Posts Tagged ‘mechanical’

The quantization of space

Quantum mechanics defines our observable physical environment only in terms of the probabilistic values associated with Schrödinger’s wave equation. More specifically it defines a particle in terms of the instantaneous collapse of a wave function which it assumes extends form one edge of the universe to the other. Schrodinger Equation and Material Waves However this […]

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Mimicking biological stress–strain behaviour with synthetic elastomers

Despite the versatility of synthetic chemistry, certain combinations of mechanical softness, strength, and toughness can be difficult to achieve in a single material. These combinations are, however, commonplace in biological tissues, and are therefore needed for applications such as medical implants, tissue engineering, soft robotics, and wearable electronics. Present materials synthesis strategies are predominantly Edisonian, involving the empirical mixing of assorted monomers, crosslinking schemes, and occluded swelling agents, but this approach yields limited property control. Here we present a general strategy for mimicking the mechanical behaviour of biological materials by precisely encoding their stress–strain curves in solvent-free brush- and comb-like polymer networks (elastomers). The code consists of three independent architectural parameters—network strand length, side-chain length and grafting density. Using prototypical poly(dimethylsiloxane) elastomers, we illustrate how this parametric triplet enables the replication of the strain-stiffening characteristics of jellyfish, lung, and arterial tissues.

The quantum properties of non-point particles

Quantum theory: it’s unreal We know that everything in the universe including particles have physical size. Even so for the past 50 years, the Standard Model of particle physics which many say has given us the most complete mathematical description of the particles and forces that shape our world ignores this fact and treats them […]

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Can ‘mood ring’ sensors warn before bridges fail?

Scientists are working with “mood ring” materials as a potential way to minimize and mitigate […]

The post Can ‘mood ring’ sensors warn before bridges fail? appeared first on Futurity.

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