I see the term spontaneous generation as being applicable to "smart materials" that respond to certain external stresses in predictable and controllable ways.
Smart materials, discover the materials with which we will shape the future
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Materials science is a continual source of discoveries that could revolutionise our future.
WHAT ARE SMART MATERIALS?
TYPES OF SMART MATERIALS
Piezoelectric materials
They can convert mechanical energy into electrical energy and vice versa. For example, they change their shape in response to an electrical impulse or produce an electrical charge in response to an applied mechanical stress.
Shape memory materials
They have the ability to change the shape, even returning to their original shape, when exposed to a heat source, among other stimuli.
Chromoactive materials
They change colour when subjected to a certain variation in temperature, light, pressure, etc. Nowadays, they are used in sectors such as optics, among others.
Magnetorheological materials
They change their properties when exposed to a magnetic field. For example, they are currently used in shock absorbers to prevent seismic vibrations in bridges or skyscrapers.
Photoactive materials
There are several types: electroluminescents emit light when they are fed with electrical impulses, fluorescents reflect light with greater intensity and phosphorescents are able to emit light after the initial source has ceased.
EXAMPLES AND APPLICATIONS OF SMART MATERIALS
- Synthetic spider web. This material is not only five times stronger than steel, but also has great elasticity. Its potential uses include: bulletproof clothing, artificial skin for burns or waterproof adhesives.
- Shrilk. Its main component is chitin, a carbohydrate found in krill shells. It was created by researchers from Harvard University and is considered the ideal substitute for plastic — since its decomposition time is only two weeks and it also works as a stimulant for plant growth —.
- Graphene. Its potential uses are almost unlimited: batteries with more autonomy, cheaper photovoltaic solar cells faster computers, flexible electronic devices, more resistant buildings, bionic limbs, etc. All this is possible thanks to their multiple properties.
https://www.iberdrola.com/innovation/smart-materials-applications-examples
Seems to me that many emergent properties of complex patterns would qualify as spontaneous generating objects.
Water and Ice are spontaneously generated substances.
Is that not covered by the concept of self-assembling emergent patterns?