کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1785542 1023384 2015 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Nanoscale metal pillar arrays on elastomeric substrates for surface-enhanced Raman spectroscopy platform
ترجمه فارسی عنوان
آرایه های ستون فلزی نانوساختار بر روی بسترهای الاستومری برای پلت فرم اسپکتروسکوپی رامان
موضوعات مرتبط
مهندسی و علوم پایه فیزیک و نجوم فیزیک ماده چگال
چکیده انگلیسی

The nanostructures found in nature sometimes have elaborate, three-dimensional structures that consist of soft and flexible constituents, and which exhibit diverse mechanical and optical functions. Here, we introduce a facile, low-cost and scalable nanofabrication approach based on a hot embossing process that can replicate sub-micron to nanoscale features on elastomeric substrates. We have further developed this technique to achieve polymer/metal heterostructure nanopillar arrays via conformal coating of Au films on polymeric templates. Each nanopillar displays a smooth surface and a constant diameter along the vertical direction. Raman spectroscopy studies revealed that the metallic nanostructures decorated with methylene blue exhibited a dominant Raman peak at 1624 cm−1 that was enhanced more than 3000 times and seven times relative to bare planar Si and Au-coated planar polystyrene substrates, respectively. These results indicate that our nanopillar array can be exploited as a flexible, large area platform for surface-enhanced Raman spectroscopy.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Current Applied Physics - Volume 15, Issue 6, June 2015, Pages 711–716
نویسندگان
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