Unusual behavior in magnesium-copper cluster matter produced by helium droplet mediated deposition

The Journal of Chemical Physics
Samuel B EmeryC Michael Lindsay

Abstract

We demonstrate the ability to produce core-shell nanoclusters of materials that typically undergo intermetallic reactions using helium droplet mediated deposition. Composite structures of magnesium and copper were produced by sequential condensation of metal vapors inside the 0.4 K helium droplet baths and then gently deposited onto a substrate for analysis. Upon deposition, the individual clusters, with diameters ∼5 nm, form a cluster material which was subsequently characterized using scanning and transmission electron microscopies. Results of this analysis reveal the following about the deposited cluster material: it is in the un-alloyed chemical state, it maintains a stable core-shell 5 nm structure at sub-monolayer quantities, and it aggregates into unreacted structures of ∼75 nm during further deposition. Surprisingly, high angle annular dark field scanning transmission electron microscopy images revealed that the copper appears to displace the magnesium at the core of the composite cluster despite magnesium being the initially condensed species within the droplet. This phenomenon was studied further using preliminary density functional theory which revealed that copper atoms, when added sequentially to magnesium clusters...Continue Reading

References

Sep 15, 1988·Physical Review A: General Physics·A D Becke
Dec 15, 1996·Physical Review. B, Condensed Matter·J P PerdewY Wang
Sep 11, 2007·The Journal of Chemical Physics·Vadim MozhayskiyAndrey F Vilesov
Mar 31, 2009·Chemistry, an Asian Journal·Suresh Babu Kalidindi, Balaji R Jagirdar
Apr 14, 2011·The Journal of Physical Chemistry. a·Evgeny LoginovAndrey F Vilesov
May 17, 2012·Physical Review Letters·Luis F GomezAndrey F Vilesov
Aug 10, 2013·The Journal of Chemical Physics·Samuel B EmeryC Michael Lindsay
Sep 11, 2013·Faraday Discussions·Adrian BoatwrightShengfu Yang
Mar 13, 2014·Physical Chemistry Chemical Physics : PCCP·Daniel SpenceShengfu Yang
Jun 13, 2014·The Journal of Physical Chemistry Letters·Jie ZhangWei Kong
Feb 12, 2015·The Journal of Chemical Physics·Philipp ThalerWolfgang E Ernst

❮ Previous
Next ❯

Citations

Jul 3, 2016·The Journal of Chemical Physics·María Pilar de Lara-CastellsElena Voloshina
Jun 9, 2019·Annual Review of Physical Chemistry·Oliver Gessner, Andrey F Vilesov
May 17, 2021·Mass Spectrometry Reviews·Simon AlbertiniPaul Scheier
Jul 21, 2017·The Journal of Physical Chemistry. a·Evgeny LoginovAndrey F Vilesov
Dec 10, 2016·The Journal of Physical Chemistry. a·Robert J BuszekJerry A Boatz

❮ 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.