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2. Run, Sam, run

Author

White, Mike and Smith, Lawrence

Published
2023

10. Femtosecond laser fabricated nitinol living hinges for millimeter-sized robots

Author

Hedrick, Alexander, Kabutz, Heiko, Smith, Lawrence, MacCurdy, Robert, and Jayaram, Kaushik

Subjects
Computer Science - Robotics
Abstract

Nitinol is a smart material that can be used as an actuator, a sensor, or a structural element, and has the potential to significantly enhance the capabilities of microrobots. Femtosecond laser technology can be used to process nitinol while avoiding heat-affected zones (HAZ), thus retaining superelastic properties. In this work, we manufacture living hinges of arbitrary cross-sections from nitinol using a femtosecond laser micromachining process. We first determined the laser cutting parameters, 4.1 Jcm^-2 fluence with 5 passes for 5 um ablation, by varying laser power level and number of passes. Next, we modeled the hinges using an analytical model as well as creating an Abaqus finite element method, and showed the accuracy of the models by comparing them to the torque produced by eight different hinges, four with a rectangular cross-section and four with an arc cross-section. Finally, we manufactured three prototype miniature devices to illustrate the usefulness of these nitinol hinges: a sample spherical 5-bar mechanism, a sarrus linkage, and a piezoelectric actuated robotic wing mechanism., Comment: 7 pages, 4 figures, submitted to IEEE RA-L

Published
2023

12. Index

Author

Smith, Lawrence G.

Published
2008

13. Back Cover

Author

Smith, Lawrence G.

Published
2008

16. Part II

Author

Smith, Lawrence G.

Published
2008

18. Notes

Author

Smith, Lawrence G.

Published
2008

26. Three. Tina

Author

Smith, Lawrence G.

Published
2008

27. Dedication

Author

Smith, Lawrence G.

Published
2008

30. Cover

Author

Smith, Lawrence G.

Published
2008

32. Title Page

Author

Smith, Lawrence G.

Published
2008

33. Theatre and Film in Evolutionary Perspective

Author

Wade, Leslie A., Stith, Nathan, Steele, Erin Bone, Smith, Lawrence D., McConachie, Bruce, Jovanovic, Nenad, Hostetter, Elisabeth, Hostetter, Anthony, Earnest, Steve, Becker, Becky K., and Curry, J K

Published
2011

36. Contributors

Author

Wade, Leslie A., Stith, Nathan, Steele, Erin Bone, Smith, Lawrence D., McConachie, Bruce, Jovanovic, Nenad, Hostetter, Elisabeth, Hostetter, Anthony, Earnest, Steve, Becker, Becky K., and Curry, J K

Published
2011

41. Introduction

Author

Wade, Leslie A., Stith, Nathan, Steele, Erin Bone, Smith, Lawrence D., McConachie, Bruce, Jovanovic, Nenad, Hostetter, Elisabeth, Hostetter, Anthony, Earnest, Steve, Becker, Becky K., and Curry, J K

Published
2011

42. Melodramatic Borrowings: Life, Stage, Screen

Author

Wade, Leslie A., Stith, Nathan, Steele, Erin Bone, Smith, Lawrence D., McConachie, Bruce, Jovanovic, Nenad, Hostetter, Elisabeth, Hostetter, Anthony, Earnest, Steve, Becker, Becky K., and Curry, J K

Published
2011

44. Title

Author

Wade, Leslie A., Stith, Nathan, Steele, Erin Bone, Smith, Lawrence D., McConachie, Bruce, Jovanovic, Nenad, Hostetter, Elisabeth, Hostetter, Anthony, Earnest, Steve, Becker, Becky K., and Curry, J K

Published
2011

45. The Visual Poets

Author

Smith, Lawrence R. and Picchione, John

Published
1993

47. T.S. Ballad

Author

Smith, Lawrence R. and Picchione, John

Published
1993

48. Cover

Author

Smith, Lawrence R. and Picchione, John

Published
1993

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