Lamina Emergent Mechanisms (also known as LEMs) are more commonly referred to as "Pop-up Mechanisms" as seen in
"pop-up-books". LEM is the technical term of such mechanisms or engineering. LEMs are a subset of
compliant mechanism
In mechanical engineering, a compliant mechanism is a flexible mechanism that achieves force and motion transmission through elastic body deformation. It gains some or all of its motion from the relative flexibility of its members rather than fr ...
s fabricated from planar materials (lamina) and have motion emerging from the fabrication plane. LEMs use compliance, or the deflection of flexible members to achieve motion.
Background
Ortho-Planar Mechanisms are an earlier concept similar to LEMs. More well known LEMs include
pop-up book
A pop-up book is any book with three-dimensional space, three-dimensional pages, often with elements that ''pop up'' as a page is turned. The terminology serves as an umbrella term for movable book, pop-ups, tunnel books, transformations, volvel ...
s, flat-folding
origami
) is the Japanese art of paper folding. In modern usage, the word "origami" is often used as an inclusive term for all folding practices, regardless of their culture of origin. The goal is to transform a flat square sheet of paper into a ...
mechanisms, origami stents, and deployable mechanisms. The research in LEMs also overlaps with
deployable structure
A deployable structure is a structure that can change shape so as to significantly change its size.
Examples of deployable structures are umbrellas, some tensegrity structures, bistable structures, some Origami shapes and scissor-like structures. ...
s,
origami
) is the Japanese art of paper folding. In modern usage, the word "origami" is often used as an inclusive term for all folding practices, regardless of their culture of origin. The goal is to transform a flat square sheet of paper into a ...
,
kirigami
is a variation of origami, the Japanese art of folding paper. In , the paper is cut as well as being folded, resulting in a three-dimensional design that stands away from the page. typically does not use glue.
Overview
In the United States, t ...
,
compliant mechanism
In mechanical engineering, a compliant mechanism is a flexible mechanism that achieves force and motion transmission through elastic body deformation. It gains some or all of its motion from the relative flexibility of its members rather than fr ...
s,
microelectromechanical systems
MEMS (micro-electromechanical systems) is the technology of microscopic devices incorporating both electronic and moving parts. MEMS are made up of components between 1 and 100 micrometres in size (i.e., 0.001 to 0.1 mm), and MEMS devices ...
,
packaging engineering
Packaging engineering, also package engineering, packaging technology and packaging science, is a broad topic ranging from design conceptualization to product placement. All steps along the manufacturing process, and more, must be taken into ...
,
robotics
Robotics is the interdisciplinary study and practice of the design, construction, operation, and use of robots.
Within mechanical engineering, robotics is the design and construction of the physical structures of robots, while in computer s ...
,
paper engineering
Paper engineering is a branch of engineering that deals with the usage of physical science (e.g. chemistry and physics) and life sciences (e.g. biology and biochemistry) in conjunction with mathematics as applied to the converting of raw materia ...
,
developable mechanisms, and more.
References
{{Reflist
External links
Compliant Mechanism Research Group at BYUMotion Structure research at Oxfordby
Tomohiro Tachi
Tomohiro Tachi (, born 1982) is a Japanese academic who studies origami from an interdisciplinary perspective, combining approaches from the mathematics of paper folding, structural rigidity, computational geometry, architecture, and materials s ...
Metamorphic Mechanism research at King's College London
Mechanisms (engineering)
Robotics hardware
Paper folding