Background: Nanoparticulate systems like nanospheres, nanocrystals, and nanofluids show immense advancement in the fields of nanoelectronic and agriculture. Nanobulges are duplexed nanoparticles comprising the interaction of two nanoparticles for the formation of a curved bulge on the surface of the nanoparticle.

Objective: This review focuses on properties, mechanism of action, methods of preparation and applications of nanobulges in optoelectronic devices and controlled release of fertilizers.

Methods: Mostly pulsed laser deposition and multilayered palladium-catalysts fabrication with nanobulges structure are used to prepare nanobulges.

Results: Nanobulges are advantageous over the conventional nanoparticles due to their high electrical density, improved catalytic drug loading and good electronic conductivity.

Conclusion: In the near future, nanobulges will emerge as a promising material for commercial preparation of bioanalytical sensors and microfluidic systems.

背景：纳米颗粒系统（如纳米球，纳米晶体和纳米流体）在纳米电子和农业领域显示出巨大的进步。纳米凸起是包含两个纳米颗粒相互作用的双链纳米颗粒，用于在纳米颗粒的表面上形成弯曲的凸起。

目的：这篇综述着重于纳米膨胀剂在光电器件中的性质，作用机理，制备方法和应用以及肥料的控释。

方法：主要采用脉冲激光沉积和具有纳米凸起结构的多层钯催化剂制备纳米凸起。

结果：纳米凸起由于其高电密度，改进的催化药物负载和良好的电导率而优于常规纳米颗粒。

结论：在不久的将来，纳米凸起将成为有前途的材料，可用于生物分析传感器和微流体系统的商业制备。