In this paper, we show the approach to enhance the optical properties of the plasmonic nanowires from the perspectives of both field enhancement and tunability. Two different cases have been suggested for the consideration: the first one uses hollow-core metamaterial interface, while the other involves metallic nanowire metamaterial interface. It has been outlined, that the use of nanowire metamaterial interface allows for stretching the frequency range of surface wave existence from 500 THz (600 nm) to approximately 1000 THz (300 nm). Moreover, the nanowire metamaterial interface demonstrates better field confinement. Submission Files Included in this PDFFile Name [File Type] cover letter.docx [Response to Reviewers] highlights.docx [Highlights] Plasmonic nanowires Gric Sep8.docx [Manuscript File]To view all the submission files, including those not included in the PDF, click on the manuscript title on your EVISE Homepage, then click 'Download zip file'. Dear Editor,First and foremost I express heartfelt appreciation to all reviewers on behalf of the authors of the manuscript. Thank you for the comments and suggestions to improve the paper. The responses to the reviewers comments are included below. Reviewer 1 (changes highlighted with yellow)In the introduction, the authors should also cite previous work on SPPs in metamaterials, specifically "Hyperbolic Polaritonic Crystals Based on Nanostructured Nanorod Metamaterials" from Wayne Dickson et al., Adv. Mat. Volume27, Issue 39, October 21, 2015, Pages 5974-5980, which considers coupling to the modes supported by such metamaterials. Additionally, SERS has gone beyond simply reaching single molecule spectroscopy: recently SERS was also used to determine the molecular orientation of single molecules. For completeness, the authors should therefore include references such as "Determining molecular orientation via single molecule SERS in a plasmonic nano-gap" from Addison R. L. Marshall et al., Nanoscale Volume 9, Issue 44, July 13, 2017, Pages 17415-17421.Addressed in the manuscript.The authors should also mention that epsilon_m needs to be negative for SPPs to exist. Although this is naturally happening in the case of a metal, here the authors consider a metamaterial which, depending on the geometry, can have either positive or negative effective permittivity.Addressed in the manuscript.Similarly, the use of epsilon_m in both the SPP dispersion at the start of the document, and later as the permittivity of the metal nanorods can lead to confusion. In the present manuscripts, the dispersion of the SPP is governed by the metamaterial's effective index as the authors later imply in equation 6.epsilon_m is used to describe the permittivity of the metal nanowires embedded into the metamaterial.The following sentence is unclear: "The mentioned frequency stands for as the intersection point of the effective dielectric permittivity perpendicular components attained tuning the diameter of the nanowire along with the distance between them." Since it is an important point of t...
Research and synthesis of materials with fundamentally new properties play the key role in the development of modern science and technology. The most perspective materials are considered to be aerogels: nanostructured materials with many useful properties. The mesoporous structure of airgels determines their widespread use, both in industry and in science.Over the past few decades, nanostructured silica-based material has become an integral part of many industry segments: thermal and noise insulation, electronics, chemistry, medicine, environmental protection, industrial and fire safety, energy, aerospace industry, consumer goods and military technology.The article discusses an experimental study of the heat-shielding properties of a heat-insulating material based on silicon oxide airgel -Insuflex. This is a flexible rolled material used for thermal insulation of elements of technological installations, pipelines, valves and control valves. Using the method of ordinal statistics, the exponential dependence of the coefficient of thermal conductivity of the airgel on the average temperature of the sample is determined. The results obtained indicate the possibility of energy-efficient use of the material in heat supply and heat consumption systems.
In geomechanical research much use has recently been made of the ultrasonic method.The stresses are usually estimated from the calibration dependence between the longitudinal wave propagation velocity and the stresses in the rock; this is found from the results of field or laboratory investigations.For salts, as the load is increased to 300 kg/cm 2 the increase in the longitudinal wave velocity is only 5-15% [I]. There is thus a marked decrease in the reliability of the measurement results.This version of the ultrasonic method should be applied to potash deposits only for a rough estimate of the stresses in the rocks.Another parameter depending on the applied load is the amplitude damping coefficient for elastic waves, which varies over a wide range. However, this acoustic characteristic is rarely used in the ultrasonic method.Difficulties arise in the measurements mainly in getting continuous acoustic contact between the transducers and the medium.The energy losses of elastic waves at the contact depend on a) the degree of working of the contact surface, b) the clamping pressure of the transducers, and c) the type of intermediate layer between the transducer and the medium, Investigations made on potash ores have revealed that a special drill, borehole transducers with pneumatic clamping, and grease to lubricate the borehole give good and continuous contact between the transducers and the medium.In this article we give the method and results of pit investigations of the stress state of the rock mass with the stress characteristics represented by the increments of the damping coefficient of ultrasound, which is given [2] bywhere As is the increment of the damping coefficient due to pressure, A= and A, are the amplitudes measured for a given load and for o = 0, respectively, and x is the source-receiver separation.For practical purposes it is more convenient to write (I) in the formwhere AyH is the amplitude measured when ~ = yH.The variation of the damping coefficient with the applied pressure was studied in laboratory conditions on specimens of rock salt, cubical in shape with sides of 120 mm. The press was a special stabilometer which could reproduce different types of stress states in the rock.In thefirst stage of the investigation the stresses were made the same in all directions (Ox = Oy = az).For direct determination of the amplitude of the transmitted waves we used a UKB-IM ultrasonic "betonoscope" (concrete flaw detector) with a V-3-33 microvoltmeter.The results of tests on 16 rock salt specimens after statistical processing were represented in the form of a family of calibration graphs for various values of o = yH (Fig. i).
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