التفاصيل البيبلوغرافية
| العنوان: |
A novel concept for a mid-field microscope |
| المؤلفون: |
Docter, M.W. (author), Young, I.T. (author), Kutchoukov, V.G. (author), Bossche, A. (author), Alkemade, P.F.A. (author), Garini, Y. (author) |
| بيانات النشر: |
SPIE |
| سنة النشر: |
2005 |
| المجموعة: |
Delft University of Technology: Institutional Repository |
| مصطلحات موضوعية: |
plasmons, mid-field, nanostructure, hole array, near-field, high resolution, microscopy |
| الوصف: |
When light passes through a hole smaller than the wavelength of the light, the transmission is very low and the light is diffracted. This however changes if holes are arranged in a periodic array on metal. In that case the light couples to surface plasmons; this results in enhanced transmission, spectral selection and a small angular diffraction. We develop a novel microscopic method based on a periodic hole-array, which will be used as a multiple-apertures near-field source for illuminating a biological sample while the light is collected in far-field. The measurement speed is high, due to the use of an array instead of a single source. The main advantage of this microscope originates from the low diffraction of light through a relatively thick sample with enhanced transmission. It results in the ability to measure the samples interior and 3D reconstruction can be made by semi-confocal techniques. This overcomes the major limitation of near-field methods for which only a shallow layer of the surface (~20 nm) is detectable. For our measurements we use glass coated devices. The holes are processed with a focused ion beam. The photonplasmon coupling process is characterized as a function of the wavelength. Our experiments aim on gaining a better understanding of the transmission process. We tested the dependence of the transmitted spectrum on angle of incidence was tested as well as far-field spectral imaging measurements of the transmission in both Koehler and collimated light illumination. The results as well as the description of the microscope that we are constructing are presented. ; Imaging Science and Technology ; Applied Sciences |
| نوع الوثيقة: |
conference object |
| اللغة: |
English |
| Relation: |
Proceedings of SPIE, 2005 vol. 5703--0277-786X; http://resolver.tudelft.nl/uuid:f7b1e21d-25b0-4ba4-b59d-d50b105643ce |
| الاتاحة: |
http://resolver.tudelft.nl/uuid:f7b1e21d-25b0-4ba4-b59d-d50b105643ce |
| Rights: |
(c)2005 Docter, M.W., Young, I.T., Kutchoukov, V.G., Bossche, A., Alkemade, P.F.A., Garini, Y. |
| رقم الانضمام: |
edsbas.E11BA2B1 |
| قاعدة البيانات: |
BASE |