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Nanomaterials, Volume 7, Issue 6

June 2017 - 33 articles

Cover Story: The combination of piezoelectric and polymer materials is an effective way to make the piezoelectric nanogenerator (PENG) possess both the polymer’s optimal flexibility and the ferroelectric material’s high piezoelectric coefficient. The volume ratio of ferroelectric material in the composite is an important factor that determines the PENG’s output performance. However, a systematic theoretical study about this phenomenon is lacking in the literature. In this paper, we studied the output voltage of the BaTiO3/polydimethylsiloxane (PDMS) composite PENG with different volume ratios of evenly distributed BaTiO3 cubes, and found the optimal volume ratio (46%) of the BaTiO3 cubes. At this ratio, the PENG can output the highest voltage, resulting in a trade-off between the surface charge and capacitance of the composite PENG. These results are of practical importance to optimize PENG’s performance. View the paper
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Articles (33)

  • Article
  • Open Access
31 Citations
8,263 Views
11 Pages

This work reports on the synthesis of rare earth-doped Li4Ti5O12 nanosheets with high electrochemical performance as anode material both in Li half and Li4Ti5O12/LiFePO4 full cell batteries. Through the combination of decreasing the particle size and...

  • Article
  • Open Access
43 Citations
7,533 Views
11 Pages

Antioxidant Potential and Antibacterial Efficiency of Caffeic Acid-Functionalized ZnO Nanoparticles

  • Kyong-Hoon Choi,
  • Ki Chang Nam,
  • Sang-Yoon Lee,
  • Guangsup Cho,
  • Jin-Seung Jung,
  • Ho-Joong Kim and
  • Bong Joo Park

We report a novel zinc oxide (ZnO) nanoparticle with antioxidant properties, prepared by immobilizing the antioxidant 3-(3,4-dihydroxyphenyl)-2-propenoic acid (caffeic acid, CA) on the surfaces of micro-dielectric barrier discharge (DBD) plasma-treat...

  • Feature Paper
  • Article
  • Open Access
27 Citations
11,524 Views
15 Pages

A Recyclable Cu-MOF-74 Catalyst for the Ligand-Free O-Arylation Reaction of 4-Nitrobenzaldehyde and Phenol

  • Pedro Leo,
  • Gisela Orcajo,
  • David Briones,
  • Guillermo Calleja,
  • Manuel Sánchez-Sánchez and
  • Fernando Martínez

The activity and recyclability of Cu-MOF-74 as a catalyst was studied for the ligand-free C–O cross-coupling reaction of 4-nitrobenzaldehyde (NB) with phenol (Ph) to form 4-formyldiphenyl ether (FDE). Cu-MOF-74 is characterized by having unsaturated...

  • Feature Paper
  • Article
  • Open Access
6 Citations
5,665 Views
12 Pages

ZnO Nano-Rod Devices for Intradermal Delivery and Immunization

  • Tapas R. Nayak,
  • Hao Wang,
  • Aakansha Pant,
  • Minrui Zheng,
  • Hans Junginger,
  • Wei Jiang Goh,
  • Choon Keong Lee,
  • Shui Zou,
  • Sylvie Alonso and
  • Bertrand Czarny
  • + 4 authors

Intradermal delivery of antigens for vaccination is a very attractive approach since the skin provides a rich network of antigen presenting cells, which aid in stimulating an immune response. Numerous intradermal techniques have been developed to enh...

  • Article
  • Open Access
10 Citations
6,044 Views
11 Pages

Highly Sensitive Magnetic-SERS Dual-Function Silica Nanoprobes for Effective On-Site Organic Chemical Detection

  • Cheolhwan Jeong,
  • Hyung-Mo Kim,
  • So Yeon Park,
  • Myeong Geun Cha,
  • Sung-Jun Park,
  • San Kyeong,
  • Xuan-Hung Pham,
  • Eunil Hahm,
  • Yuna Ha and
  • Dae Hong Jeong
  • + 2 authors

We report magnetic silver nanoshells (M-AgNSs) that have both magnetic and SERS properties for SERS-based detection. The M-AgNSs are composed of hundreds of Fe3O4 nanoparticles for rapid accumulation and bumpy silver shell for sensitive SERS detectio...

  • Article
  • Open Access
10 Citations
5,063 Views
18 Pages

The effect of depositing a collagen (CG)-poly-ε-caprolactone (PCL) nanofiber mesh (NFM) at the microgrooves of titanium (Ti) on the mechanical stability and osseointegration of the implant with bone was investigated using a rabbit model. Three groups...

  • Article
  • Open Access
20 Citations
5,851 Views
13 Pages

Optimized Photodynamic Therapy with Multifunctional Cobalt Magnetic Nanoparticles

  • Kyong-Hoon Choi,
  • Ki Chang Nam,
  • Un-Ho Kim,
  • Guangsup Cho,
  • Jin-Seung Jung and
  • Bong Joo Park

Photodynamic therapy (PDT) has been adopted as a minimally invasive approach for the localized treatment of superficial tumors, representing an improvement in the care of cancer patients. To improve the efficacy of PDT, it is important to first selec...

  • Article
  • Open Access
7 Citations
5,249 Views
8 Pages

The combination of the piezoelectric materials and polymer is an effective way to make the piezoelectric nanogenerator (PENG) possess both the polymer’s good flexibility and ferroelectric material’s high piezoelectric coefficient. The volume ratio of...

  • Article
  • Open Access
14 Citations
4,964 Views
13 Pages

Structural Inheritance and Redox Performance of Nanoporous Electrodes from Nanocrystalline Fe85.2B10-14P0-4Cu0.8 Alloys

  • Chaoqun Fu,
  • Lijun Xu,
  • Zhenhua Dan,
  • Akihiro Makino,
  • Nobuyoshi Hara,
  • Fengxiang Qin and
  • Hui Chang

Nanoporous electrodes have been fabricated by selectively dissolving the less noble α-Fe crystalline phase from nanocrystalline Fe85.2B14–xPxCu0.8 alloys (x= 0, 2, 4 at.%). The preferential dissolution is triggered by the weaker electrochemical stabi...

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Nanomaterials - ISSN 2079-4991