Koheosion

Koheosion is a proposed phenomenon in condensed matter physics and materials science describing a cooperative enhancement of interfacial cohesion among layered materials, arising from synchronized vibrational or electronic excitations. It is used to refer to an apparent increase in binding strength beyond conventional interlayer forces like van der Waals or chemical bonding under certain stimuli.

Etymology: The term Koheosion is a portmanteau of "cohesion" and a prefix indicating collective or coordinated action. It has appeared in speculative discussions and some theoretical papers to name this hypothetical mechanism.

Mechanism: In layered systems such as two-dimensional materials or composites, external stimuli (phonon excitation, optical fields, or electric fields) could promote collective oscillations that transiently lower interfacial energy or generate short-lived bonding networks, resulting in an effective increase in cohesion. The mechanism is not universally agreed and may depend strongly on material, interface chemistry, and stimulus.

Experimental status: Reported observations are controversial; some studies claim anomalous adhesion or cohesion under specific conditions, while others attribute effects to measurement artifacts or conventional explanations. There is no established consensus or robust replication as of now.

Implications and scope: If validated, koheosion could influence design of layered materials, adhesives, and mechanical metamaterials by enabling tunable cohesion. It would require careful control of interfaces and stimuli and would likely be transient.

See also: cohesion, interlayer bonding, van der Waals forces, superlubricity.