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Ö Z E TO lağanüstü kararlılıktaki titanyum dioksit fotokatalitik özellikleri nedeniyle kimya endüstrisinde potansiyel uygulamalara sahiptir. Titanyum dioksit nanopartiküller sol-jel yöntemi ile sentezlenmiş ve daldırmalı kaplama yöntemi ile cam yüzey üzerine ince film hazırlamak için kullanılmıştır. Örneklerin yapısal ve fiziksel özelliklerini karaterize etmek için XRD, UV-VIS ve optik mikroskop kullanılmıştır. Sonuçlar yakma sıcaklığı ve kalınlık arttıkça, partikül boyutunun arttığını ve enerji aralığının azaldığını göstermiştir. Enerji aralığı kontrollü yarı iletkenler, yakma sıcaklığını ve kalınlığı kontrol ederek üretilebilir. Anahtar KelimelerNano ölçek ince film, TiO 2 , yarı iletken, dip kaplama. A B S T R A C TT he photocatalytic properties of titanium dioxide with extraordinary stability have potential application in chemical industry. Titanium dioxide nanoparticles were synthesized by sol-gel method and used dip-coating method for the preparation of thin films on glass substrate. To study the structural and physical characteristics of the samples, the XRD, UV-VIS and an optical microscope were used. The results show that with increasing the annealing temperature and thickness, larger particle size obtained and energy gap is reduced. Thus, by controlling the annealing temperature and thickness can be achieved to the gap-controlled semiconductors.

Background & Objectives: For over 60 years, proton beams and heavy ions have been a powerful ion therapy method for treating cancerous tumors. It is an inherent ability of high-energy ions to discharge their energy at a certain depth with high doses, which is impossible for other beams such as X-rays, gamma rays, and electron beams. Moreover, it is an excellent way to protect healthy tissues in ion therapy. Materials & Methods: Scientists have used radio frequency (RF) accelerators to generate high-energy ions. However, due to the high price and large devices, laser-plasma accelerators have received much attention. This paper has studied the best conditions for producing high-energy argon ions. For this purpose, the interaction of high-intensity laser pulses with argon nanoclusters is simulated. This simulation is based on the nanoplasma model by the particle in cell method (PIC). Results: The simulation results show that the ion energy is dependent on the parameters of the irradiated laser and the parameters of the target cluster. Conclusions: The energy of the ions increases with the intensity of the laser and the duration of the laser pulse. Access to higher energy ions is also possible by changing the radius of the cluster. The density of the initial atoms of the cluster is also an important parameter that influences the energy of ions.