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Synthetic Sapphire is a single crystal form of corundum, Al2O3, also known as alpha-alumina,
alumina, and single crystal Al2O3. Sapphire is aluminium oxide in the purest form with no porosity or grain boundaries, making it theoretically dense. The combination
of favourable chemical, electrical,mechanical, optical, surface,
thermal, and durability properties make sapphire a preferred
material for high performance system and component designs. For various
semiconductor applications, sapphire is the best choice in comparison with other synthetic
Sapphire possesses a unique combination of excellent optical,
physical and chemical properties. The hardest of the oxide
crystals, sapphire retains its high strength at high temperatures,
has good thermal properties and excellent transparency. It is
chemically resistant to common acids and alkali at temperatures up
to 1000 °C as well as to HF below 300 °C . These properties
encourage its wide use in hostile environments where optical
transmission in the range from the vacuum ultraviolet to the near
infrared is required. Sapphire is anisotropic hexagonal crystal.
Its properties depend on crystallographic direction (relative to
the optical C-axis).
1.2: Materials characteristic
|B270||CaF2||Ge||MgF2||N-BK7||Sapphire||Si||UV Fused Silica||ZnSe||ZnS|
|Refractive index (nd)||1.523||1.434||4.003||1.413||1.517||1.768||3.422||1.458||2.403||2.631|
|Coefficient of dispersion (Vd)||58.5||95.1||N/A||106.2||64.2||72.2||N/A||67.7||N/A||N/A|
Sapphire substrates / wafers: EPI-polished, optically polished, lapped or as-cut sapphire disks,
windows, substrates, blanks as well as epitaxial structures
· Blue LED's (BLED's) -,· for IR Detectors,
· Sapphire is used for its durability and erosion/corrosion
resistance, often in combination with
the ability to withstand high heat while having a very broad
transmission range. Applications include:
· Windows -. · Countermeasures lamps -
· Sapphire is used in analytical applications where combinations of
high temperature, pressure, and hydrofluoric acid species are
encountered. These applications need the survivability of sapphire,
while often needing other properties such as favourable UV
(ultraviolet) or IR (infrared) transmission.
· NMR (Nuclear Magnetic Resonance) tubes;· Sample preparation -·
Analytical chemistry -
· Sapphire is used in surgical systems for laser transmission and
in contact with bodily fluids.
· Surgical tips - Endoscope lenses - Sapphire knives -
· Sapphire is used for short and long wavelength applications (UV
and IR) beyond the range where conventional optics performs
adequately. High temperatures and hostile environments also
necessitate the use of sapphire optics.
· Illumination windows - Sapphire lightguides - Optical components:
Watch industry: Sapphire is widely used for watch glasses.
3.0 sample in details
What can we do?
ZMKJ company locates in the city of Shanghai, Which is the best
city of China, and our sapphire
factory is founded in Wuxi city in 2014.
We specialize in processing a varity of materials into wafers,
substrates and custiomized optical
glass parts as like sapphire,ruby,sic, GaN, GaAs, LT,
Quartz.components widely used in electronics,
optics, optoelectronics and many other fields.
We also have been working closely with many domestic and oversea
institutions and companies, provide customized products and
services for their R&D projects.
It's our vision to maintaining a good relationship of cooperation
with our all customers by our good reputatiaons.
6.0 FAQ –
Q: What's the MOQ?
(1) For inventory, the MOQ is 10pcs.
(2) For customized products, the MOQ is 10pcs-30pcs.
Q: What you can supply logistics and cost?
(1) We accept DHL, Fedex, TNT, UPS, EMS, SF and etc by FOB
Q: What's the delivery time?
(1) For the standard products such as ball lens, powell lens and
For inventory: the delivery is 5 workdays after order.
For customized products: the delivery is 2 or 3 workweeks after
Q: Do you have inspection report for material?
We can supply 100％ details report for our products.