研究目的
To develop a simple and systematic method to fabricate tunable and stable Au–Ag nanowire-based plasmonic metamaterials with sub-10 nm bimetallic heterogeneous nanogaps for applications in SERS substrate, plasmon devices, catalysis, and printed electronics.
研究成果
The study successfully fabricates sub-10 nm Au–Ag heterogeneous plasmonic nanogaps using a nanoskiving technique, demonstrating significant SERS enhancement and stronger electric fields compared to monometallic nanogaps. These findings suggest promising applications in SERS substrates, plasmon devices, catalysis, and printed electronics.
研究不足
The study focuses on the fabrication and optical properties of Au–Ag heterogeneous nanogaps but does not extensively explore their long-term stability under various environmental conditions or their scalability for industrial applications.
1：Experimental Design and Method Selection:
The study employs a nanoskiving technique to fabricate Au–Ag bimetallic heterogeneous nanogaps. This method is chosen for its simplicity, ultrarapid processing, and robustness.
2：Sample Selection and Data Sources:
The samples are fabricated by depositing gold/aluminum/silver films on an epoxy substrate, which are then sectioned into thin slabs to form nanogaps.
3：List of Experimental Equipment and Materials:
Key materials include gold, silver, aluminum, and epoxy resin. Equipment includes a jeweler saws, ultramicrotome, and scanning electron microscopy (SEM) for characterization.
4：Experimental Procedures and Operational Workflow:
The process involves depositing metal films on an epoxy substrate, embedding and sectioning the films, transferring slabs to a gold film, and removing the aluminum sacrificial layer to form nanogaps.
5：Data Analysis Methods:
The optical properties of the nanogaps are evaluated using SERS spectra, and the EM field intensity and distribution are analyzed using 3D finite-difference time domain (FDTD) simulations.
独家科研数据包，助您复现前沿成果，加速创新突破
获取完整内容
