The non-stationary case of the Maxwell-Garnett theory: growth of nanomaterials (2D gold flakes) in solution.

ABSTRACT: The solution-based growth mechanism is a common process for nanomaterials. The Maxwell-Garnett theory (for light-matter interactions) describes the solution growth in an effective medium, homogenized by a mean electromagnetic field, which applies when materials are in a stationary phase. However, the charge transitions (inter- and intra-transitions) during the growth of nanomaterials lead to a non-stationary phase and are associated with time-dependent permittivity constant transitions (for nanomaterials). Therefore, time-independence in the standard Maxwell-Garnett theory is lost, resulting in time dependence, ε _i(t). This becomes important when the optical spectrum of a solution needs to be deconvoluted at different reaction times since each peak represents a spe

SUBMITTER: Natarajan P 

PROVIDER: S-EPMC9419469 | biostudies-literature | 2020 Mar

REPOSITORIES: biostudies-literature