Formation of bismuth oxide nanowires by simultaneous templating and electrochemical adhesion of DNA on Si/SiO2

Hale, Michael G.; Little, Ross; Salem, Mohamed; Hedley, John; Horrocks, Benjamin R.; Šiller, Lidija

doi:10.1016/j.tsf.2012.07.083

Cited by 11 publications

(5 citation statements)

References 41 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Here, α is the absorbance coefcient, is the beam energy, B is the proportion constant, and Eg refers to energy gaps. Regarding Bi 2 O 3 flms, n equals 2 for direct allowed transition [65][66][67] Te exact mechanism by which the bandgap decreases during annealing can depend on the specifc material and the annealing conditions, such as the annealing temperature and duration. However, it is essential to note that the relationship between band gap and grain size is only sometimes straightforward and can depend on several factors, including the specifc material and the processing conditions used.…”

Section: Resultsmentioning

confidence: 99%

The Role of Annealing Treatment on Crystallographic, Optical, and Electrical Features of Bi2O3 Thin Films Prepared Using Reactive Plasma Sputtering Technology

Beden,

Dumboos,

Ismael

et al. 2023

Journal of Nanotechnology

View full text Add to dashboard Cite

Bismuth oxide (Bi2O3) has attracted considerable research interest in test thin films made utilizing the reactive plasma sputtering (RPS) technology-assisted annealing treatment, allowing the development of diverse BixOx thin films. SEM, phase X-ray diffraction patterns, UV-Vis spectrometers, and D.C. two-probes are used to identify the crystallographic structure and assess the films’ optical-electrical properties. The XRD examination showed that forming Bi2O3 films with an amorphous to multiphase crystalline structure for sputtering time of 40 min was due to soda glass substrate temperature at a range of 30–35°C. Thin films of Bi2O3 crystal structures improved with annealing heat treatment at 200, 300, 400, and 500°C. Yet the formation of crystalline phase (β-Bi2O3 with δ-Bi2O3) Bi2O3 nanostructures occurred at higher temperatures. SEM images showed transparent particles highly affected by annealing temperatures. The nanostructures were about 102–510 nm long, and the diameter was 50–100 nm. The Bi2O3 film optical band gaps and nanostructures ranged from 2.75 to 3.05 eV. The annealing temperature differences affected the crystallite sizes, optical band gaps, and surface roughness. The findings showed that these differences caused the phase transition in Bi2O3 structures. The electrical calculation revealed that the electrical conductivity improved with annealing temperatures of 150–250°C while declining with temperature (300–500)°C with typical semiconductor films.

show abstract

Section: Resultsmentioning

confidence: 99%

The Role of Annealing Treatment on Crystallographic, Optical, and Electrical Features of Bi2O3 Thin Films Prepared Using Reactive Plasma Sputtering Technology

Beden,

Dumboos,

Ismael

et al. 2023

Journal of Nanotechnology

View full text Add to dashboard Cite

show abstract

“…In the case of DNA, its predictable interactions, high recognition capabilities, wellstructured geometry and spatial conformation, small size, easy and cheap synthesis of almost any sequence and the fact that can be functionalized using simple covalent attachment methods make it an outstanding and versatile option. 125 DNA self-assembly has been used to direct the organization of nanowires, [126][127][128] nanorods, 129 fullerenes arrays 130 and even arrays of other biomolecules making possible artificial enzymatic cascades. 131?…”

Section: Self-assembling Structuresmentioning

confidence: 99%

“…And their structural folding, stability and versatility can be adjusted changing the amino sequence or the functional groups of the amino acids. [124][125][126][127][128][129][130][131][132][133] These characteristics give them great scientific and industrial relevance. Vesicles, micelles, mono and bilayers, fibers, tubes, ribbons, hydrogels and arrays are just some of the structures obtained so far using self-assembling peptides.…”

Section: Self-assembling Structuresmentioning

confidence: 99%

“…138 On the other hand, several other self-assembly viral, yeast proteins and artificial proteins have been studied, including the use of cysteine rich peptides to form thin films layer by layer. [124][125][126][127][128][129][130][131][132][133][134][135][136][137][138][139] By understanding these mechanisms, it is possible to develop custom-made self-assembly peptides using a chemical synbio approach. Using computational tools to understand those mechanisms have proven fruitful as demonstrated by Matthes, Gapsys and deGroot.…”

Section: Alvarado and Vega Baudritmentioning

confidence: 99%

See 1 more Smart Citation

Bioinspired Engineering at Nanoscale: Integration of Synthetic Biology and Bionanotechnology

Meza¹,

Baudrit²

2013

j bionanosci

View full text Add to dashboard Cite

For several thousand millions of years nature has been crafting extremely intricate systems at nanoscale. With current technologies our range of action has passed from merely mimicking nature to redesign it. This work presents a novel perspective of the convergence of two young and promising fields: bionanotechnology (bionano) and synthetic biology (synbio). We explore the major advances made by the fusion of these fields in several areas including amino and nucleic acid based nanostructures. In this regard, we briefly discuss their application in gene regulation mechanisms (such as engineered riboswitches), self-assembly structures (taking advantage of bacterial S-layer, viral proteins and DNA origami), biological nanopores (whose properties can used as sensors, nucleic acid sequencers, nutrient intake and secretion devices, etc.) and molecular motors (allowing translocation of materials or movement of the entire system). Furthermore, the design of novel synthetic biopolymers (RNA, DNA and proteins), minimal cell approaches and cell-free systems technologies are also discussed under the perception of synbio/bionano. This led to the possibility of designing advanced engineered systems (micro/nano-biomachines) with desired feaapplications of this technology we also should be aware of ethical problems that may arise.

show abstract

“…One such instance was reported by Shi et al 19 in which starch molecules were used to direct the growth of an electrodeposited conducting polymer. Duplex DNA has been shown to be highly effective for promoting the anisotropic growth of a variety of materials such as organic conducting polymers, [20][21][22][23][24][25] metals, [26][27][28][29][30][31][32][33] metal oxides, [34][35][36][37] semiconducting chalcogenides, 38,39 and superconducting alloys. 40 However, to our knowledge there have been no prior reports of conducting nanostructures formed by electrochemical DNAtemplating methods.…”

Section: Introductionmentioning

confidence: 99%

Electrically conductive magnetic nanowires using an electrochemical DNA-templating route

et al. 2013

Self Cite

View full text Add to dashboard Cite

The fabrication of electrically conducting magnetic nanowires has been achieved using electrochemical DNA-templating of iron. In this approach, binding of the Fe(2+) cations to the DNA "template" molecules has been utilised to promote growth along the molecular axis. Formation of Fe within the product material was verified by XRD and XPS studies, which confirmed an iron/oxide "core-shell" structure. The effectiveness of the DNA duplex to direct the metal growth in one dimension was highlighted by AFM which reveals the product material to comprise high aspect ratio nanostructured architectures. These "nanowires" were observed to have morphologies consisting of densely packed linear arrangements of metal particles along the template, with wire diameters up to 26 nm. The structures were confirmed to be electrically conductive, as expected for such Fe-based materials, and to display superparamagnetic behaviour, consistent with the small size and particulate nature of the nanowires.

show abstract

Formation of bismuth oxide nanowires by simultaneous templating and electrochemical adhesion of DNA on Si/SiO2

Cited by 11 publications

References 41 publications

The Role of Annealing Treatment on Crystallographic, Optical, and Electrical Features of Bi2O3 Thin Films Prepared Using Reactive Plasma Sputtering Technology

The Role of Annealing Treatment on Crystallographic, Optical, and Electrical Features of Bi2O3 Thin Films Prepared Using Reactive Plasma Sputtering Technology

Bioinspired Engineering at Nanoscale: Integration of Synthetic Biology and Bionanotechnology

Electrically conductive magnetic nanowires using an electrochemical DNA-templating route

Contact Info

Product

Resources

About