Applied Physics, Zernike Institute for Advanced Materials, University of Groningen, Nijenborgh 4, 9747 AG Groningen, The Netherlands.
ACS Nano. 2012 Oct 23;6(10):9214-20. doi: 10.1021/nn303571p. Epub 2012 Sep 27.
The controlled positioning of nanostructures with active molecular components is of importance throughout nanoscience and nanotechnology. We present a novel three-step method to produce nanostructures that are selectively decorated with functional molecules. We use fluorophores and nanoparticles to functionalize SiO features with defined shapes and with sizes ranging from micrometers to 25 nm. The method is called MACE-ID: molecular assembly controlled by electron-beam-induced deposition. In the first step, SiO nanostructures are written with focused electron-beam-induced deposition, a direct-writing technique. In the second step, the deposits are selectively silanized. In the final step, the silanes are functionalized with fluorescent dyes, polystyrene spheres, or gold nanoparticles. This recipe gives exciting new possibilities for combining the highly accurate control of top-down patterning (e-beam direct writing) with the rich variety of the bottom-up approach (self-assembly), leading to active or responsive surfaces. An important advantage of MACE-ID is that it can be used on substrates that already contain complex features, such as plasmonic structures, nanoantennas, and cavities.
在纳米科学和纳米技术中，对带有活性分子组件的纳米结构进行控制定位非常重要。我们提出了一种新的三步法来制备选择性地用功能分子修饰的纳米结构。我们使用荧光染料和纳米粒子来对具有确定形状和尺寸（从微米到 25nm 不等）的 SiO 特征进行功能化。该方法称为 MACE-ID：电子束诱导沉积控制的分子组装。在第一步中，使用聚焦电子束诱导沉积（一种直写技术）在 SiO 纳米结构上进行书写。在第二步中，对沉积物进行选择性硅烷化。在最后一步中，硅烷用荧光染料、聚苯乙烯球或金纳米粒子进行功能化。这种方法为将自上而下的图案化（电子束直写）的高度精确控制与自下而上方法（自组装）的丰富多样性相结合提供了令人兴奋的新可能性，从而产生了主动或响应表面。MACE-ID 的一个重要优点是它可以用于已经包含复杂特征的基底上，例如等离子体结构、纳米天线和腔体。
