample Testing	Fixed-point holder for micro particles and powder samples with transparent base enabling light transmission detection and spectroscopic analysis
Semiconductor Experimentation	Positioning and alignment base for micro components with precision cavity restricting movement during testing
Micro Chemical Testing	Nano-liter reagent cell with conical recess for micro-volume chemical reactions and analysis under microscope

Competitive Advantages

vs. Plastic/Polymer Substrate: Plastics swell and degrade in organic solvents and cannot withstand high temperatures; this quartz substrate resists all solvents and acids, withstands 1100°C, and can be repeatedly cleaned and reused without degradation

vs. Borosilicate Glass Substrate: Borosilicate glass softens above 500°C and is attacked by HF; quartz substrate maintains integrity at 1100°C and is fully resistant to hydrofluoric acid and all corrosive media

Specifications

Parameter	Value
Material	High Purity Fused Silica (SiO2 > 99.99%)
Base Dimensions	2mm x 2mm
Cavity Type	Center Conical Tapered Pit
Max Operating Temperature	1100°C
Chemical Resistance	HF, Strong Acid & Alkali, Organic Solvents
Thermal Expansion	CTE 5.5 x 10^-7 /°C (Low)
Surface Finish	Precision Machined, Smooth & Chip-Free
Purity	No Metal Ion Precipitation

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