Materials Literature
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The paper presents the development of Shack-Hartmann sensor as in-situ metrology technique that can be integrated to the machining platforms and helps in the development process of aspheric and freeform optics within the required tolerances.
Francine Guice, Book/Media Review, The Journal of Negro Education, Vol. 87, No. 3, Innovations in African American Educational Research: A Special Issue Commemorating the 150th Anniversary of W.E.B. Du Bois’ Birth (Summer 2018), pp. 350-351
We describe the design of metamaterial tunable notch filter operating from 8 to 12 µm based on the guided-mode resonance phenomenon using dielectric materials germanium and zinc selenide and their characterization using quantum cascade lasers.
We propose a method for creating tunable localized surface plasmon resonance (LSPR) by applying a variable bias to metallic nanospheres. This method base on a different extinction equation and has been supported by experiments.
МАТЕМАТИЧЕСКОЕ МОДЕЛИРОВАНИЕ ПРОЦЕССА СИНТЕЗА ГАЗОГИДРАТА ПРИ НАГНЕТАНИИ ГАЗА В СНЕЖНЫЙ МАССИВ, НАСЫЩЕННЫЙ ТЕМ ЖЕ ГАЗОМА
Metasurfaces offer the ability to shape optical pulses with unprecedented resolution. Here, we demonstrate dynamic shaping of <15 femtosecond ultrafast laser pulses using a Taylor series system in conjunction with silicon metasurfaces.
This thesis presents a characterization study of Cadmium Zinc Telluride with a 4% Zinc molar concentration using five different techniques. Three of the characterization methods – X-ray diffraction (XRD), transmission electron microscopy (TEM) and wet chemical etching – were used to study the atomic arrangement of the…
We demonstrate broadband and gate-tunable conducting oxide epsilon-near-zero perfect absorbers grown by atomic layer deposition. Absorption bandwidth (> 90%) of 214 nm for Berreman mode in NIR region is realized.
The paper considers the method of obtaining quasi-Barker codes based on numerical ruler-bundles. Their advantages, basic parameters and areas of application are given. The algorithm is implemented on FPGA EP3C16F484N6 of Altera firm. The functional diagram of the DS-SS system using quasi-barker codes is presented, Qua…
We demonstrate Coulomb blockade in monolayer WSe2 quantum dots. Further, gate tunable hybridization of the localized and continuum of electron states in a Fermi sea is observed due to strong tunnel interaction.
This thesis describes the synthesis, properties and applications of the nanostructured graphene with different dimensionalities from 3D foams to, 2D film, and 0D graphene quantum dots (GQDs), and from micron-porous to nanoporous. The applications of the nanostructured graphene include batteries, photoluminescence and…
In this study, we propose a polarization-interferometric nonlinear confocal microscope targeted on Drug Delivery System (DDS) spectroscopic imaging. The microscope successfully measured microscopic optical anisotropy in a single DDS nano-particle.
Fresnel coefficients for LCP/RCP modes are computed for s-polarized wave transmission across an achiral/chiral interface. In this work, 2D image transmission and recovery is examined using dispersive dielectric parameters, PCM encoding and discrete sideband analysis.
I derive the optical response of a metasurface starting from the microscopic description. Surprisingly the advanced potential solutions of the inhomogeneous Maxwell's equations are necessary to compute the macroscopic fields.
The structure of monolayers of NiFe 2 O 4 nanoparticles at their deposition by Langmuir-Blodgett methods and the method of dripping onto the substrate is shown. The high efficiency of obtaining homogeneous monolayers of nanoparticles is proved by using both methods. The effect of annealing on the structure and phase c…
Based on S-matrix formalism a method for analyzing and designing vertical grating couplers is presented. Optimal efficiency values and corresponding design parameters are provided, including a theoretical return loss limit better than 56dB.
Dealing with radionuclides includes trapping the vapors and storing it for decay. However, these methods can involve considerable expense in infrastructure, manpower and monitoring. Legislation requires the presence of air filtration systems with detectors to monitor and control the release of radionuclides into the a…
We present enhanced characteristics of surface plasmon resonance biosensing with nanogap-based light-matter colocalization. Optical signature was shown to increase by nearly 15 times than conventional detection with highest sensitivity at a relatively large gap.
Multifocal optical and flat meta-lenses are investigated towards the design possibility of an improved multifocal meta-lens with ultra-thin multilayers and flat shape that can overcome the background noise occurring from the physical restriction of multiple focus regions, typical in both multifocal conventional and me…
본 연구에서는 대표적인 친환경 소재인 바이오복합재료(bio-composite)를 이용한 3D 프린터 필라멘트를 제작하였다. 바이오복합재료의 제조를 위해 매트릭스로는 생분해성 고분자인 poly lactic acid (PLA)를 그리고 충전제로는 대나무 분말(Bamboo flour)을 사용하였다. 대나무는 담양에서 생산되는 왕대, 솜대, 죽순대를 이용하였으며, 대나무 분말과 PLA의 혼합비율은 중량기준 10/90, 20/80, 30/70으로 설정하였다. 3개 죽종으로 제조한 대나무/PLA 바이오복합재료의 기본물성 평가를 위해 인장강도를 비교하였다. 그 결과, 왕대 분말…