London force and energy transportation between interfacial surfaces

David Bradshaw, Jamie Leeder, Justo Rodriguez, David L. Andrews

Research output: Contribution to conferencePaperpeer-review


With appropriately selected optical frequencies, pulses of radiation propagating through a system of chemically distinct and organized components can produce areas of spatially selective excitation. This paper focuses on a system in which there are two absorptive components, each one represented by surface adsorbates arrayed on a pair of juxtaposed interfaces. The adsorbates are chosen to be chemically distinct from the material of the underlying surface. On promotion of any adsorbate molecule to an electronic excited state, its local electronic environment is duly modified, and its London interaction with nearest neighbor molecules becomes accommodated to the new potential energy landscape. If the absorbed energy then transfers to a neighboring adsorbate of another species, so that the latter acquires the excitation, the local electronic environment changes and compensating motion can be expected to occur. Physically, this is achieved through a mechanism of photon absorption and emission by molecular pairs, and by the engagement of resonance transfer of energy between them. This paper presents a detailed analysis of the possibility of optically effecting such modifications to the London force between neutral adsorbates, based on quantum electrodynamics (QED). Thus, a precise link is established between the transfer of excitation and ensuing mechanical effects.
Original languageEnglish
Number of pages1
Publication statusPublished - 21 Aug 2008
EventPhysical Chemistry of Interfaces and Nanomaterials V - San Diego, United States
Duration: 11 Aug 2008 → …


ConferencePhysical Chemistry of Interfaces and Nanomaterials V
Country/TerritoryUnited States
CitySan Diego
Period11/08/08 → …

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