- Engineering & Materials
- Mechanical engineering
- Ultralow-density materials: from aerogels to microlattices
Ultralow-density materials: from aerogels to microlattices
Jacobsen, A. J. Sensors and Materials Laboratory, HRL Laboratories, LLC, Malibu, California.
Schaedler, T. A. Sensors and Materials Laboratory, HRL Laboratories, LLC, Malibu, California.
Carter, W. B. Sensors and Materials Laboratory, HRL Laboratories, LLC, Malibu, California.
- Influence of cellular architecture on properties
- Processing methods and their effect on cellular architecture
- Ultimate density limit for microlattice materials
- Links to Primary Literature
- Additional Readings
Over the past several decades, the need to increase the fuel efficiency of automotive and aerospace vehicles has driven the development of new lightweight materials. Among other innovations, this need has led to the emergence of a variety of new low-density porous materials. Whereas solid materials are limited to densities greater than approximately 1 g/cm3, materials that include significant porosity, termed porous or cellular materials, can exhibit one-tenth that density, or even lower. Examples include manufactured cellular materials (for example, polymer foams and honeycombs) and naturally occurring cellular materials (for example, wood). Cellular materials are commonly used in applications that take advantage of their low density and unique properties. In addition to vehicle applications, cellular materials are commonly used for packaging materials, padding and other sporting goods, building materials, and acoustic baffling. Most cellular materials fall in the density range of 0.01–0.3 g/cm3, and these materials are generally considered to be technologically mature. Materials with densities below 0.01 g/cm3 (10 mg/cm3), termed ultralow-density materials, are rare primarily because of the difficulties associated with forming and maintaining a stable material. Ultralow-density materials hold considerable promise to further improve the acoustic, thermal, and fuel efficiency characteristics of future vehicle systems, and as such are the focus of current research.
The content above is only an excerpt.
for your institution. Subscribe
To learn more about subscribing to AccessScience, or to request a no-risk trial of this award-winning scientific reference for your institution, fill in your information and a member of our Sales Team will contact you as soon as possible.
to your librarian. Recommend
Let your librarian know about the award-winning gateway to the most trustworthy and accurate scientific information.
AccessScience provides the most accurate and trustworthy scientific information available.
Recognized as an award-winning gateway to scientific knowledge, AccessScience is an amazing online resource that contains high-quality reference material written specifically for students. Contributors include more than 9000 highly qualified scientists and 43 Nobel Prize winners.
MORE THAN 8500 articles and Research Reviews covering all major scientific disciplines and encompassing the McGraw-Hill Encyclopedia of Science & Technology and McGraw-Hill Yearbook of Science & Technology
115,000-PLUS definitions from the McGraw-Hill Dictionary of Scientific and Technical Terms
3000 biographies of notable scientific figures
MORE THAN 19,000 downloadable images and animations illustrating key topics
ENGAGING VIDEOS highlighting the life and work of award-winning scientists
SUGGESTIONS FOR FURTHER STUDY and additional readings to guide students to deeper understanding and research
LINKS TO CITABLE LITERATURE help students expand their knowledge using primary sources of information