Featured Quartz Solutions for Analytical Laboratories
Engineered in Donghai, China with sub-micron laser micro-grooving and ultra-smooth optical finishing, directly supplied to South Moravian institutes and European industry.
Zero-Background XRD Sample Holders: Mitigating Diffuse Halo Effects
In powder X-ray diffraction (PXRD) and grazing incidence XRD (GIXRD), substrate selection determines the signal-to-noise ratio in low-angle scattering and trace-phase identification.
The Physics of Off-Axis Single Crystal Quartz
Conventional amorphous silica glass holders present an unavoidable broad scattering humps between 2θ = 15° and 30°. For crystallographers working on organic macromolecules, battery cathode solid-electrolyte interphases, or metal-organic frameworks (MOFs), this diffuse background obscures primary diagnostic Bragg peaks.
Our zero-background quartz plates are synthesized and oriented along non-diffracting crystallographic planes (specifically chosen cut orientations where crystal structure factors yield net-zero destructive interference within standard scanning quadrants). By utilizing synthetically grown single-crystal alpha-quartz wafers cut precisely off-axis (typically cut along crystallographic planes such as [510] or specifically rotated orientations), our holders eliminate Bragg reflections completely across the entire 2θ range from 5° to 90° using Cu K-alpha radiation.
Sub-Micron Cavity Depth & Planar Tolerance
Sample displacement error is the largest contributor to systematic peak shifting in Bragg-Brentano diffractometers (Δ2θ = -2s × cosθ / R). If a powder sample sits even 15 microns above or below the goniometer focusing circle, whole-pattern profile fitting (Rietveld refinement) fails to converge accurately.
Zunex Quartz utilizes CNC precision laser grooving, wet chemical etching, and optical flat grinding to fabricate sample micro-cavities from 0.05 mm to 2.0 mm depth, with flat-bottom parallelism tolerances within ±0.002 mm. This ensures that microgram quantities of synthesized powders remain rigorously coplanar with the instrument reference plane.
Optical, Thermal & Dimensional Specifications
Every batch of fused quartz and synthetic silica undergoes strict spectroscopic and laser interferometry verification prior to export.
| Material Class | Purity Grade (SiO₂) | Spectral Cutoff Range | Max Continuous Temp | OH Content (Hydroxyl) | Primary Diffractometer Application |
|---|---|---|---|---|---|
| JGS1 (Synthetic Fused Silica) | ≥ 99.999% | 185 nm – 2500 nm (Deep UV) | 1100 °C | < 1 ppm (Ultra-dry) | Capillary Transmission XRD, Synchrotron, Micro-diffraction |
| JGS2 (Optical Fused Quartz) | ≥ 99.99% | 220 nm – 2500 nm (UV-Vis) | 1150 °C | < 30 ppm | Standard Reflection XRD Cavity Holders, Ambient Stages |
| JGS3 (Infrared Fused Quartz) | ≥ 99.98% | 260 nm – 3500 nm (Near-to-Far IR) | 1200 °C (Short 1300 °C) | < 5 ppm (Water-free) | In-situ High-Temperature XRD Stages, Reactive Gas Chambers |
| Single-Crystal Zero Background | Synthetic Single Crystal | Off-axis Non-diffracting | 573 °C (α-to-β phase) | Negligible | Trace Organic Polymorphs, Pharmaceutical Salt Screening |
Brno's Analytical Ecosystem: Precision XRD Applications
Known as the analytical instrumentation heart of Central Europe, Brno hosts world-class electron microscopy clusters, advanced nanotechnology institutes, and polymer research laboratories requiring exacting quartz standards.
CEITEC & Nanomaterials Research
Researchers at Central European Institute of Technology (CEITEC) synthesize ultra-thin 2D transition metal dichalcogenides (TMDs) and quantum dots. Our JGS1 wafers and polished zero-background quartz slides provide the atomic flatness (Ra < 0.5 nm) needed for accurate grazing-incidence small-angle X-ray scattering (GISAXS) and thin-film reflectometry without substrate signal interference.
Semiconductor Packaging & Brno R&D
Brno's booming semiconductor test houses and wafer inspection facilities utilize our micro-grooved quartz carriers and high-pressure CVD rings. When inspecting solder intermetallics, packaging substrates, and epitaxial film stress using high-resolution XRD (HRXRD), non-contaminating, high-purity quartz ensures zero heavy-metal cross-contamination during thermal cycling.
Masaryk University Polymer & Bio-Lab XRD
In crystallographic studies of proteins, active pharmaceutical ingredients (APIs), and synthetic elastomers, researchers frequently deal with micro-gram yields. Our custom shallow-well zero-background sample holders (cavities as shallow as 0.05 mm and diameters of 2 mm to 10 mm) enable clean data collection from minimal sample quantities without specimen dilution.
Brno & Central European Analytical Trends (2025–2030)
Navigating the transition toward automated high-throughput screening, in-situ operando experiments, and sustainable supply-chain resilience.
1. Proliferation of In-situ & Operando XRD
Static ambient diffraction is rapidly being supplemented by environmental stages. Brno material scientists frequently perform battery charging-discharging XRD or catalytic reforming reactions in controlled atmospheres. This demands ultra-pure quartz reaction capillaries and environmental domed sample holders capable of sustaining thermal gradients up to 1100 °C without gas outgassing or devitrification.
2. Automation in High-Throughput Crystallography
With the expansion of robotics and multi-well automated autosamplers in South Moravian research centers, dimensional conformity has become non-negotiable. Standard injection-molded or crudely cut glass leads to robotic arm jams. Our CNC-machined fused quartz holders adhere to ISO 2768-m tolerances, guaranteeing seamless alignment in automatic 96-position goniometer wheels.
Direct Factory Advantage: Donghai Crystal Capital to Brno
Headquartered in Donghai County, Jiangsu — the world's epicenter for quartz mineral processing and fused silica refinement — Zunex Quartz eliminates OEM intermediaries.
≤ 2h Fast Engineering Review
Direct interaction with senior quartz glass technicians. We evaluate your STEP, DWG, or PDF drawings within two hours, advising on thermal expansion matches and laser machining routes.
Sub-Micron Laser Finishing
Laser drilling, grooving, and cutting eliminate the micro-fissures typical of mechanical diamond tooling, preventing thermal stress fractures during high-temperature analytical cycles.
99.99% Guaranteed Raw Mineral
Sourced directly from verified Donghai high-purity natural silica veins and synthetic vapor axial deposition processes, guaranteeing absolute minimal alkali metal trace contaminants.
Safe DDP Transport to Czechia
Customized shock-proof multi-layer vacuum blister cases and specialized export wooden packaging ensure zero breakage during international express transit to Brno laboratories.
Frequently Asked Questions by Brno Laboratory Scientists & Buyers
Clear, practical answers covering technical parameters, custom drawings, European compliance, and logistics to South Moravia.
What distinguishes an XRD zero-background quartz plate from standard microscope quartz slides?
Can Zunex produce custom sample wells according to our specific powder volume requirements?
Which instrument models in Brno are compatible with your quartz sample holders?
What are the import procedures, customs duties, and TARIC codes for shipments to the Czech Republic?
How should our laboratory clean and decontaminate quartz zero-background holders between tests?
What is the average lead time for custom quartz fabrication delivered to South Moravia?
Need Custom XRD Quartz Holders for Your Brno Laboratory?
Send us your technical drawings or dimensional requirements. Our senior quartz processing engineers will review tolerances, evaluate material purity grades, and provide an official quotation within 2 hours.