Single Molecular Layer of Silk Nanoribbon as Potential Basic Building Block of Silk Materials

Abstract: A Voltage Controlled Divider (VCO) is a basic building block in most of the electronic systems. Phase-locked loop (PLL), tone synthesizers, Frequency Shift Keying (FSK), frequency synthesizers, etc make use of VCO’s to generate an oscillating frequency that can be decided with the help of components. Voltage Controlled Divider can be implemented for analog applications. The project proposes three types of VCO using Electric tool and LT Spice XVII tool. The three VCO’s that are implemented are CMOS Ring Oscillator, Colpitts Oscillator and Relaxation Oscillator. These circuits generate two oscillating frequencies that is decided by the circult components. Keywords: Voltage Controlled Divider (VCO), CMOS Ring Oscillator, Colpitts Oscillator, Relaxation Oscillator, oscillating frequency.

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The Adsorption Characteristics and Mechanism of Pb(II) onto Corn Straw Biochar

Journal of Biobased Materials and Bioenergy ◽

10.1166/jbmb.2021.2056 ◽

2021 ◽

Vol 15 (3) ◽

pp. 287-295

Author(s):

Liucheng Wang ◽

Huanhuan Zhao ◽

Xianglin Song ◽

Yake Li ◽

Dong Li

Keyword(s):

Molecular Layer ◽

Corn Straw ◽

Adsorption Characteristics ◽

Layer Adsorption ◽

Adsorption Data ◽

Renewable Material ◽

Increasing Temperature ◽

And Diffusion ◽

Positive Effect ◽

Single Molecular Layer

Heavy metal pollution has adversely affected the ecological environment. As an eco-friendly and renewable material, biochar has a positive effect on environmental restoration. For study the feasibility of removing lead using corn straw biochar, the adsorption characteristics and mechanism were studied. This work prepared corn straw biochar at 300 °C, and its surface properties were characterized. The adsorption kinetics, isotherm, thermodynamics were determined. The result indicated the mechanism belonged ion exchange and complexation, and the experiment were controlled by comprehensive process, which included reaction rate and diffusion. The Langmuir model had better fitting results for the adsorption data, which indicated that adsorption was chemical adsorption and single molecular layer adsorption, and the maximum adsorption amount of corn straw biochar at 25 °C, 35 °C and 45 °C were 81.63 mg/g, 83.89 mg/g and 89.21 mg/g respectively. The thermodynamic analysis showed that increasing temperature was helpful to adsorption, and the adsorption was spontaneous. The results can be used for comprehensive utilization of straw and treatment of lead pollution.

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Measurement: The Basic Building Block of Research

Basic Statistics in Criminology and Criminal Justice ◽

10.1007/978-3-030-47967-1_2 ◽

2020 ◽

pp. 13-37

Author(s):

David Weisburd ◽

Chester Britt ◽

David B. Wilson ◽

Alese Wooditch

Keyword(s):

Building Block ◽

Basic Building Block

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Optical Communication with Invisible Photons

Quantum Mechanics for Beginners ◽

10.1093/oso/9780198854227.003.0014 ◽

2020 ◽

pp. 217-226

Author(s):

M. Suhail Zubairy

Keyword(s):

Optical Communication ◽

Building Block ◽

Communication Protocol ◽

Zehnder Interferometer ◽

Transmission Channel ◽

Basic Building Block ◽

Obvious Feature ◽

Interaction Free Measurement ◽

Mach Zehnder Interferometer

It has always been a self-evident and obvious feature of any kind of communication that there should be an exchange of objects like photons or electrons between the sender and the receiver to convey any information. In this chapter a protocol is presented in which information is transmitted between a sender and receiver with no particles in the transmission channel. The basic building block of this counterfactual communication protocol, the Mach–Zehnder interferometer, is discussed. The concept of interaction-free measurement is also introduced.

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Solidification and superlubricity with molecular alkane films

Proceedings of the National Academy of Sciences ◽

10.1073/pnas.1910599116 ◽

2019 ◽

Vol 116 (51) ◽

pp. 25418-25423 ◽

Cited By ~ 5

Author(s):

Alexander M. Smith ◽

James E. Hallett ◽

Susan Perkin

Keyword(s):

Solid Phase ◽

Molecular Layer ◽

Friction Coefficients ◽

Model Studies ◽

Surface Alignment ◽

Hydrocarbon Films ◽

Nanoscale Films ◽

Alkane Films ◽

And Control ◽

Single Molecular Layer

Hydrocarbon films confined between smooth mica surfaces have long provided an experimental playground for model studies of structure and dynamics of confined liquids. However, fundamental questions regarding the phase behavior and shear properties in this simple system remain unsolved. With ultrasensitive resolution in film thickness and shear stress, and control over the crystallographic alignment of the confining surfaces, we here investigate the shear forces transmitted across nanoscale films of dodecane down to a single molecular layer. We resolve the conditions under which liquid–solid phase transitions occur and explain friction coefficients spanning several orders of magnitude. We find that commensurate surface alignment and presence of water at the interfaces each lead to moderate or high friction, whereas friction coefficients down toμ≈0.001are observed for a single molecular layer of dodecane trapped between crystallographically misaligned dry surfaces. This ultralow friction is attributed to sliding at the incommensurate interface between one of the mica surfaces and the laterally ordered solid molecular film, reconciling previous interpretations.

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Sparse Associative Memory

Neural Computation ◽

10.1162/neco_a_01181 ◽

2019 ◽

Vol 31 (5) ◽

pp. 998-1014 ◽

Cited By ~ 1

Author(s):

Heiko Hoffmann

Keyword(s):

Associative Memory ◽

Building Block ◽

Basic Building Block ◽

Small Probability ◽

Hopfield Networks ◽

New Model ◽

Brain Functions ◽

Memory Efficiency ◽

Low Efficiency

It is still unknown how associative biological memories operate. Hopfield networks are popular models of associative memory, but they suffer from spurious memories and low efficiency. Here, we present a new model of an associative memory that overcomes these deficiencies. We call this model sparse associative memory (SAM) because it is based on sparse projections from neural patterns to pattern-specific neurons. These sparse projections have been shown to be sufficient to uniquely encode a neural pattern. Based on this principle, we investigate theoretically and in simulation our SAM model, which turns out to have high memory efficiency and a vanishingly small probability of spurious memories. This model may serve as a basic building block of brain functions involving associative memory.

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Powder x-ray diffraction of turbostratically stacked layer systems

Journal of Materials Research ◽

10.1557/jmr.1996.0217 ◽

1996 ◽

Vol 11 (7) ◽

pp. 1733-1738 ◽

Cited By ~ 37

Author(s):

D. Yang ◽

R. F. Frindt

Keyword(s):

Special Form ◽

Molecular Layer ◽

X Ray Diffraction ◽

Layer System ◽

X Ray ◽

Debye Formula ◽

Diffraction Patterns ◽

Single Molecular Layer ◽

Deposition Conditions

A special form of the Debye formula for calculating the powder x-ray diffraction of a turbostratically stacked layer system is derived, and calculated diffraction patterns for turbostratically stacked graphite and MoS2 layers are presented. Single-molecular-layer MoS2, prepared by exfoliation of lithium-intercalated MoS2 in water or alcohols, has been deposited on various supports, and x-ray diffraction patterns show that the restacking of the MoS2 layers can be perfectly turbostratic. The restacked MoS2 may or may not have water or organic bilayers between them, depending on the deposition conditions.

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The remarkable activity and stability of a dye-sensitized single molecular layer MoS2ensemble for photocatalytic hydrogen production

Chemical Communications ◽

10.1039/c5cc03871e ◽

2015 ◽

Vol 51 (70) ◽

pp. 13496-13499 ◽

Cited By ~ 35

Author(s):

Tiantian Jia ◽

Molly M. J. Li ◽

Lin Ye ◽

Sam Wiseman ◽

Guoliang Liu ◽

...

Keyword(s):

Hydrogen Production ◽

Binding Affinity ◽

Molecular Layer ◽

Single Layer ◽

Eosin Y ◽

Photocatalytic Hydrogen Production ◽

Dye Sensitized ◽

Strong Binding ◽

Single Molecular Layer ◽

Dye Molecule

Single layer MoS2synthesized by exfoliation with Li is demonstrated to take up the dye molecule, Eosin Y, with strong binding affinityviasulfur vacancies.

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