Graphene spin-coated electrode for polyacrylonitrile acoustic nanogenerators

Mapping Intimacies ◽

10.21203/rs.3.rs-894149/v1 ◽

2021 ◽

Author(s):

Sedigheh Aghayari

Keyword(s):

Nickel Nanoparticles ◽

In Situ Synthesis ◽

Coated Electrode ◽

The Subject ◽

First Time ◽

Piezoelectric Nanogenerators ◽

High Dust ◽

Screen Ink

Abstract In recent years piezoelectric nanogenerators, due to their more durability in high dust or humidity are more attractive than triboelectric ones. So, increasing their outputs is the subject of much researches. I focused on electrodes of the acoustic nanofibers nanogenerators for the first time. Here, I introduced a new electrode that is cheaper and does not result in lower outputs. Here for the first time graphene spin-coated ink was used for polyacrylonitrile-based acoustic nanogenerator. The results of the tests compared with the in-situ synthesis of nickel nanoparticles on the layer and using graphene spin-coated screen ink and conductive tapes. Finally, producing sound by this graphene ink was done too.

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In-situ synthesis of graphene decorated with nickel nanoparticles for fabricating reinforced 6061Al matrix composites

Materials Science and Engineering A ◽

10.1016/j.msea.2017.05.084 ◽

2017 ◽

Vol 699 ◽

pp. 185-193 ◽

Cited By ~ 46

Author(s):

Guang Liu ◽

Naiqin Zhao ◽

Chunsheng Shi ◽

Enzuo Liu ◽

Fang He ◽

...

Keyword(s):

Nickel Nanoparticles ◽

In Situ Synthesis ◽

Matrix Composites

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From a Basic Microalga and an Acetic Acid Bacterium Cellulose Producer to a Living Symbiotic Biofilm

Materials ◽

10.3390/ma12142275 ◽

2019 ◽

Vol 12 (14) ◽

pp. 2275

Author(s):

Vítor Nóbrega ◽

Marisa Faria ◽

Antera Quintana ◽

Manfred Kaufmann ◽

Artur Ferreira ◽

...

Keyword(s):

Acetic Acid ◽

Acetic Acid Bacterium ◽

Growth Media ◽

Media Composition ◽

Symbiotic Interaction ◽

Microalgae Biomass ◽

The Subject ◽

Living Material ◽

First Time

Bacterial cellulose (BC) has recently been the subject of a considerable amount of research, not only for its environmentally friendly biosynthesis, but also for its high potential in areas such as biomedicine or biomaterials. A symbiotic relationship between a photosynthetic microalga, Chlamydomonas debaryana, and a cellulose producer bacterium, Komagataeibacter saccharivorans, was established in order to obtain a viable and active biofilm. The effect of the growth media composition ratio on the produced living material was investigated, as well as the microalgae biomass quantity, temperature, and incubation time. The optimal temperature for higher symbiotic biofilm production was 30 °C with an incubation period of 14 days. The high microalgae presence, 0.75% w/v, and 60:40 HS:BG-11 medium (v/v) induced a biofilm microalgae incorporation rate of 85%. The obtained results report, for the first time, a successful symbiotic interaction developed in situ between an alkaline photosynthetic microalga and an acetic acid bacterium. These results are promising and open a new window to BC living biofilm applications in medical fields that have not yet been explored.

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Louis Hunton (1814-1838) - English Pioneer in Ammonite Biostratigraphy

Earth Sciences History ◽

10.17704/eshi.3.1.82lv152472004v61 ◽

1984 ◽

Vol 3 (1) ◽

pp. 58-68 ◽

Cited By ~ 1

Author(s):

H. Torrens ◽

T. Getty

Keyword(s):

Family Business ◽

Scientific Work ◽

North East ◽

The North ◽

The Family ◽

The Subject ◽

First Time ◽

Practical Demonstration ◽

Open Cast

In any discussion of the historical development of what was later to be named Biostratigraphy it is often assumed that a modern basis for the subject had already been reached by the cumulative work in the subject up to 1815; culminating in that of William Smith (1769-1839) and Alexandre Brongniart (1770-1847). But to this time fossils had only been used to identify (and discriminate between) often repetitive lithological units or to establish a relationship between rock units in different areas. The practical demonstration that particular lithological units could be regularly subdivided with significant consequences, on the basis of their contained fossils was a later achievement over several generations. One of the first to free stratigraphical palaeontology from such a lithological control was the forgotten Englishman Louis Hunton (1814-1838). In this paper Hunton's origins from a successful alum making family in the north-east of Yorkshire in the north of England and his short life and scientific work are described for the first time. The family business of alum making from the highly fossiliferous local alum shales, which were extracted open-cast, directly introduced Hunton to stratigraphical palaeontology. He followed up this work by study in London, where his pioneering paper was read to the Geological Society of London in 1836. He died less than 2 years later but had helped lay a foundation for major biostratigraphic advances by his insistence that only fossils collected in situ should be used in such work and then that the species, of especially ammonites, in his Yorkshire strata had particularly limited and invariable relative positions within that lithological sequence. His work is also compared with that of his contemporary W.C. Williamson and the conclusion reached that Hunton, because of his emphasis in the merits of ammonites, deserves more to be remembered as a pioneer of Jurassic biostratigraphy.

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From Ag2S to luminescent Ag–In–S nanocrystals via an ultrasonic method – an in situ synthesis study in an NMR tube

Journal of Materials Chemistry C ◽

10.1039/d0tc01880e ◽

2020 ◽

Vol 8 (26) ◽

pp. 8942-8952

Author(s):

Patrycja Kowalik ◽

Mateusz Penkala ◽

Piotr Bujak ◽

Angelika Kmita ◽

Marta Gajewska ◽

...

Keyword(s):

Ultrasonic Method ◽

In Situ Synthesis ◽

Preparation Conditions ◽

First Time

Taking advantage of “mild” preparation conditions we have been able for the first time to perform the synthesis of Ag2S and luminescent AgInS2 nanocrystals in an NMR tube.

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MORPHODYNAMICS OF THE SHORES OF THE VISTULA SPIT (THE BALTIC SEA) IN A PERIOD OF 2002-2015 BY RESULTS OF IN-SITU MEASUREMENTS

Proceedings of International Conference "Managinag risks to coastal regions and communities in a changinag world" (EMECS'11 - SeaCoasts XXVI) ◽

10.31519/conferencearticle_5b1b943e73f9e6.07698800 ◽

2017 ◽

Cited By ~ 1

Author(s):

Valentina Bobykina ◽

Boris Chubarenko ◽

Konstantin Karmanov ◽

...

Keyword(s):

Erosion Rate ◽

The South ◽

The Baltic Sea ◽

The North ◽

Quantitative Characteristics ◽

The Subject ◽

The Baltic ◽

First Time

For the first time, the quantitative characteristics of the Vistula Spit shore dynamics based on the ground-based monitoring data for 2002-2015 were presented. On the sea shore, 3 sections can be distinguished by the direction of coastal processes, i.e. the stable section to the north of the Strait of Baltiysk, the eroded 4-km section to the south of the Strait of Baltiysk, with maximum erosion rate up to 2 m/year; in the remaining area of the Spit (21 km) to the Polish border there is an alternation of stable, eroded and accumulative areas. Since 2011, a steady erosion (in the stable segments of the third section) and general weakening of the erosion rate (in the second section) have been recorded. 50% of the length of the lagoon shore was the subject to annual active erosion (0.2 - 1.4 m/year). The beaches of the sea and lagoon shores of the Vistula Spit were mainly composed of medium sands. The alongshore variability in particle size distribution on the sea and lagoon shores (according to the 2015 survey data) actually fail to correlate with long-term dynamic processes, with the exception of the steadily eroded 4-kilometer area on the sea coast to the south of the Strait of Baltiysk. Variations in the composition of sediment along the shore on the shoreline are most likely associated with the results of the latest wave processing (or storm processing and eolian transport in the case of an average beach sample).

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FORMATION OF NICKEL NANOPARTICLES IN SOLUTIONS OF A HYDROPHILIC GRAFT COPOLYMER

Polymer journal ◽

10.15407/polymerj.43.02.079 ◽

2021 ◽

Vol 43 (2) ◽

pp. 79-94

Author(s):

Т.B. ZHELTONOZHSKAYA ◽

◽

N.М. PERMYAKOVA ◽

A.S. FOMENKO ◽

L.R. KUNITSKAYA ◽

...

Keyword(s):

Graft Copolymer ◽

Nickel Nanoparticles ◽

Pure Water ◽

In Situ Synthesis ◽

Simple Method ◽

Resonance Band ◽

Vis Spectroscopy ◽

Copolymer Matrices ◽

Kinetics Of

A graft copolymer of poly(vinyl alcohol) and polyacrylamide (PVA-g-PAAm) with interacting main and grafted chains was synthesized by radical matrix polymerization of PAAm from the PVA backbone in an aqueous medium. Its basic molecular parameters including the number and length (molecular weight) of grafts were determined using elemental analysis, DTGA and viscometry. The copolymer macromolecules formed special monomolecular micelles of elipsoidal shape and length ~18-64 nm in aqueous solutions due to the formation of intramolecular polycomplexes between the main and grafted chains. This copolymer was used as a hydrophilic matrix for the in situ synthesis of nickel nanoparticles (NiNPs) in aqueous solutions.On the basis of UV-Vis spectroscopy, an original and simple method for monitoring the kinetics of the formation and yield of metal nanoparticles in systems in which a surface plasmon resonance band does not appear has been proposed and implemented. Using this approach, the kinetics of borohydride reduction of Ni-salt to NiNPs in pure water and PVA-g-PAAm solutions was studied depending on the concentrations of Ni-salt and copolymer matrices. An increase in the initial rate of accumulation and yield of NiNPs with an increase in the concentration of Ni-salt and a decrease in both parameters in copolymer solutions in comparison with pure water was established. At the same time, the accumulation rate and NiNP yield in a complex way was depended on the matrix concentration that was determined by the ratio of such factors as a decrease in the diffusion rate of NaBH4 molecules in copolymer solutions and the accumulation of Ni2+-ions in matrix particles due to complexation with active chemical groups at the first stage of reduction process. The morphology and main structural elements of the NiNPs/PVA-g-PAAm composition were revealed using TEM. It was shown that the in situ synthesis of NiNPs in copolymer matrices was accompanied by the “detachment” of PAAm grafts from the main PVA chains and led to the appearance of two new structures, such as “hairy coils” and “hairy rods”, containing small spherical NiNPs (d~0,5–12,0 nm) in isolated and chain states, respectively. The appearance of the latter structures was explained by the formation of coordination complexes of Ni2+-ions with active groups of both PVA and PAAm chains at the first stage of the reduction reaction.

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Arteries of the antebrachium and manus of the tokay (Gekko gecko) (Reptilia: Gekkonidae)

Canadian Journal of Zoology ◽

10.1139/z81-085 ◽

1981 ◽

Vol 59 (4) ◽

pp. 573-582 ◽

Cited By ~ 5

Author(s):

Anthony P. Russell

Keyword(s):

Circulatory System ◽

Arterial System ◽

Functional Interpretation ◽

Gekko Gecko ◽

Low Viscosity ◽

Adhesive Pads ◽

The Subject ◽

First Time

The role of the circulatory system in the functioning of the subdigital adhesive pads of geckoes has been the subject of much discussion. However, the morphology and configuration of the blood system in the foot has remained poorly understood, rendering functional interpretation of the blood sinuses simplistic. Here the major arterial vessels of the manus are described for the first time and a discussion of their geometry is presented. Due to the paucity of information concerning the arterial system of the appendages of lizards a description of the major vessels of the antebrachium is also given.The data presented are based on the study of material injected with low-viscosity silicone rubber and then cleared so that vessels may be studied in situ. The data are pertinent to subsequent discussions of the microvasculature of the subdigital lamellae and of reconsiderations of their structure and form.

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Ex Situ and In Situ Synthesis and Characterization of Nickel Nanoparticles on High Surface Area Silica Support

Microscopy and Microanalysis ◽

10.1017/s1431927608085796 ◽

2008 ◽

Vol 14 (S2) ◽

pp. 282-283 ◽

Cited By ~ 1

Author(s):

R Banerjee ◽

PA Crozier

Keyword(s):

New Mexico ◽

Nickel Nanoparticles ◽

High Surface ◽

High Surface Area ◽

In Situ Synthesis ◽

Ex Situ ◽

Synthesis And Characterization ◽

Silica Support

Extended abstract of a paper presented at Microscopy and Microanalysis 2008 in Albuquerque, New Mexico, USA, August 3 – August 7, 2008

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In situ synthesis of novel ZIF-8 membranes on polymeric and inorganic supports

Journal of Materials Chemistry A ◽

10.1039/c5ta01178g ◽

2015 ◽

Vol 3 (14) ◽

pp. 7469-7476 ◽

Cited By ~ 37

Author(s):

V. I. Isaeva ◽

M. I. Barkova ◽

L. M. Kustov ◽

D. A. Syrtsova ◽

E. A. Efimova ◽

...

Keyword(s):

In Situ Synthesis ◽

Inorganic Supports ◽

First Time

The fabrication of integrated ZIF-8 membranes via a direct in situ crystallization on a porous polyacrylonitrile material and a composite aluminum zirconate based support was performed for the first time.

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