当前位置：
X-MOL 学术
›
Adv. Mater.
›
论文详情
Our official English website, www.x-mol.net, welcomes your
feedback! (Note: you will need to create a separate account there.)
A Plasmonic Sensor Array with Ultrahigh Figures of Merit and Resonance Linewidths down to 3 nm
Advanced Materials ( IF 27.4 ) Pub Date : 2018-02-06 , DOI: 10.1002/adma.201706031 Bowen Liu 1, 2 , Shu Chen 2 , Jiancheng Zhang 3 , Xu Yao 1 , Jinhui Zhong 1 , Haixin Lin 1 , Tengxiang Huang 1 , Zhilin Yang 2 , Jinfeng Zhu 4 , Shou Liu 2 , Christoph Lienau 5 , Lei Wang 3 , Bin Ren 1
Advanced Materials ( IF 27.4 ) Pub Date : 2018-02-06 , DOI: 10.1002/adma.201706031 Bowen Liu 1, 2 , Shu Chen 2 , Jiancheng Zhang 3 , Xu Yao 1 , Jinhui Zhong 1 , Haixin Lin 1 , Tengxiang Huang 1 , Zhilin Yang 2 , Jinfeng Zhu 4 , Shou Liu 2 , Christoph Lienau 5 , Lei Wang 3 , Bin Ren 1
Affiliation
|
Surface plasmon polaritons (SPPs) are extremely sensitive to the surrounding refractive index and have found important applications in ultrasensitive label‐free sensing. Reducing the linewidth of an SPP mode is an effective way to improve the figure of merit (FOM) and hence the sensitivity of the plasmonic mode. Many efforts have been devoted to achieving a narrow linewidth by mode coupling, which inevitably results in an asymmetrical lineshape compromising the performance. Instead, the SPP modes are directly narrowed by elaborately engineering periodic plasmonic structures with minimized feature sizes to effectively reduce the radiative losses. A narrow linewidth smaller than 8 nm is achieved over a wide wavelength ranging from 600 to 960 nm and a minimum full width at half maximum of 3 nm at 960 nm. Benefiting from the almost perfect Lorentzian lineshape and the extremely narrow linewidth, a record FOM value of 730 is obtained. The sensor is capable of detecting bovine serum albumin with an ultralow concentration of 10−10m. The sensor has great potential for practical application for its ultrahigh FOM, broad working wavelength, and ease of high‐throughput fabrication.
中文翻译：
具有超高品质因数和共振线宽低至3 nm的等离子传感器阵列
表面等离激元极化子（SPPs）对周围的折射率极为敏感，并已在超灵敏的无标记感测中发现了重要的应用。减小SPP模式的线宽是一种提高品质因数（FOM）并因此提高等离激元模式灵敏度的有效方法。已经进行了许多努力来通过模式耦合来实现较窄的线宽，这不可避免地导致线形不对称，从而损害了性能。取而代之的是，通过精心设计具有最小特征尺寸的周期性等离激元结构来直接缩小SPP模式，以有效地减少辐射损耗。在600至960 nm的宽波长范围内，可实现小于8 nm的窄线宽，而在960 nm处，其最小全宽为3 nm的一半最大值。得益于几乎完美的洛伦兹线形和极窄的线宽，FOM值达到了创纪录的730。该传感器能够检测10的超低浓度的牛血清白蛋白-10 m。该传感器具有超高FOM，宽工作波长和易于高通量制造的特点，在实际应用中具有巨大潜力。
更新日期：2018-02-06
中文翻译：
具有超高品质因数和共振线宽低至3 nm的等离子传感器阵列
表面等离激元极化子（SPPs）对周围的折射率极为敏感，并已在超灵敏的无标记感测中发现了重要的应用。减小SPP模式的线宽是一种提高品质因数（FOM）并因此提高等离激元模式灵敏度的有效方法。已经进行了许多努力来通过模式耦合来实现较窄的线宽，这不可避免地导致线形不对称，从而损害了性能。取而代之的是，通过精心设计具有最小特征尺寸的周期性等离激元结构来直接缩小SPP模式，以有效地减少辐射损耗。在600至960 nm的宽波长范围内，可实现小于8 nm的窄线宽，而在960 nm处，其最小全宽为3 nm的一半最大值。得益于几乎完美的洛伦兹线形和极窄的线宽，FOM值达到了创纪录的730。该传感器能够检测10的超低浓度的牛血清白蛋白-10 m。该传感器具有超高FOM，宽工作波长和易于高通量制造的特点，在实际应用中具有巨大潜力。
京公网安备 11010802027423号