Biomimicry of multifunctional nanostructures in the neck feathers of mallard (Anas platyrhynchos L.) drakes

Cataloged from PDF version of article.Biological systems serve as fundamental sources of inspiration for the development of artificially colored devices, and their investigation provides a great number of photonic design opportunities. While several successful biomimetic designs have been detailed in the literature, conventional fabrication techniques nonetheless remain inferior to their natural counterparts in complexity, ease of production and material economy. Here, we investigate the iridescent neck feathers of Anas platyrhynchos drakes, show that they feature an unusual arrangement of two-dimensional (2D) photonic crystals and further exhibit a superhydrophobic surface, and mimic this multifunctional structure using a nanostructure composite fabricated by a recently developed top-down iterative size reduction method, which avoids the above-mentioned fabrication challenges, provides macroscale control and enhances hydrophobicity through the surface structure. Our 2D solid core photonic crystal fibres strongly resemble drake neck plumage in structure and fully polymeric material composition, and can be produced in wide array of colors by minor alterations during the size reduction process

Full Length Research Paper Improving the traditional sesame seed planting with seed pelleting

The aim of this study is to determine the effect of seed pelleting in a variety of sesame types on yield and yield factors. In this study, it is suggested that with the help of seed pelleting, it will be possible toachieve a better planting, and subsequently, to acquire an increase in the yield and its elements. In this research, Muganli-57, Ozberk-82 and Golmarmara type seeds were used, which are all officially registered and commonly used seed kinds in Turkey. Two types of planting were utilized: 1- the traditional planting method used worldwide, 2- alternative sensitive method. In the sensitive method, the pelleted sesame seeds treated with a special pelleting mixture had a diameter of 3 mm or larger.These pelleted sesame seeds were planted with a pneumatic spacing planter. This study was done in Adnan Menderes University, Agricultural Faculty, Research and Practice Centers located in MenderesPlain and in the field of the plant production center of Dalaman. The arable field trials were done in two locations with a split plot trial method with three replications. In this study, the height of the plants(cm), number of lateral branches (lateral branches plant-1), number of capsules per plant (capsule plant-1), height of first capsule (cm), number of plants harvested per square meter, yield (kg ha-1) and thousand kernel weight (g) were analyzed for both pelleted and nonpelleted sesame seeds. As a result, the pelleted sesame seeds improved the yield significantly compared to the normal sesame seeds. It was found that the pelleted sesame seeds had a mean yield value of 1976.3 kg ha-1, whereas the nonpelleted sesame seeds had a mean yield value of 1243.2 kg ha-1. Statistically significant differences exist between the pelleted and non-pelleted seeds in terms of the height of the plants (cm), number oflateral branches per plant (branch plant-1), number of capsules per plant (capsule plant-1), height of first capsule (cm), number of plants harvested (plant/ m2), yield values (kg ha-1) and thousand kernel weight (g)

Modified guidance laws for escaping a microburst with turbulence

Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/77343/1/AIAA-2000-4250-542.pd

The effects of seed coating treatment on yield and yield components in some cotton (Gossypium hirsitum L.) varieties

The use of delinted cotton seeds in cotton planting instead of fuzzy cotton seeds has spread recently. Cotton planting area of the world was 32,150,000 ha in 2003 - 2004. Approximately 45 - 50% of the planting seed in the world is delinted. This signifies that nearly 16,000,000 ha cotton area is planted by delinted cotton seed. In this study, coating fuzzy cotton seeds is proposed as an alternative to delintation. Coating makes fuzzy cotton seeds more suitable for the pneumatic spacing planter. Also, unlike delintation, sulphuric acid is not used for coating and this eliminates the problems associated with its usage such as seed loss, pollution and threats to human health. The results show that the cultivation of coated cotton seeds has no disadvantage regarding the agronomic and technological characteristics of cotton seed; coating may even improve the characteristics of the seeds. Also, no significant difference exists in terms of yield. Hence, seed coating has the potential to expand organic cultivation of cotton, as the coated seeds can be easily planted with pneumatic spacing drills and as organic seed procurement would be provided with the seed coating method.Keywords: Fuzzy cotton seed, seed coating, yield componentsAfrican Journal of BiotechnologyVol. 9(34), pp. 5523-5529, 23 August, 201

2D PbS Nanosheets Synthesis and Their Applications as Field Effect Transistors or Solar Cells

Two-dimensional, solution-processable semiconductor materials are interesting for low-cost electronic applications [1]. We demonstrate the synthesis of lead sulfide nanosheets and how their size, shape and height can be tuned by varying concentrations of pre-cursors, ligands and by varying the reaction temperature. Especially, the charge carrier confinement in the nanosheets' height adjustable from 2 to 20 nm has a decisive impact on their electronic properties. This is demonstrated by their use as conduction channel in a field effect transistor [2]. Recently we also showed that especially thin nanosheets show a high carrier multiplication (CM) efficiency [3] which could make them, through the confinement induced band gap and high photoconductivity, very attractive for application in photovoltaic devices. We are already able to manufacture photovoltaic devices out of single nanosheets which show promising results

2D PbS Nanosheets Synthesis and Their Applications as Field Effect Transistors or Solar Cells

Two-dimensional, solution-processable semiconductor materials are interesting for low-cost electronic applications [1]. We demonstrate the synthesis of lead sulfide nanosheets and how their size, shape and height can be tuned by varying concentrations of pre-cursors, ligands and by varying the reaction temperature. Especially, the charge carrier confinement in the nanosheets' height adjustable from 2 to 20 nm has a decisive impact on their electronic properties. This is demonstrated by their use as conduction channel in a field effect transistor [2]. Recently we also showed that especially thin nanosheets show a high carrier multiplication (CM) efficiency [3] which could make them, through the confinement induced band gap and high photoconductivity, very attractive for application in photovoltaic devices. We are already able to manufacture photovoltaic devices out of single nanosheets which show promising results

2D PbS Nanosheets Synthesis and Their Applications as Field Effect Transistors or Solar Cells

Two-dimensional, solution-processable semiconductor materials are interesting for low-cost electronic applications [1]. We demonstrate the synthesis of lead sulfide nanosheets and how their size, shape and height can be tuned by varying concentrations of pre-cursors, ligands and by varying the reaction temperature. Especially, the charge carrier confinement in the nanosheets' height adjustable from 2 to 20 nm has a decisive impact on their electronic properties. This is demonstrated by their use as conduction channel in a field effect transistor [2]. Recently we also showed that especially thin nanosheets show a high carrier multiplication (CM) efficiency [3] which could make them, through the confinement induced band gap and high photoconductivity, very attractive for application in photovoltaic devices. We are already able to manufacture photovoltaic devices out of single nanosheets which show promising results