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Seminars»22.10.2015 - Kamil Boratay Alıcı : Optical Biosensors, Compact Particle Accelerators and the ITER

22.10.2015 - Kamil Boratay Alıcı : Optical Biosensors, Compact Particle Accelerators and the ITER

Optical Biosensors, Compact Particle Accelerators and the ITER

Kamil Boratay Alıcı
Tübitak Marmara Araştırma Merkezi, Malzeme Enstitüsü
22 October 2015, Thursday, 14:40
Cavid Erginsoy Seminar Room, Physics Department, 3rd floor

Abstract:
Chronic diseases decrease life time expectancy and economic efficiency of individuals and thereby decrease countries’ work force quality and quantity. Prevention and treatment of heart, diabetes and cancer diseases has a significant effect on economic development of countries. Effect of heart disease, heart stroke and diabetes to the national income of China, Russia, India, and UK are expected to be 54, 33, 27, 4.8 billion USD in 2015. Last year, cancer has become the most deadly chronic disease. US National Cancer Institute allocate 100 million USD annual research funds for the early detection, prevention, and treatment of cancer. In the first part of the presentation spectral hybridization of organic and inorganic resonant materials and related bio-sensing mechanism will be explained. Surface enhanced infrared absorption (SEIRA) technique, bound proteins, peptides, and a Fano-resonant metasurface are used to illustrate the concept. Vibrational modes of proteins and peptides couple to the underlying metasurface and related spectral signatures are investigated. This optical, label-free, nonperturbative technique provides information on the structure and orientation of bound proteins. Shift of the metasurface resonance can also provide real time binding of analytes to the surface. All of this data opens up interesting opportunities for the early detection of cancer at the molecular level.

We continue with brief explanation of a compact solid state accelerating structure based on resonant surface modes. The structure is composed of SiC on Si layers separated to create subwavelength acceleration channel. Surface wave modes are numerically and experimentally characterized with angle resolved microscopy and tunable CO2 laser. Existing superluminuos mode paves the way to table top charged particle acceleration. Ultrashort electron bunches can be characterized optically by using the same structure. Last part of the talk deals with ITER project. In year 1951, in the Idaho State of USA it has been proven that an experimental generating reactor (EBR-I) can generate electricity by using nuclear energy. 3 years after, Russia added 5MW, and 2 years after that UK added 50 MW nuclear energy plant to their grids. Today, as of January 2013, there are 437 nuclear power plants in the world generating 372 GW of power. In 15 countries 68 nuclear power plants are under construction to generate 65 GW of power. According to the 2012 data nuclear energy has 4% share and follows oil (33%), coal (30%), natural gas (24%) and hydroelectricity (7%).

International thermonuclear experimental reactor (ITER) is the most advanced experiment that aims to demonstrate technological and scientific feasibility of fusion energy. The quality of the reactor is planned to exceed 10 that is the ratio of generated fusion power to input power. The machine is designed to produce 500 MW and will be the first tokamak that generates net fusion energy. ITER will be a technology testing platform for commercial fusion reactors. ITER will be followed by fusion based electricity plant (DEMO) whose theoretical design will be completed in 2017 and is planned to add to the grid 2000-4000 MW power in 2040.

Reminder: Tea and cookies will be in the seminar room before the seminar.