Ms. Ji-Young Lee Profile

Ji-Young Lee

SPIE Involvement:

Author

Publications (1)

This will count as one of your downloads.

You will have access to both the presentation and article (if available).

DOWNLOAD NOW

This content is available for download via your institution's subscription. To access this item, please sign in to your personal account.

Email or Username Forgot your username?

Password Forgot your password?

Show

Keep me signed in

No SPIE account? Create an account

Proceedings Article | 21 August 2020 Presentation + Paper

Fluorescence decay rate engineering using aluminum nanohole arrays

Ji-Young Lee, Yunshan Wang

Proceedings Volume 11466, 114660C (2020) https://doi.org/10.1117/12.2567766

KEYWORDS: Luminescence, Aluminum, Ultraviolet radiation, Plasmonics, Nanostructures, Spectroscopy, Molecules

Read Abstract +

UV plasmonics has drawn increased attention in recent years, holding promise in enabling label-free sensing of biomolecules such as DNA, peptides, and proteins whose intrinsic fluorescence lies in the UV range. However, these biomolecules exhibit relatively small quantum yields (QY) and extinction cross sections. In order to realize label-free detection of biomolecules, significant enhancement needs to be achieved. Several plasmonic structures have been reported to enhance native fluorescence of DNA and amino acids, with <80 x net enhancement for DNA and <15 x net enhancement for amino acids. Orders of magnitude improvement in the net enhancement factor are needed in order to achieve a detection limit comparable to commercial bioassays. In addition, quantitative fluorescence analysis that can differentiate the contribution of radiative and excitation enhancement is needed for UV studies. Here we report fluorescence enhancement of tryptophan on aluminum hole arrays. By optimizing excitation geometry, the hole size and spacings, we are able to achieve <40 x net enhancement factor, the highest ever observed for tryptophan molecules. We conducted photobleaching experiments and observed 2 x reduction in the fluorescence decay rate on the aluminum hole array compared to an aluminum thin film. The enhancement of total photon yield reaches 17 x, which indicates enhanced radiative rate. The studies we conducted will pave a way for label-free biosensing using UV plasmonics.

My Library

You currently do not have any folders to save your paper to! Create a new folder below.

Folder Name

Folder Description

View contact details

UPDATE YOUR PROFILE

Is this your profile? Update it now.

Sign into your SPIE.org account

Don’t have a profile and want one?

Create an account on SPIE.org

Access to the requested content is limited to institutions that have purchased or subscribe to SPIE eBooks. You are receiving this notice because your organization may not have SPIE eBooks access.*

*Shibboleth/Open Athens users─please sign in to access your institution's subscriptions.

To obtain this item, you may purchase the complete book in print or electronic format on SPIE.org.

ORGANIZATIONAL
Sign in with credentials provided by your organization.

Organizational Username

Organizational Password

Show/Hide Password

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

;

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available

Members:

Non-members: ADD TO CART

Keywords/Phrases

Search In:

Publication Years