Laser Terahertz Emission Microscopy of Gold Nanorods forming a Coffee-stain Ring on a Semiconductor Surface

M. T. Munshi; P. Klarskov

doi:10.1109/IRMMW-THz50926.2021.9566850

Laser Terahertz Emission Microscopy of Gold Nanorods forming a Coffee-stain Ring on a Semiconductor Surface

M. T. Munshi, P. Klarskov

Institut for Elektro- og Computerteknologi - Electronics and Photonics

Publikation: Bidrag til bog/antologi/rapport/proceeding › Konferencebidrag i proceedings › Forskning › peer review

3 Citationer (Scopus)

Abstract

We study the influence of resonant gold nanorod deposited on an InAs surface to enhance the terahertz (THz) emission induced by the photo-Dember effect. With the nanorods forming a coffee-stain ring, we observe a variation in the induced THz field, which we image with Laser THz Emission Microscopy (LTEM). Here, we observe an enhancement of up to 30% of the THz signal measured from a bare InAs surface. On the other hand, clustering of nanorods in the central region leads to a suppression of THz signal where less than 80% of the signal measured from the bare surface is obtained. By preparing several samples with the same method but varying the number of nanorods, we are able to study the correlation between the nanorod concentration and the THz signal enhancement.

Originalsprog	Engelsk
Titel	2021 46th International Conference on Infrared, Millimeter, and Terahertz Waves, IRMMW-THz 2021
Antal sider	2
Forlag	IEEE
Publikationsdato	2021
ISBN (Elektronisk)	978-1-7281-9424-0
DOI	https://doi.org/10.1109/IRMMW-THz50926.2021.9566850
Status	Udgivet - 2021
Begivenhed	International Conference on Infrared, Millimeter and Terahertz Waves - Varighed: 29 aug. 2021 → … Konferencens nummer: 46th

Konference

Konference	International Conference on Infrared, Millimeter and Terahertz Waves
Nummer	46th
Periode	29/08/2021 → …

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@inproceedings{4d63063235c549b8bdeb491a9bba723f,

title = "Laser Terahertz Emission Microscopy of Gold Nanorods forming a Coffee-stain Ring on a Semiconductor Surface",

abstract = "We study the influence of resonant gold nanorod deposited on an InAs surface to enhance the terahertz (THz) emission induced by the photo-Dember effect. With the nanorods forming a coffee-stain ring, we observe a variation in the induced THz field, which we image with Laser THz Emission Microscopy (LTEM). Here, we observe an enhancement of up to 30% of the THz signal measured from a bare InAs surface. On the other hand, clustering of nanorods in the central region leads to a suppression of THz signal where less than 80% of the signal measured from the bare surface is obtained. By preparing several samples with the same method but varying the number of nanorods, we are able to study the correlation between the nanorod concentration and the THz signal enhancement.",

author = "Munshi, {M. T.} and P. Klarskov",

year = "2021",

doi = "10.1109/IRMMW-THz50926.2021.9566850",

language = "English",

booktitle = "2021 46th International Conference on Infrared, Millimeter, and Terahertz Waves, IRMMW-THz 2021",

publisher = "IEEE",

note = "International Conference on Infrared, Millimeter and Terahertz Waves , IRMMW-THz ; Conference date: 29-08-2021",

}

Munshi, MT & Klarskov, P 2021, Laser Terahertz Emission Microscopy of Gold Nanorods forming a Coffee-stain Ring on a Semiconductor Surface. i 2021 46th International Conference on Infrared, Millimeter, and Terahertz Waves, IRMMW-THz 2021. IEEE, International Conference on Infrared, Millimeter and Terahertz Waves , 29/08/2021. https://doi.org/10.1109/IRMMW-THz50926.2021.9566850

TY - GEN

T1 - Laser Terahertz Emission Microscopy of Gold Nanorods forming a Coffee-stain Ring on a Semiconductor Surface

AU - Munshi, M. T.

AU - Klarskov, P.

N1 - Conference code: 46th

PY - 2021

Y1 - 2021

N2 - We study the influence of resonant gold nanorod deposited on an InAs surface to enhance the terahertz (THz) emission induced by the photo-Dember effect. With the nanorods forming a coffee-stain ring, we observe a variation in the induced THz field, which we image with Laser THz Emission Microscopy (LTEM). Here, we observe an enhancement of up to 30% of the THz signal measured from a bare InAs surface. On the other hand, clustering of nanorods in the central region leads to a suppression of THz signal where less than 80% of the signal measured from the bare surface is obtained. By preparing several samples with the same method but varying the number of nanorods, we are able to study the correlation between the nanorod concentration and the THz signal enhancement.

AB - We study the influence of resonant gold nanorod deposited on an InAs surface to enhance the terahertz (THz) emission induced by the photo-Dember effect. With the nanorods forming a coffee-stain ring, we observe a variation in the induced THz field, which we image with Laser THz Emission Microscopy (LTEM). Here, we observe an enhancement of up to 30% of the THz signal measured from a bare InAs surface. On the other hand, clustering of nanorods in the central region leads to a suppression of THz signal where less than 80% of the signal measured from the bare surface is obtained. By preparing several samples with the same method but varying the number of nanorods, we are able to study the correlation between the nanorod concentration and the THz signal enhancement.

UR - http://www.scopus.com/inward/record.url?scp=85125339268&partnerID=8YFLogxK

U2 - 10.1109/IRMMW-THz50926.2021.9566850

DO - 10.1109/IRMMW-THz50926.2021.9566850

M3 - Article in proceedings

BT - 2021 46th International Conference on Infrared, Millimeter, and Terahertz Waves, IRMMW-THz 2021

PB - IEEE

T2 - International Conference on Infrared, Millimeter and Terahertz Waves

Y2 - 29 August 2021

ER -

Laser Terahertz Emission Microscopy of Gold Nanorods forming a Coffee-stain Ring on a Semiconductor Surface

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