ALLVAR University
Learn More About Negative CTE and ALLVAR Alloys
Add negative CTE to your design toolbelt! At ALLVAR, we aim to provide resources to help innovators design and use negative thermal expansion in their projects and applications. ALLVAR University was established as a resource to help teach the fundamentals of designing with negative thermal expansion.
ALLVAR News and Blog – Dig deeper into the regularly updated blogs to learn more about specific ALLVAR Alloys use cases and news.
Video Library – ALLVAR offers a wide range of educational videos on the principals of thermal expansion. Learn how these properties fit into the design of optical and mechanical systems. Want to see negative thermal expansion in use? Check out the demo videos to see ALLVAR Alloys in action.
Papers and Presentations – Here you can find links to publications related to ALLVAR Alloys and externally published presentations.
SOLIDWORKS Material Definition – Want to model ALLVAR Alloy 30 within SOLIDWORKS? We can help. Request the material definition here.
Negative CTE Blog Posts
Learn more about the work being done towards negative CTE alloys and their applications in the ALLVAR blog series.
![Titled" Tips for Designing with ALLVAR Alloys: Simplified Thermal Design. A section of a lens presumed to be an athermal lens is shown next to the title with the ALLVAR Logo underneath.](https://allvaralloys.com/wp-content/uploads/2024/02/TIPS-FOR-DESIGNING-WITH-ALLVAR-ALLOYS-300x159.webp)
Tips for Designing with ALLVAR Alloys: Simplified Thermal Design
Want to learn more about how ALLVAR alloys can help with your thermal design? Find these tips, tricks, and rules of thumb to start designing
![2023 Year In Rewview Image. The Title reads 2023 year in review with images from the allvar team at SPIE Defense and Commercial Sensing, Mirror Technology days, and an image of work being done on the Nancy Grace Roman Space Telescope](https://allvaralloys.com/wp-content/uploads/2023/12/2023-ALLVAR-Year-In-Review-Header-Image-300x157.webp)
Looking back and launching forward: 2023 YEAR-IN-REVIEW
A Message from James A. Monroe, Founder & CEO To Everyone Rooting For ALLVAR, The ALLVAR team has been working hard in 2023 and is ready
![Introducing the Cosmos: ALLVAR's Role in the Nancy Grace Roman Space Telescope" white title text infront of a visual of the Nancy Grace Roman Space Telescope with a small white ALLVAR logo in the bottom right.](https://allvaralloys.com/wp-content/uploads/2023/11/ALV_NGRBlogImages-01-Large-300x157.webp)
Unlocking the Cosmos: ALLVAR’s Role in the Nancy Grace Roman Space Telescope
ALLVAR is headed to space in a big way! Find out how ALLVAR Alloys are being used aboard the Nancy Grace Roman Space Telescope to
![](https://allvaralloys.com/wp-content/uploads/2023/11/Washers-Round-bar-and-tube-and-custom-components-new-products-300x300.png)
Thermal compensation washers now available with COTS item numbers!
New commercially-off-the-shelf ALLVAR thermal compensation washer have arrived! Learn more here.
![The message on the left says Thermal Compensating Washers: a basic guide, while the right side shows five thermal compensating washers that can be used to tackle CTE Mismatch.](https://allvaralloys.com/wp-content/uploads/2023/08/ThermalCompWashers_AGuideweb-300x157.jpg)
Thermal Compensating Washers for CTE Mismatch
Learn how to use negative thermal expansion ALLVAR washers or spacers to maintain a constant preload and tackle CTE mismatch.
![A title image for the evolution of athermal design blog post. The image shows John Harrison, an 18th century English clockmaker who studied the thermal expansion of materials to create the athermal "Gridiron Pendulum."](https://allvaralloys.com/wp-content/uploads/2023/06/EvolutionAthermalDesign-300x157.jpg)
The Evolution of Athermal Design
Athermal design owes its foundations to an 18th century clockmaker’s designs. ALLVAR Alloys will help you revolutionize your design.
![Design with Athermal Materials in SOLIDWORKS](https://allvaralloys.com/wp-content/uploads/2023/03/Athermal-Material-in-SOLIDWORKS-300x154.jpg)
Design with Athermal Materials in Solidworks
Athermal Material design is easy with the SOLIDWORKS ALLVAR Alloy 30 material definition. Request the file here and design with negative thermal expansion today!
![](https://allvaralloys.com/wp-content/uploads/2022/12/2022-collage-300x200.jpeg)
Closing out 2022 Strong:
ALLVAR Year-in-review
ALLVAR founder, James Monroe Ph.D. , looks back at 2022 and the developments made for negative thermal expansion alloys and their applications.
![Cryogenic Solutions for Thermal Expansion is written on a stylized background with a cryogenic dewer in the background.](https://allvaralloys.com/wp-content/uploads/2022/11/Cryogenic-Solutions-for-Thermal-Expansion-ALLVAR-300x155.jpg)
Cryogenic Solutions for Thermal Expansion
A short article about ALLVAR Alloy 30 washer compensated joints in cryogenic environments
Video Library
Learn More About Negative CTE and ALLVAR Alloys
Add negative CTE to your design toolbelt! ALLVAR offers a wide range of educational videos on the principals of thermal expansion. Learn how these properties fit into the design of optical and mechanical systems. Want to see negative thermal expansion in use? Check out the demo videos to see ALLVAR Alloys in action.
- All
- Allvar University - Learn About CTE
- Demos
- Meet the Team
- NTE Spacers
- Ultra-Stable Struts
- Washers
- Webinar
![](https://allvaralloys.com/wp-content/uploads/2021/04/deriving-300x169.jpg)
Deriving a Passive Athermalization Figure of Merit for Length Comparison
![](https://allvaralloys.com/wp-content/uploads/2021/04/length-300x169.jpg)
Reducing the length of athermal optics with ALLVAR Alloys
![Constant Force Load Washer](https://allvaralloys.com/wp-content/uploads/2021/04/watch-what-300x169.jpg)
Watch What A Negative Thermal Expansion Washer Can Do!
![Negative Coefficient of Thermal Expansoin](https://allvaralloys.com/wp-content/uploads/2021/04/visual-300x169.jpg)
Visual Comparison of Thermal Focal Shift in Common IR Optic Materials versus ALLVAR
![](https://allvaralloys.com/wp-content/uploads/2021/04/Application-300x169.jpg)
Application: Negative Thermal Expansion Components for Thermal Focus Stability in optics
![](https://allvaralloys.com/wp-content/uploads/2021/04/dr_james-300x169.jpg)
Dr. James A. Monroe Talks about SPIE AR/VR/MR
![](https://allvaralloys.com/wp-content/uploads/2021/04/jeremy-300x169.jpg)
Jeremy McAllister talks at SPIE AR/VR/MR
![](https://allvaralloys.com/wp-content/uploads/2021/04/meet_the-300x169.jpg)
Meet the ALLVAR Team
![](https://allvaralloys.com/wp-content/uploads/2021/04/passive-300x150.gif)
Passive Athermalization Solutions for Optical System Alignment
![](https://allvaralloys.com/wp-content/uploads/2021/04/creatingp1-300x169.jpg)
Creating a Tailored Thermal Expansion Part 1 – Using ALLVAR Negative Thermal Expansion Alloys to create a target CTE.
![Tailored Thermal Expansion for athermalization](https://allvaralloys.com/wp-content/uploads/2021/04/creating_p2-1-300x169.jpg)
Creating a Tuned Thermal Expansion Part 2 – Tailored Expansion with Multi-Components
![](https://allvaralloys.com/wp-content/uploads/2021/04/cte2-300x169.jpg)
CTE Part 2 – How to Choose Between Average or Instantaneous Calculations
![](https://allvaralloys.com/wp-content/uploads/2021/04/cte_1-300x169.jpg)
CTE Part 1 – Average and Instantaneous Calculations
![](https://allvaralloys.com/wp-content/uploads/2021/04/creating_p3-300x169.jpg)
Creating a Zero Thermal Expansion Part 3 -Tailoring Thermal Expansion to Achieve Zero Expansion with ALLVAR Alloys
![Thermal Defocus](https://allvaralloys.com/wp-content/uploads/2021/04/optic-300x169.jpg)
Optics Part 1 -The Coefficient of Thermal Defocus
![Thermal Defocus](https://allvaralloys.com/wp-content/uploads/2021/04/optic_2-300x169.jpg)
Optics Part 2 – The Coefficient of Thermal Defocus on Real Materials
![Average and Instantaneous Negative CTE](https://allvaralloys.com/wp-content/uploads/2021/04/cte3-300x169.jpg)
CTE Part 3 – Average and Instantaneous CTE in Some Real Materials
Contact Us Today to Revolutionize Your Thermal Performance
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