Hemihelix

A hemihelix is a curved geometric shape consisting of a series of helices with alternating chirality, connected by a perversion at the reversals.^[1]^[2]

Video recording for a hemihelix with one perversion under water. Both ends are free to rotate.

The formation of hemihelices with periodic distributions of perversions in slender structures is understood in terms of competing buckling instabilities generated by in-plane stresses.^[3]

References

^ Amina Khan (April 24, 2014). "With a little rubber, scientists make weird, twisted hemihelix". Los Angeles Times.
^ Lydia Smith (April 24, 2014). "Scientists Discover New Rare 'Hemihelix' Shape Using Rubber Bands". International Business Times.
^ Liu, J.; Huang, J.; Su, T.; Bertoldi, K.; Clarke, D. R. (2014). "Structural Transition from Helices to Hemihelices". PLOS ONE. 9 (4): e93183. Bibcode:2014PLoSO...993183L. doi:10.1371/journal.pone.0093183. PMC 3997338. PMID 24759785.

External links

The dictionary definition of hemihelix at Wiktionary

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[1] Amina Khan (April 24, 2014). "With a little rubber, scientists make weird, twisted hemihelix". Los Angeles Times.

[2] Lydia Smith (April 24, 2014). "Scientists Discover New Rare 'Hemihelix' Shape Using Rubber Bands". International Business Times.

[3] Liu, J.; Huang, J.; Su, T.; Bertoldi, K.; Clarke, D. R. (2014). "Structural Transition from Helices to Hemihelices". PLOS ONE. 9 (4): e93183. Bibcode:2014PLoSO...993183L. doi:10.1371/journal.pone.0093183. PMC 3997338. PMID 24759785.

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