Recent trends on nanocomposites based on Cu, Ag and Au clusters: A closer look

Armelao, Lidia; Barreca, Davide; Bottaro, Gregorio; Gasparotto, Alberto; Gross, Silvia; Maragno, Cinzia; Tondello, Eugenio

doi:10.1016/j.ccr.2005.12.003

Cited by 200 publications

(111 citation statements)

References 216 publications

Supporting

Mentioning

105

Contrasting

Unclassified

Order By: Relevance

“…Glass-metal nanocomposite materials have recently attracted considerable interest due to their novel chemical and physical properties such as non-linear optical, nanoplasmonic, and quantum size effects [1][2][3]. Nobel metals such as gold and silver are amongst the most promising and most widely studied metallic nanoparticles in glass, while copper is sometimes included in extended studies [3].…”

Section: Introductionmentioning

confidence: 99%

New insight into nanoparticle precipitation by electron beams in borosilicate glasses

Sabri

Möbus

2017

Appl. Phys. A

View full text Add to dashboard Cite

Nanoprecipitation in different oxide glasses by means of electron irradiation in transmission electron microscopy (TEM) has been compared in this study. Upon irradiation, groups or patterns of nanoparticles with various morphologies and sizes were formed in borosilicate glasses, loaded with zinc, copper, and silver. The study successfully includes loading ranges for the target metal from doping level (1%) over medium level (20%) to majority phase (60%). It is found that particle patterning resolution is affected by parallel processes of amorphous phase separation, glass ablation, and delocalised precipitation. In addition, via an in-situ study, it is confirmed that by heating alone without irradiation, no precipitate nanoparticles form.

show abstract

Section: Introductionmentioning

confidence: 99%

New insight into nanoparticle precipitation by electron beams in borosilicate glasses

Sabri

Möbus

2017

Appl. Phys. A

View full text Add to dashboard Cite

show abstract

“…26 The optical absorbance spectra of as-deposited Cu/γ-Fe 2 O 3 nanocomposite films with Cu concentrations of 0%, 4.6%, and 8.1%. are shown in Figure 9.…”

Section: Resultsmentioning

confidence: 99%

Phase-transformation in iron oxide and formation of Cu/γ-Fe2O3 nanocomposite using radio-frequency sputtering with metal chips on an α-Fe2O3 target

Abe

Watanabe

2017

AIP Advances

View full text Add to dashboard Cite

A simple technique that uses radio-frequency sputtering with a functional element on a hematite (α-Fe2O3) target is presented for the production of maghemite (γ-Fe2O3) thin films. These films are prepared on water-cooled glass substrates in an Ar atmosphere. Investigations are done with Ti, Si, Al, Cu, Mo, and Zn, with γ-Fe2O3 being obtained only in the presence of Cu, indicating that phase transition occurs only for this metal. Mössbauer spectra and magnetization analysis reveal that the quality of the obtained γ-Fe2O3 films is higher than that of the film produced using Mg, which was reported in our previous work. High-angle annular dark-field scanning tunneling electron microscopy and electron energy-loss spectroscopy reveal that the added Cu remains in a metallic state (without oxidization), forming a Cu/γ-Fe2O3 phase-mixture in the as-deposited film. The Cu/γ-Fe2O3 composite film exhibits negative magnetoresistance (MR), with a MR ratio of approximately 0.6% at room temperature in an applied field of 10 kOe, and a negative Faraday rotation of −5708 deg cm−1 at 830 nm.

show abstract

“…On the other hand, the graphite shells are outstanding microwave absorption materials due to their dielectric properties, which play an important role in improving the disperse properties of nanocapsules 9,10 . Actually, Cu nanoparticles possess many good properties such as electric, optical, thermal and lubricating, etc [11][12][13][14][15] . A broad arena in engineering applications is also attributed to these particles and is attracting an increasing number of scientists.Carbon-coated Cu nanocapsules for sensor applications had been produced using a modified flame spray synthesis unit under highly reducing conditions 13 .…”

Section: Introductionmentioning

confidence: 99%

Synthesis, characterization and microwave absorption of carbon-coated Cu nanocapsules

Sun

Liu

et al. 2014

Mat. Res.

View full text Add to dashboard Cite

The microstructure and microwave absorption of carbon-coated Cu nanocapsules have been investigated. Carbon-coated Cu nanocapsules have been synthesized by an arc-discharge method. The paraffin-Cu/C nanocapsules composite shows excellent electromagnetic (EM) absorption properties. An optimal reflection loss (RL) value of -40.0 dB is reached at 10.52 GHz for a layer 1.9 mm thickness. RL exceeding -20 dB can be realized in any interval within the 1-18 GHz range by choosing an appropriate thickness of the absorbent layer between 1.1 and 10.0 mm. Theoretical simulation for the microwave absorption using the transmission line theory agrees reasonably well with the experimental results. The EM-wave absorption properties of nanocapsules materials are illustrated by means of an absorption-tube-map. The carbon-coated Cu nanocapsule is an attractive candidate for EM-wave absorption, which significantly enriches the family of EM-wave nanoabsorbents.

show abstract

Recent trends on nanocomposites based on Cu, Ag and Au clusters: A closer look

Cited by 200 publications

References 216 publications

New insight into nanoparticle precipitation by electron beams in borosilicate glasses

New insight into nanoparticle precipitation by electron beams in borosilicate glasses

Phase-transformation in iron oxide and formation of Cu/γ-Fe2O3 nanocomposite using radio-frequency sputtering with metal chips on an α-Fe2O3 target

Synthesis, characterization and microwave absorption of carbon-coated Cu nanocapsules

Contact Info

Product

Resources

About