Dr. Robert I. Hunter Profile

Dr. Robert I. Hunter

at Univ. of St. Andrews

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 | 10 June 2024 Presentation + Paper

Flexible holographic metasurfaces for shape dependent imaging and curvature sensing

Jianling Xiao, Tomasz Plaskocinski, Robert Hunter, Mohammad Biabanifard, Duncan Robertson, Graham Smith, Simon Horsley, Sebastian Schulz, Andrea Di Falco

Proceedings Volume 12990, 1299005 (2024) https://doi.org/10.1117/12.3016828

KEYWORDS: Holograms, Holography, Fabrication, Sensors, Nanorods, Phase shifts, Calibration, Polymethylmethacrylate

Read Abstract +

Flexible holographic metasurfaces offer significant versatility in optical imaging applications due to their ability to conform to non-flat objects and effectively manipulate optical properties. In this paper, we present the design, fabrication, and characterization of two functional imaging applications that utilize flexible holographic metasurfaces when the substrate radius of curvature is comparable to or much larger than the metasurfaces. For the first application, shape-dependent conformable holographic metasurfaces operate in the millimeter wavelength range. The images can be encoded with the target curvature and, more interestingly, the metasurface can encode two independent images within a single hologram. By bending the substrate to either a convex or concave shape, two switchable images can be revealed. The other application is a self-calibrated curvature sensor that operates in the visible range. The sensor consists of two distinct areas formed by metasurfaces that generate images of a two-dimensional reference scale and a dot image. The dot image acts as a displacement indicator and shifts within the scale as the metasurface deforms, providing an instant readout of the radius of curvature of an object that hosts the sensor on its surface, without the need for pre-calibration process. These two demonstrations expanded the use of metasurfaces for out-of-lab applications, particularly in tunable optomechanical sensors for radar and antennas, and in real-time curvature monitoring.

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