Broadband enhanced fluorescence using zinc-oxide nanoflower arrays

Nonstoichiometric Zinc oxide (ZnO) nanorod arrays doped Co or Ni can be easily obtained by calicining soaked ZnO nanorod arrays. More importantly, the nonstoichiometric doped ZnO nanoarrays have more effective antimicrobial than pure ZnO nanoarrays, which means we can obtain a kind of promising new effective functional nanomaterials.

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Highly sensitive microfluidic detection of carcinoembryonic antigen via a synergetic fluorescence enhancement strategy based on the micro/nanostructure optimization of ZnO nanorod arrays and in situ ZIF-8 coating

Chemical Engineering Journal ◽

10.1016/j.cej.2019.123230 ◽

2020 ◽

Vol 383 ◽

pp. 123230 ◽

Cited By ~ 3

Author(s):

De Zhao ◽

Zhihua Wu ◽

Jian Yu ◽

Hongzhi Wang ◽

Yaogang Li ◽

...

Keyword(s):

Carcinoembryonic Antigen ◽

Fluorescence Enhancement ◽

Zno Nanorod ◽

Nanorod Arrays ◽

Zno Nanorod Arrays ◽

Highly Sensitive

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Antibacterial Application on Staphylococcus aureus Using Antibiotic Agent/Zinc Oxide Nanorod Arrays/Polyethylethylketone Composite Samples

Nanomaterials ◽

10.3390/nano9050713 ◽

2019 ◽

Vol 9 (5) ◽

pp. 713

Author(s):

Dave W. Chen ◽

Kuan-Yi Lee ◽

Min-Hua Tsai ◽

Tung-Yi Lin ◽

Chien-Hao Chen ◽

...

Keyword(s):

Staphylococcus Aureus ◽

Zinc Oxide ◽

Synthesis Method ◽

Antibacterial Properties ◽

Precursor Solution ◽

Zno Nanorod ◽

Nanorod Arrays ◽

Zno Nanorod Arrays ◽

Antibiotic Agent ◽

Buffer Solution

In this study, zinc oxide (ZnO) nanorod arrays as antibiotic agent carriers were grown on polyetheretherketone (PEEK) substrates using a chemical synthesis method. With the concentration of ammonium hydroxide in the precursor solution kept at 4 M, ZnO nanorod arrays with diameters in the range of 100–400 nm and a loading density of 1.7 mg/cm2 were grown onto the PEEK substrates. Their drug release profiles and the antibacterial properties of the antibiotic agent/ZnO/PEEK samples in the buffer solution were investigated. The results showed that the concentrations of antibiotic agents (ampicillin or vancomycin) released from the samples into the buffer solution were higher than the value of minimum inhibitory concentration of 90% for Staphylococcus aureus within the 96 h test. The bioactivities of ampicillin and vancomycin on substrates also showed around 40% and 80% on the Staphylococcus aureus, respectively. In the antibacterial activity test, sample with the suitable loading amount of antibiotic agent had a good inhibitory effect on the growth of Staphylococcus aureus.

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Homoepitaxial Nanostructures of Zinc Oxide

Journal of Nanomaterials ◽

10.1155/2015/872793 ◽

2015 ◽

Vol 2015 ◽

pp. 1-8

Author(s):

Tatiana V. Plakhova ◽

Andrey N. Baranov ◽

Alexander V. Knotko ◽

Gennady N. Panin

Keyword(s):

Zinc Oxide ◽

Fast Growth ◽

Luminescence Properties ◽

Zno Nanorod ◽

Zno Nanostructures ◽

Nanorod Arrays ◽

Zno Nanorod Arrays ◽

Homoepitaxial Growth ◽

Growth From Solution ◽

Growth From Vapor

The homoepitaxial ZnO nanostructures (HENS) were obtained on different substrates using various techniques. The first type of homoepitaxial ZnO nanorod arrays was grown on Si or ITO substrates by using two alternative sequences: (a) seeding→growth from solution→growth from vapor and contrariwise (b) seeding→growth from vapor→growth from solution. As follows from transport and cathode luminescence measurements homoepitaxial growth allows enhancing electrical or luminescence properties. The second type of HENS was prepared by growth of vertically or horizontally oriented ZnO nanorod arrays depending on monocrystalline ZnO wafers with[0001]and[10-10]orientation. In all cases the growth occurs along thec-axis of fast growth.

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Effects of Annealing Environments on the Solution-Grown, Aligned Aluminium-Doped Zinc Oxide Nanorod-Array-Based Ultraviolet Photoconductive Sensor

Journal of Nanomaterials ◽

10.1155/2012/189279 ◽

2012 ◽

Vol 2012 ◽

pp. 1-15 ◽

Cited By ~ 25

Author(s):

Mohamad Hafiz Mamat ◽

Mohd Izzudin Che Khalin ◽

Nik Noor Hafizah Nik Mohammad ◽

Zuraida Khusaimi ◽

Nor Diyana Md Sin ◽

...

Keyword(s):

Zinc Oxide ◽

Surface Condition ◽

Zno Nanorods ◽

Average Diameter ◽

Nanorod Array ◽

Zno Nanorod ◽

Nanorod Arrays ◽

Zno Nanorod Arrays ◽

High Concentration ◽

Doped Zno

We have fabricated metal-semiconductor-metal- (MSM-) type ultraviolet (UV) photoconductive sensors using aluminium- (Al-) doped zinc oxide (ZnO) nanorod arrays that were annealed in different environments: air, oxygen, or a vacuum. The Al-doped ZnO nanorods had an average diameter of 60 nm with a thickness of approximately 600 nm that included the seed layer (with thickness~200 nm). Our results show that the vacuum-annealed nanorod-array-based UV photoconductive sensor has the highest photocurrent value of 2.43 × 10-4 A. The high photocurrent is due to the high concentration of zinc (Zn) interstitials in the vacuum-annealed nanorod arrays. In contrast, the oxygen-annealing process applied to the Al-doped ZnO nanorod arrays produced highly sensitive UV photoconductive sensors, in which the sensitivity reached 55.6, due to the surface properties of the oxygen-annealed nanorods, which have a higher affinity for oxygen adsorption than the other samples and were thereby capable of reducing the sensor’s dark current. In addition, the sensor fabricated using the oxygen-annealed nanorod arrays had the lowest rise and decay time constants. Our result shows that the annealing environment greatly affects the surface condition and properties of the Al-doped ZnO nanorod arrays, which influences the performance of the UV photoconductive sensors.

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Electrophoretic fabrication of silver nanostructure/zinc oxide nanorod heterogeneous arrays with excellent SERS performance

Journal of Materials Chemistry C ◽

10.1039/c4tc02677b ◽

2015 ◽

Vol 3 (8) ◽

pp. 1724-1731 ◽

Cited By ~ 8

Author(s):

Hui He ◽

Huoquan Li ◽

Weiwei Xia ◽

Xiaoshuang Shen ◽

Min Zhou ◽

...

Keyword(s):

Zinc Oxide ◽

Electrophoretic Deposition ◽

Zno Nanorod ◽

Nanorod Arrays ◽

Zno Nanorod Arrays ◽

Silver Nanostructure

Electrophoretic deposition (EPD) is used to fabricate Ag-decorated ZnO nanorod arrays with excellent SERS performance.

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Fabrication of Intrinsic Zinc Oxide-Coated, Aluminium-Doped Zinc Oxide Nanorod Array-Based Ultraviolet Photoconductive Sensors

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.773-774.696 ◽

2015 ◽

Vol 773-774 ◽

pp. 696-700

Author(s):

Mohamad Hafiz Mamat ◽

Mohd Firdaus Malek ◽

N.N. Hafizah ◽

Nor Diyana Md Sin ◽

I. Saurdi ◽

...

Keyword(s):

Zinc Oxide ◽

Sol Gel ◽

Rf Magnetron Sputtering ◽

Nanorod Array ◽

Zno Nanorod ◽

Nanorod Arrays ◽

Zno Nanorod Arrays ◽

Immersion Method ◽

Doped Zno ◽

And Performance

Fabrication and performance of metal-semiconductor-metal (MSM)–type intrinsic zinc oxide-coated, aluminium-doped ZnO nanorod array-based ultraviolet photoconductive sensors were reported and discussed. The Al-doped ZnO nanorod arrays were prepared using sonicated sol-gel immersion method. The coating process of intrinsic ZnO onto Al-doped ZnO nanorod arrays was performed using radio-frequency (RF) magnetron sputtering at different deposition times varying from 0 to 10 min. We observed that responsivity of the sensors decreased with increasing intrinsic ZnO deposition time, decreasing from 4.81 A/W without coating to 1.37 A/W after 10 min of coating. Interestingly, the sensitivity of the sensors improved with intrinsic ZnO coating, having a maximum value of 19.0 after 1 min coating.

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