Optical Nanoparticle Sorting Elucidates Synthesis of Plasmonic Nanotriangles

ACS Nano
María Ana HuergoJochen Feldmann

Abstract

We investigate the optical and morphological properties of gold nanoparticles grown by reducing a gold salt with Na2S. Lasers are tuned to the observed plasmon resonances, and the optical forces exerted on the nanoparticles are used to selectively print individual nanoparticles onto a substrate. This enables us to combine dark-field spectroscopy and scanning electron microscopy to compare the optical properties of single nanoparticles with their morphology. By arresting the synthesis at different times, we are able to investigate which type of nanoparticle is responsible for the respective resonances. We find that thin Au nanotriangles are the source of the observed near infrared (NIR) resonance. The initial lateral growth of these triangles causes the plasmon resonance to redshift into the NIR, whereas a subsequent thickening of the triangles and a concomitant truncation lead to a blueshift of the resonance. Furthermore, we find that the nanotriangles produced have extremely narrow line widths (187 ± 23 meV), show nearly isotropic scattering, and are stable for long periods of time. This shows their vast potential for applications such as in vivo imaging and bio(chemical) sensing. The method used here is generally applicable t...Continue Reading

References

Oct 15, 1994·Physical Review. B, Condensed Matter·H S ZhouJ W Haus
Nov 1, 1990·Physical Review. B, Condensed Matter·T CastroR P Andres
Sep 16, 2000·Physical Review Letters·N CombeA Pimpinelli
Apr 14, 2005·Nano Letters·Jin Z ZhangTony van Buuren
Oct 26, 2005·Journal of Nanoscience and Nanotechnology·S Shiv ShankarMurali Sastry
Jan 6, 2006·The Journal of Chemical Physics·Kevin L ShufordGeorge C Schatz
Feb 17, 2006·Physical Chemistry Chemical Physics : PCCP·Hristina PetrovaPaul Mulvaney
Feb 7, 2007·Langmuir : the ACS Journal of Surfaces and Colloids·Xuchuan JiangAibing Yu
Apr 7, 2007·Chemistry of Materials : a Publication of the American Chemical Society·Daniel A Zweifel, Alexander Wei
Sep 3, 2008·Chemical Society Reviews·Viktor MyroshnychenkoF Javier García de Abajo
Dec 24, 2008·Optics Express·K R Catchpole, A Polman
Jul 10, 2009·Chemical Society Reviews·Elodie Boisselier, Didier Astruc
Oct 21, 2010·Nano Letters·Alexander S UrbanJochen Feldmann
Apr 15, 2011·ACS Nano·Alexander S UrbanJochen Feldmann
May 10, 2011·Science·Mark W KnightNaomi J Halas
Oct 14, 2011·Nano Letters·Spas NedevJochen Feldmann
Feb 3, 2012·Chemical Reviews·Krishnendu SahaVincent M Rotello
Mar 28, 2012·Nano Letters·M PloschnerK Dholakia
Mar 5, 2013·Nano Letters·Mark W KnightNaomi J Halas
Mar 19, 2013·Nature Materials·Sviatlana ViarbitskayaErik Dujardin
Jun 25, 2014·Nano Letters·Nathaniel J HoganNaomi J Halas
Jul 23, 2014·Journal of Controlled Release : Official Journal of the Controlled Release Society·Ciceron Ayala-OrozcoAmit Joshi
Dec 17, 2014·Nano Letters·Miao LiJochen Feldmann
Jun 7, 2012·The Journal of Physical Chemistry Letters·Emilie RingeLaurence D Marks
Jan 9, 2016·Nano Letters·Julián GargiuloFernando D Stefani

❮ Previous
Next ❯

Citations

Sep 7, 2016·Nano Letters·Anastasia BabyninaTheobald Lohmüller
Sep 21, 2016·Nano Letters·Ianina L VioliFernando D Stefani
Jun 20, 2017·Langmuir : the ACS Journal of Surfaces and Colloids·M A HuergoC Vericat
May 12, 2018·Physical Chemistry Chemical Physics : PCCP·Marcelo AssisElson Longo
Mar 1, 2019·Physical Chemistry Chemical Physics : PCCP·Lemos P SLongo E
Aug 23, 2019·Nanoscale·Pilar Carro, Roberto C Salvarezza
Nov 6, 2018·Micromachines·Jianhua ZhangJianguo Guan
Oct 3, 2019·Advanced Materials·Heyou ZhangPaul Mulvaney
Aug 31, 2017·ACS Nano·Julián GargiuloFernando D Stefani
Mar 3, 2018·ACS Applied Materials & Interfaces·Christian KuttnerRafael Contreras-Cáceres
May 10, 2020·Langmuir : the ACS Journal of Surfaces and Colloids·Souvik Ghosh, Ambarish Ghosh

❮ Previous
Next ❯

Related Concepts

Trending Feeds

COVID-19

Coronaviruses encompass a large family of viruses that cause the common cold as well as more serious diseases, such as the ongoing outbreak of coronavirus disease 2019 (COVID-19; formally known as 2019-nCoV). Coronaviruses can spread from animals to humans; symptoms include fever, cough, shortness of breath, and breathing difficulties; in more severe cases, infection can lead to death. This feed covers recent research on COVID-19.

Blastomycosis

Blastomycosis fungal infections spread through inhaling Blastomyces dermatitidis spores. Discover the latest research on blastomycosis fungal infections here.

Nuclear Pore Complex in ALS/FTD

Alterations in nucleocytoplasmic transport, controlled by the nuclear pore complex, may be involved in the pathomechanism underlying multiple neurodegenerative diseases including Amyotrophic Lateral Sclerosis and Frontotemporal Dementia. Here is the latest research on the nuclear pore complex in ALS and FTD.

Applications of Molecular Barcoding

The concept of molecular barcoding is that each original DNA or RNA molecule is attached to a unique sequence barcode. Sequence reads having different barcodes represent different original molecules, while sequence reads having the same barcode are results of PCR duplication from one original molecule. Discover the latest research on molecular barcoding here.

Chronic Fatigue Syndrome

Chronic fatigue syndrome is a disease characterized by unexplained disabling fatigue; the pathology of which is incompletely understood. Discover the latest research on chronic fatigue syndrome here.

Evolution of Pluripotency

Pluripotency refers to the ability of a cell to develop into three primary germ cell layers of the embryo. This feed focuses on the mechanisms that underlie the evolution of pluripotency. Here is the latest research.

Position Effect Variegation

Position Effect Variagation occurs when a gene is inactivated due to its positioning near heterochromatic regions within a chromosome. Discover the latest research on Position Effect Variagation here.

STING Receptor Agonists

Stimulator of IFN genes (STING) are a group of transmembrane proteins that are involved in the induction of type I interferon that is important in the innate immune response. The stimulation of STING has been an active area of research in the treatment of cancer and infectious diseases. Here is the latest research on STING receptor agonists.

Microbicide

Microbicides are products that can be applied to vaginal or rectal mucosal surfaces with the goal of preventing, or at least significantly reducing, the transmission of sexually transmitted infections. Here is the latest research on microbicides.