Electronics & Semiconductors

A solar cell you can bend and soak in water

Researchers from the RIKEN Center for Emergent Matter Science and collaborators have developed an organic photovoltaic film that is both waterproof and flexible, allowing a solar cell to be put onto clothes and still function ...

Engineering

Predicting the complex propagation of 3D fractures

Fracture propagation is ubiquitous across different temporal and spatial scales. Examples include the breaking of a vase, fatigue cracks in machine parts, and scars left by strong earthquakes. Understanding 3D fracture propagation ...

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Stress (biological)

Stress is a biological term which refers to the consequences of the failure of a human or animal to respond appropriately to emotional or physical threats to the organism, whether actual or imagined. It includes a state of alarm and adrenaline production, short-term resistance as a coping mechanism, and exhaustion. Common stress symptoms include irritability, muscular tension, inability to concentrate and a variety of physical reactions, such as headaches and elevated heart rate.

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