Thin Sapphire for Oil Immersion Microscopy
We have the thin Sapphire you need for oil immersion microscopy.
A scientist contacted us for a quote on the following:
"I notice there is 2' (50.8mm) wafer available on your website and I can go with that. We are using this wafer for oil-immersion microscopy so the thickness under 150um is necessary."
UniversityWafer, Inc. Quoted:
50.8mm 100um DSP c-plane off to M plane 0.2 deg wafers.
Price depends on on quantity.
Need Thin Sapphire Wafers for Microscopy? Buy Online Today or request a custom sapphire wafer quote for your optical imaging application.
What is Oil Immersion Microscopy?
Oil Immersion Microscopy is an essential tool for studying bacteria 
and inanimate objects using compound microscopes. Although it has several disadvantages, the process is still an important part of the research process. Its use in the lab is indispensable for research. With proper technique, oil immersion can be a very effective imaging technique. In addition to the benefits of this imaging technique, it also has many drawbacks. Read on to learn more about this microscopy method.
The most common type of oil used in microscopy is the 100x immersion oil. The objective lens in a light microscope is made of glass, and the oil in this process reduces the refractive index of the light. This increases magnification and resolution. In addition, different types of oils have different properties. You can choose an immersion liquid for different purposes, or a general purpose immersion oil for live cell imaging.
Why Immersion Oil is Used in 100x?
The objective lens of a light microscope has a 100x oil immersion objective. The light passes through different materials with different refractive indices, so each passage decreases the quality of the image. By reducing the number of passages, you can achieve better magnification and resolution. There are two types of oil immersion fluids, one for each microscopy application. An ideal solution for any kind of immersion oil is a combination of two or more of these.
What is Oil Immersion in Microscopy?
Oil immersion microscopy is a great technique for preserving specimens and obtaining high-quality images. While a variety of oils are available, one of the most common is the improved oil, which is hygroscopic and crystal clear. An enhanced oil is also available. This type of oil allows for the most detailed image resolution. However, you must remember that this method is not for the faint-hearted.
There are two types of oil immersion microscopy. There are general purpose oils and fluorescent oils. For live cell imaging, the high-viscosity oil is used. NVH (non-hydroscopic) is the best choice for fluorescence microscopy. It produces pale green background colours and is ideal for inverted, horizontal and inclined specimen mounts. If you are new to this technique, consider taking some classes and reading some articles on oil immersion.
What is the point of using immersion oil on a slide under the microscope?
Oil Immersion Microscopy is a method for studying living cells and inorganic materials. It requires fixed specimens. The objective lens of a microscope is the oil medium. The microscope works in the same way as a normal microscope. The light from the specimen passes through the objective lens and then through the second optical lens to the viewer's eyes. There are two different kinds of immersion oils: the general purpose and the fluorescent ones.
There are two types of immersion oils: the high-viscosity oil and the low-viscosity oil. They have different properties and are used for different applications. The general-purpose immersion oil is used for inverted, horizontal, and inclined microscopes. Its viscosity is around 21,000 centistokes, which makes it perfect for fluorescence microscopy. For inverted and inclined microscopes, the type NVH oil is recommended.
The oil is used to increase the magnification of the specimen. The oil can also be used to clean the condenser lens. During the procedure, the lens is cleaned of oil. There are two types of oils: standard and high-viscosity. The standard immersion oil is used in amateur microscopy. It is the most common type, but there are other options for both. In both, the method is effective.
There are two types of oil: the high-viscosity and the low-viscosity oils. The high-viscosity oil is used for inverted and inclined microscopes. Its viscosity is about 21,000 centistokes. The Type NVH oil is used for fluorescent imaging at room temperature. The Type NVH oil is used in live cell microscopy.
The practical oil immersion objective contains a hemispherical front lens element, a positive meniscus lens, and a doublet lens group. In Figure 1, the refractions at the first two lens elements are aplanatic. The aplanatic front element is the first lens element. Its aplanatic lens is used to hold the specimen. The aplanatic refraction occurs at the aplanatic point of the hemispherical front surface. The refraction at the aplanatic point of the meniscus lens is not present.
Why Sapphire Wafers Are Used for Oil Immersion Microscopy
Sapphire wafers are widely used for oil immersion microscopy because of their excellent optical transparency, chemical resistance, scratch resistance, and mechanical durability. Thin sapphire substrates are commonly selected for high-resolution optical imaging, fluorescence microscopy, confocal microscopy, Raman spectroscopy, and advanced laboratory research applications.
Oil immersion microscopy improves image resolution and light collection by reducing light refraction between the microscope objective lens and the sample surface. Sapphire substrates are especially useful in microscopy environments requiring durable transparent materials capable of maintaining optical performance under demanding laboratory conditions.
Thin Sapphire Substrates for Optical Imaging
Researchers often use thin sapphire wafers for microscopy applications because sapphire combines optical clarity with exceptional hardness and thermal stability. Compared to traditional glass microscope slides, sapphire offers improved scratch resistance and long-term durability in high-performance optical systems.
Thin sapphire wafers under 150 µm are frequently requested for oil immersion microscopy, fluorescence imaging, semiconductor inspection, photonics research, and bioimaging applications requiring transparent polished substrates.
Sapphire substrates can also support microscopy applications involving:
- Fluorescence microscopy
- Confocal microscopy
- Raman spectroscopy
- Optical imaging systems
- Semiconductor inspection
- Photonics research
- Live cell imaging
Sapphire vs Glass for Oil Immersion Microscopy
Sapphire wafers provide several advantages over conventional glass slides in microscopy applications. Sapphire has a Mohs hardness of 9, making it significantly more scratch resistant than standard optical glass. Sapphire also offers excellent thermal stability and strong resistance to harsh laboratory chemicals.
Because sapphire maintains high optical transparency across a broad wavelength range, it is commonly used in advanced optical systems, UV imaging, infrared applications, and high-precision microscopy environments.
Researchers may also combine sapphire with quartz components, optical coatings, or photonic structures for specialized imaging and semiconductor applications.
Optical Properties of Sapphire for Microscopy
Sapphire is frequently selected for microscopy substrates because of its excellent optical and physical properties:
- High optical transparency
- Strong chemical resistance
- Excellent thermal stability
- Superior surface durability
- Low surface contamination
- High hardness and scratch resistance
- Compatibility with optical and semiconductor environments
Double-side polished (DSP) sapphire wafers are often preferred for optical microscopy because they provide smooth surfaces with excellent light transmission and reduced optical distortion.
Sapphire Wafers for Advanced Microscopy Applications
UniversityWafer supplies thin sapphire wafers for oil immersion microscopy, fluorescence imaging, optical research, semiconductor inspection, and photonics applications. Available specifications include multiple diameters, thicknesses, orientations, and polished surface finishes for advanced laboratory and imaging environments.