Mr. Dean Hobbis Profile

Dean Hobbis

at Univ of South Florida

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 | 23 April 2020 Presentation + Paper

Meso-, micro-, and nano-structures induced in bismuth telluride thermoelectric materials by laser additive manufacturing

Ryan Welch, Dean Hobbis, George Nolas, Saniya LeBlanc

Proceedings Volume 11387, 1138710 (2020) https://doi.org/10.1117/12.2558676

KEYWORDS: Bismuth, Thermoelectric materials, Laser processing, Additive manufacturing, Manufacturing, Laser manufacturing

Read Abstract +

Thermoelectric devices are solid-state energy conversion devices that are used in thermal management and waste heat recovery applications. Current thermoelectric devices are limited in their geometries, and the manufacturing process is labor-intensive. The traditional manufacturing methods limit the widespread use of thermoelectric modules in potential application areas. To address this issue and expand the use of thermoelectric devices, we investigated laser powder bed fusion, an additive manufacturing technique that is also known as selective laser melting. We performed selective laser melting on bismuth telluride, a common thermoelectric material. This work explored Bi₂Se_0.3 Te_2.7, an n-type thermoelectric material. After laser processing, the meso-, micro-, and nanostructure of selectively laser melted samples were analyzed to identify the relationship between the laser parameters and processed materials. The meso- and micro-structure was investigated with optical and scanning electron microscopy to identify the grain structure and morphology. The nanostructure was analyzed using transmission electron microscopy to explore the location and density of dislocations and point defects. The results reveal the impact of selective laser melting process parameters on n-type bismuth telluride and guide future work in determining the process-structure relationship for laser additive manufacturing of thermoelectric devices.

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