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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.

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.

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.

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

Athermal Material design is easy with the SOLIDWORKS ALLVAR Alloy 30 material definition. Request the file here and design with negative thermal expansion today!

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

A short article about ALLVAR Alloy 30 washer compensated joints in cryogenic environments

Matching ZERODUR's CTE Blog Post Header Image

Matching ZERODUR’s CTE – ALLVAR Alloy 30 enabled near zero CTE struts

ZERODUR is known for it’s zero CTE. Learn how ALLVAR Alloy 30 can help match supporting structure’s CTE to ZERODUR.

Introductory Guide to Tailored Thermal Expansion

Want to match a certain CTE? The tailored thermal expansion guide has you covered. Learn how negative thermal expansion can help here.

Telescope Hexapod Assembly with ALLVAR Alloy ultra-stable struts shown. A zoomed in image is shown on the negative CTE portion of the strut. The Words Creating the future of ultra-stable struts is shown above the image.

Creating the Future of Ultra-Stable Telescopes

Negative thermal expansion ALLVAR Alloy 30 offers a solution for the future of ultra-stable telescope requirements. Read about our current work to enable ultra-stable telescopes

CTE Mismatch and Bolted Joints - A fastened cryogenic apparatus is shown with an ALLVAR Alloy 30 Negative Thermal Expansion washer.

CTE Mismatch in Bolted Joints – Negative Thermal Expansion Washers offer a solution!

CTE Mismatch in Bolted Joints challenging your design? Check out how a simple NTE Washer can help maintain constant bolt preloads complete with a FEA

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.