Kirigami: Engineering in a World of Friction

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Bioinspired kirigami metasurfaces as assistive shoe grips Abstract Falls and subsequent complications are major contributors to morbidity and mortality, especially in older adults. Here, by taking inspiration from claws and scales found in nature, we show that buckling kirigami structures applied to footwear outsoles generate higher friction forces in the forefoot and transversally to the direction of movement. We identified optimal kirigami designs capable of modulating friction for a range of surfaces, including ice, by evaluating the performance of the dynamic kirigami outsoles through numerical simulations and in vitro friction testing, as well as via human-gait force-plate measurements. We anticipate that lightweight kirigami metasurfaces applied to footwear outsoles could help mitigate the risk of slips and falls in a range of environments. Babaee, S., Pajovic, S., Rafsanjani, A. et al. Bioinspired kirigami metasurfaces as assistive shoe grips. Nat Biomed Eng (2020). https://doi.org/10.1038/s41551-020-0564-3

See also on W2tQ:
RA of Eng - Healthcare challenges needing engineering expertise


My source:
Kirigami keeps your feet on the ground. The Times, News, 2 June, 2020, p.16 and 27.

#EndPJparalysis - NHS 70

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For people who are agitated and living with dementia their carers may learn to remove such cues as hat, coat and shoes. Seeing these may cause increased agitation as a need to be elsewhere. For #EndPJparalysis perhaps we can reverse this and use the sight clothes and footwear as a cue for 'get up & try to go'.	Required: decent research on hypoactive delirium and sleep (need to engage Prof Anita Simonds at the Brompton for this), and how to #endPJParalysis70 in hypoactive delirium. — shibley rahman (@dr_shibley) April 16, 2018

My source:

Please retweet
One week to go and the #endPJparalysis70 challenge begins. Right now, we need as many clinicians to download the #endPJparalysis app as possible so we can reach 14,286 patients a day for 70 days to reach our goal.
Here, the inimitable @Sonia_Sparkles shows us how pic.twitter.com/U8D5R663ui

— Brian Dolan RMN, RGN (@BrianwDolan) April 10, 2018

Perceptive Movement (Fifteen Points in 1 of 4)

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My source:
A presentation at Conceptual Spaces at Work 2012
& Brilliant Ideas, Bloomberg, Random International

Metamorphosis (Ste p e-learning [curve?] )

I'm walking over ground of a gradually steepening pitch. At a certain point, I pause and start using my hands; the real mountain begins. I am climbing. Do I, as soon as my back slopes forward, return to the state of the quadruped? Almost: my body transforms; feet become hands and my two manual grips secure balance. Homo erectus, the standing man, of recent date, reverts back to the one from whom he is descended: the archaic quadrumane. This thunderbolt recollection became so black, in me, that I no longer fear to speak of the beast; I remember who we were (p.3).

Michel Serres (1999) Variations on the Body, Univocal.