التفاصيل البيبلوغرافية
| العنوان: |
Long- and Short-Range Ordered Gold Nanoholes as Large-Area Optical Transducers in Sensing Applications |
| المؤلفون: |
Maura Cesaria, Adriano Colombelli, Daniela Lospinoso, Antonietta Taurino, Enrico Melissano, Roberto Rella, Maria Grazia Manera |
| المصدر: |
Chemosensors; Volume 7; Issue 1; Pages: 13 |
| بيانات النشر: |
Multidisciplinary Digital Publishing Institute |
| سنة النشر: |
2019 |
| المجموعة: |
MDPI Open Access Publishing |
| مصطلحات موضوعية: |
unconventional lithography, ordered nanoholes, short-range ordered nanoholes, spectral response, nanoplasmonics, refractometric sensing |
| الوصف: |
Unconventional lithography (such as nanosphere lithography (NSL) and colloidal lithography (CL)) is an attractive alternative to sequential and very expensive conventional lithography for the low-cost fabrication of large-area nano-optical devices. Among these, nanohole (NH) arrays are widely studied in nanoplasmonics as transducers for sensing applications. In this work, both NSL and CL are implemented to fabricate two-dimensional distributions of gold NHs. In the case of NSL, highly ordered arrays of gold NHs distributed in a hexagonal lattice onto glass substrates were fabricated by a simple and reproducible approach based on the self-assembling of close-packed 500 nm diameter polystyrene particles at an air/water interface. After the transfer onto a solid substrate, the colloidal masks were processed to reduce the colloidal size in a controllable way. In parallel, CL was implemented with short-range ordered gold NH arrays onto glass substrates that were fabricated by electrostatically-driven self-assembly of negatively charged colloids onto a polydiallyldimethylammonium (PDDA) monolayer. These distributions were optimized as a function of the colloidal adsorption time. For both approaches, controllable and reproducible procedures are presented and discussed. The optical responses of the NH structures are related to the short-range ordering level, and their good performances as refractive index transducers are demonstrated. |
| نوع الوثيقة: |
text |
| وصف الملف: |
application/pdf |
| اللغة: |
English |
| Relation: |
https://dx.doi.org/10.3390/chemosensors7010013 |
| DOI: |
10.3390/chemosensors7010013 |
| الاتاحة: |
https://doi.org/10.3390/chemosensors7010013 |
| Rights: |
https://creativecommons.org/licenses/by/4.0/ |
| رقم الانضمام: |
edsbas.89FF93C3 |
| قاعدة البيانات: |
BASE |