Materials Literature
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The structure and properties of macromolecules are governed by interactions over different length scales including van der Waals and electrostatic, hydrogen bond forming, etc. In the present study, we will focus mainly on the biological polymers, which are heteropolymers composed of monomers of different types. At the s…
Gyroid is a type of three-dimensional chiral structures, which have attracted much research attention recently. A dielectric single gyroid (SG) can be a candidate for providing new means of guiding light because it has been shown to exhibit complete photonic band gaps. Owing to the chiral nature, the SG metamaterials…
The theory of surface plasmon polariton (SPP) amplification in the metal-insulator-metal structure is developed from first principles. Basing on the dyadic Green’s function of the structure, an exact analytical expression for the gain coefficient is derived. It is shown that the amplification can occur without a popul…
In this work, we study the behavioral regularity of fullerene C20 inside the icosahedral outer shell of fullerene C240. The feature of such two-shell fullerenes is that the internal fullerene will move at low temperatures in a certain way: between the potential wells. The aim of this work is to reveal the regularities…
Mg doped ZnO thin films were prepared by magnetron sputtering and were irradiated by linearly polarized femtosecond laser pulse. Scanning electron microscopy (SEM) characterizations illustrated that regularly arranged nanoripples appeared on the ablation area with the period perpendicular to the polarization direction…
The interaction between light and matter involves not only an energy transfer, but also the transfer of linear momentum. In everyday life applications this linear momentum of light is too small to play any significant role. However, in nanoscale dimensions, the associated optical forces start to play an increasingly i…
The ability to confine light in small volumes, associated to low background signals, is an important technological achievement for a number of disciplines such as biology or electronics. In fact, decoupling the source position from the sample area allows an unprecedented sensitivity which can be exploited in different…
Right and left hands are mirror images to each other, and each of them has two distinguishable faces. When two hands lay one upon another, there are several modes of stacking depending on the combination of right/left hands and the two faces. In the same manner, C3-symmetric propeller-shaped compounds possess two dist…
A new particle display method for aptamer screening is described by H. T. Soh and co-workers in their Communication on page 4796 ff. High-quality aptamers can be generated rapidly and economically by this approach.
For detecting dynamic parameters of apparatus, some specified impact experiments must be carried out on impact testing machines. The various requirements of acceleration peak and impulse duration are demanded for the impact testing machines with different functions. The material properties and geometrical configuratio…
Silicon hybrid photonics has attracted in the last years a growing interest for the integration of various materials within silicon photonics. In this picture, hollow-core slot photonic crystal waveguides play an important role as they allow an efficient overlap between the high electromagnetic power density of propag…
Fiber to planar waveguide interconnects and planar beam modifiers are crucial for the implementing efficient silicon photonic devices for communication applications. In this work, broadband performance in the 1300nm- 1600nm region is ensured by appropriately controlling the spatial variation of the effective index of…
Hydroxypropyl-β-Cyclodextrin (HP-β-CD), prepared via reaction of β-Cyclodextrin (β-CD) and propylene oxide (PO), is utilized to research solubilization of HP-β-CD on cholesterol in aqueous solution. HP-β-CD is characterized by Fourier Transform Infrared Spectrometry (FT-IR), and concentrations of cholesterol solution…
The selective synthesis of gold nanoparticles of any desired size is of great interest. Benzophenone in THF has proved to act as an efficient photocatalyst for the growth of thiolate-capped nanoparticles in the presence and in the absence of gold salts. Consequently, we explored the effect of applying thermal energy t…
The design of metasurfaces able to efficiently control the polarization state of an electromagnetic wave is of importance for various applications. We demonstrate both theoretically and experimentally that plasmonic planar L-shaped antennas can induce a 90◦-rotation of the linear polarization of light with a nearly to…
It has been well documented that ideal SERS conditions occur in the nano sized gaps between metal nanoparticles 1,2 . Aggregation of the nanoparticles is a very simple and effective way to form these gaps3,4. We have investigated the 2 salts most commonly used throughout the literature as aggregating agents. Their abs…
The pre-buried method has the potential to measure the Depth of Penetration (DOP) of a projectile into a target with a large dimension and potential dangers. Based on the numerical simulation of a reduced-scale projectile into unreinforced concrete target, the mechanism of the accelerometer pre-buried method is studie…
In the case of light emitting semiconducting polymers, different techniques have been used for the fabrication of electroluminescent devices. Experiments and characterizations have been carried out at different operating voltages and for voltage dependent emission color also combining the processability of organic mat…
Plasmonic metal-insulator-metal resonators can be designed to totally absorb an incident light. A combination of such antennas within a sub-wavelength period allows a sorting of the absorbed photons as a function of their wavelength. These structures also exhibit a high electric field enhancement in tiny volumes. We s…
The versatility of ultrashort laser pulses as a tool for laser materials processing has augmented particular interest in the past decade. Especially birefringent modifications, so-called nanogratings, have found to exhibit tremendous potential for manifold photonic functionalities. These self-assembling structures, or…