The formation of gratings on gold nanoprisms arrays by plasmon-mediated reduction of a diazonium salt is investigated. Nanosphere lithography (NSL) is used to produce large surfaces of gold nanoprisms that are effective at reducing diazonium salts by producing hot electrons through excitation of localized surface plasmon resonances (LSPRs). Using single beam irradiation, we report here on the formation of periodic structures formed from the diazonium salts and that follow the NSL structures. On plasmonically active nanoprism substrates, the electric field enhancement promotes chemical reduction and hence modifies the grafting direction and grating properties of the ripples. The nanoprisms act as a plasmon guide which widens the pitch of the self-organized gratings and can even alter it from straight lines into a crisscross pattern.

研究了通过等离子激元还原重氮盐在金纳米棱镜阵列上形成光栅。纳米球光刻（NSL）用于产生金纳米棱镜的大表面，该金纳米棱镜通过通过激发局部表面等离振子共振（LSPR）产生热电子来有效还原重氮盐。使用单束辐射，我们在此报告由重氮盐形成并遵循NSL结构的周期性结构的形成。在具有等离子体活性的纳米棱镜基板上，电场增强会促进化学还原，从而改变波纹的接枝方向和光栅特性。纳米棱镜充当等离激元导向器，可扩大自组织光栅的间距，甚至可以将其从直线变为十字形。