Functional Nanoparticles, from Single-Particle to Assembly
A special issue of Micromachines (ISSN 2072-666X). This special issue belongs to the section "E：Engineering and Technology".
Deadline for manuscript submissions: closed (30 June 2023) | Viewed by 159
Special Issue Editor
Special Issue Information
Dear Colleagues,
Nanoparticles can support sizes, shapes, and compositions dependent on optical, magnetic, electric, and mechanical properties, among others. The large surface-area-to-volume ratio and confinement at the nanoscale cause deviation from the bulk properties. For example, size-dependent resonances from nanoparticles such as plasmonics and quantum dots provide selective responses to electromagnetic waves. Detecting resonances with single-particle accuracy offers precise information on structure–property relationships by eliminating the impact of sample heterogeneity. Characterizing the time and spatial scale of the relevant events on nanoparticles, including energy and charge transfer under external fields or in chemical environments, can guide the design of coupling between nanoparticles.
In analogy to the construction of molecules and solids with atoms, the assembly of nanoparticles spans from clusters of few nanoparticles to 2D or 3D extended superlattices. Structurally, the coupling of nanoparticles depends on organization and interparticle distances. Thus, programmed nanoparticle assembly is desirable for achieving designed properties and, furthermore, multifunctionality when different types of nanoparticles are co-assembled. While high uniformity contributes to isotropicity, purposely engineering heterogeneity and defects can facilitate beneficial field and energy localization. Achieving microsystems based on nanoparticle building blocks is an important future direction requiring both advanced fabrication and synthetic capabilities, as well as a fundamental understanding of the physical and chemical processes at the nanoscale.
Dr. Yiyu Cai
Guest Editor
Manuscript Submission Information
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Keywords
- plasmonics
- single particle spectroscopy
- catalysis
- nanofabrication
- self-assembly
