Ms. Alice Greenberg Profile

Alice Greenberg

at Univ of Oregon

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 | 7 September 2018 Presentation + Paper

Investigation of mechanical torque applied by electron vortex beams in a liquid cell

Alice Greenberg, Hannah DeVyldere, Jordan Pierce, Benjamin McMorran

Proceedings Volume 10723, 107231O (2018) https://doi.org/10.1117/12.2323187

KEYWORDS: Nanoparticles, Liquids, Transmission electron microscopy, Diffraction, Diffraction gratings

Read Abstract +

Electron beams carrying orbital angular momentum (OAM), or electron vortex beams (EVBs), can be produced in a Transmission Electron Microscope (TEM) with forked diffraction gratings.^1,2 Just as optical vortex beams can be used to trap and rotate particles, EVBs have been reported to transfer their OAM to a nanoparticle on a dry substrate and cause it to spin.^3,4 However the results have not been reproduced, perhaps due to contact friction. It has been suggested that a more dramatic effect could be observed by imaging particles levitated in an optical trap or in a liquid environment. ^3,5,6 To reproduce these results and demonstrate a more pronounced response, we are performing experiments to transfer OAM from an EVB to a nanoparticle suspended in a fluid. TEM liquid cells consist of a liquid sample sealed against the vacuum of the standard TEM column between two electron-transparent windows. These cells have enabled the study of liquid samples at nanometer to atomic resolution and have applications in the study of microfluidics, electrochemical processes, and biological samples. Electron vortex beams could provide a useful new tool to manipulate nanoparticles and liquids themselves inside such cells. Here we describe an experimental investigation of EVB-induced rotation in a liquid and show that initial results are inconclusive. A theoretical consideration using the fluctuation-dissipation theorem suggests that, unlike in an optical trap, viscous forces and rotational Brownian motion may overwhelm the subtle torqueing effect the EVB has on the particle.

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