Imaging and characterization of aerosol-deposited TNT nanoparticles: a near-field optical microscopy study

Lewis Mortimer Gomez; Alberto Santana; Samuel P. Hernandez-Rivera; Miguel E. Castro

doi:10.1117/12.542855

21 September 2004 Imaging and characterization of aerosol-deposited TNT nanoparticles: a near-field optical microscopy study

Lewis Mortimer Gomez, Alberto Santana, Samuel P. Hernandez-Rivera, Miguel E. Castro

Author Affiliations +

Proceedings Volume 5415, Detection and Remediation Technologies for Mines and Minelike Targets IX; (2004) https://doi.org/10.1117/12.542855
Event: Defense and Security, 2004, Orlando, Florida, United States

Abstract

Trace detection of energetic materials has turned into a continuously growing field of interest for environmental and security reasons. The spectroscopic and imaging characterization of these materials at trace level play a major role in the development of sensing devices that enable their detection. In this work, the synthesis and imaging characterization of TNT particles over glass and gold substrates is performed. TNT solution in HPLC grade solvent was utilized as an aerosol jet coupled to a crossed beam of nitrogen gas to dry the aerosol during the path to the glass surface. Two different temperatures were set for the drier gas, 293 and 328 K. Atomic force microscopy (AFM), near field optical microscopy (NSOM), and scanning electron microscopy (SEM) reveal that a hot aerosol jet of TNT produced the smaller particles of these materials. TNT deposits resemble liquid like droplets with an ellipsoidal shape. TNT droplets prepared at room temperature and 320 K were (1736 ± 600) and (1379 ± 503)nm in diameter, respectively. The spectroscopic measurements revealed that nanosized formations correspond with TNT signature.

Citation Download Citation

Lewis Mortimer Gomez, Alberto Santana, Samuel P. Hernandez-Rivera, and Miguel E. Castro "Imaging and characterization of aerosol-deposited TNT nanoparticles: a near-field optical microscopy study", Proc. SPIE 5415, Detection and Remediation Technologies for Mines and Minelike Targets IX, (21 September 2004); https://doi.org/10.1117/12.542855

ACCESS THE FULL ARTICLE

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