Reshaping the phonon energy landscape of nanocrystals inside a terahertz plasmonic nanocavity

Nature Communications
Xin JinLuca Razzari

Abstract

Phonons (quanta of collective vibrations) are a major source of energy dissipation and drive some of the most relevant properties of materials. In nanotechnology, phonons severely affect light emission and charge transport of nanodevices. While the phonon response is conventionally considered an inherent property of a nanomaterial, here we show that the dipole-active phonon resonance of semiconducting (CdS) nanocrystals can be drastically reshaped inside a terahertz plasmonic nanocavity, via the phonon strong coupling with the cavity vacuum electric field. Such quantum zero-point field can indeed reach extreme values in a plasmonic nanocavity, thanks to a mode volume well below λ3/107. Through Raman measurements, we find that the nanocrystals within a nanocavity exhibit two new "hybridized" phonon peaks, whose spectral separation increases with the number of nanocrystals. Our findings open exciting perspectives for engineering the optical phonon response of functional nanomaterials and for implementing a novel platform for nanoscale quantum optomechanics.

References

Dec 16, 2003·Proceedings of the National Academy of Sciences of the United States of America·Hui DengYoshihisa Yamamoto
Sep 29, 2006·Nature·J KasprzakLe Si Dang
May 8, 2009·Nature Nanotechnology·Mathias SteinerPhaedon Avouris
Dec 5, 2009·Chemical Reviews·Dmitri V TalapinElena V Shevchenko
Dec 10, 2009·Optics Express·Andreas BitzerMarkus Walther
Apr 6, 2011·Nano Letters·D J SheltonG D Boreman
Mar 14, 2013·Optics Express·Renaud MartySudhiranjan Tripathy
Nov 28, 2013·Nano Letters·A I VäkeväinenP Törmä
Feb 19, 2014·Nature Communications·Mark L KerfootMichael Scheibner
Dec 24, 2014·Reports on Progress in Physics·P Törmä, W L Barnes
Jan 15, 2015·Nature Communications·A ShalabneyT W Ebbesen
Mar 5, 2015·Proceedings of the National Academy of Sciences of the United States of America·Gershon KurizkiJörg Schmiedmayer
Jun 4, 2015·Angewandte Chemie·Atef ShalabneyThomas W Ebbesen
Aug 8, 2015·Nature Communications·Artem A BakulinDavid Cahen
Aug 12, 2015·The Journal of Physical Chemistry Letters·Jino GeorgeThomas W Ebbesen
Mar 10, 2016·Nature·Deniz BozyigitVanessa Wood
Jun 15, 2016·Nature·Rohit ChikkaraddyJeremy J Baumberg
Oct 1, 2016·The Journal of Physical Chemistry Letters·Robrecht M A VergauweThomas W Ebbesen

❮ Previous
Next ❯

Citations

Dec 18, 2018·Journal of Physics. Condensed Matter : an Institute of Physics Journal·Changji LiuXinlong Xu

❮ 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.