Department of Physics

Item Usage Stats

Browse

Search within this community and its collections:

Collections in this community

Filters

Entity Type
Publication (4593)
Thesis (1104)
Project (135)
Open Course (23)
Patent (1)

Has File(s)
No (3177)
Yes (2679)

Author
Zhang, J. (1117)
Bocci, A. (1108)
Wang, J. (1108)
Kim, H. (1105)
Xie, S. (1092)

Subject
Nuclear and High Energy Physics (888)
Condensed Matter Physics (573)
Physics and Astronomy (miscellaneous) (333)
General Physics and Astronomy (301)
Electronic, Optical and Magnetic Materials (262)

Date Issued
1966 - 1979 (111)
1980 - 1999 (970)
2000 - 2019 (4610)
2020 - 2021 (157)

Recent Submissions

Temperature effects on optical characteristics of CdSe thin films Gullu, H. H.; Isik, M.; Surucu, O.; Hasanlı, Nızamı; Parlak, Mehmet (Elsevier BV, 2021-03-01) CdSe is one of the significant members of II-VI type semiconducting family and it has a wide range of technological applications in which optoelectronic devices take a special position. The present paper reports the struct...
The investigation of electronic nature and mechanical properties under spin effects for new half-metallic ferromagnetic chalcogenides Ag3CrX4 (X = S, Se, and Te) Erkisi, Aytac; YILDIZ, BUĞRA; Wang, Xiaotian; Isik, Mehmet; Ozcan, Yusuf; Sürücü, Gökhan (2021-02-01) © 2020This study presents the electronic and mechanical characteristics of ternary silver-based Ag3CrX4 (X = S, Se, and Te) chalcogenides having simple cubic crystalline structure (SC), conforming P4-3m (space group: 215) ...
Calculation of the inverse relaxation time and the activation energy as a function of temperature for the Raman modes close to the phase transitions in solid nitrogen Yurtseven, Hasan Hamit; Akay, O. (Elsevier BV, 2021-02-01) The inverse relaxation time is calculated as a function of temperature for the transitions of alpha - beta (P = 0) and epsilon-delta(loc)-delta (at constant pressures) in the solid N-2. For this calculation, the observed d...
Observation of in situ enhanced crystallization, negative resistance effect and photosensitivity in Tl2InGaSe4 crystals Qasrawi, A. F.; Irshaid, Tahani M. A.; Hasanlı, Nızamı (Elsevier BV, 2021-02-01) In this work, we report the properties of Tl2InGaSe4 crystals as multifunctional material. Namely, Tl2InGaSe4 crystals are grown by the modified Bridgman method using mixtures of TlInSe2 (50%) and TlGaSe2 (50%) single crys...
3D-graphene-laser patterned p-type silicon Schottky diode Orhan, Elif Oz; Efil, Esra; Bayram, Ozkan; Kaymak, Nuriye; Berberoğlu, Halil; Candemir, Ozun; Pavlov, Ihor; Ocak, Sema Bilge (Elsevier BV, 2021-01-01) © 2020 Elsevier LtdThe influence of the laser patterning (LP) process on the quality of graphene (Gr) film and Schottky diode characteristics was researched in this study. First of all, p-type silicon (Si) was patterned by...
Ultra-thin Al2O3 capped with SiNx enabling implied open-circuit voltage reaching 720mV on industrial p-type Cz c-Si wafers for passivated emitter and rear solar cells Koekbudak, Gamze; Kececi, Ahmet E.; Nasser, Hisham; Turan, Raşit (American Vacuum Society, 2021-01-01) In this study, we report on the passivation quality of atomic layer deposition grown ultra-thin Al2O3 and Al2O3 capped with plasma-enhanced chemical vapor deposition deposited SiNx on Cz p-type wafers for the rear side of ...
Süpernova Kalıntısı CTB 109 ile Etkileşimdeki Genç Yıldızsal Nesneler Dinçel, Baha; M. Sasaki; Yerli, Sinan Kaan; Makala, Minja; Knıes, Johathan (null; 2020-12-11) CTB109 SNR’sinin ılık toz bulutundaki iki gen¸c yıldızsal nesnenin (YSO), J230230.53+585807.9 (J1) ve J230229.64+585755.5 (J2), optik ve NIR fotometrik g¨ozlemlerini payla¸sıyoruz. ˙ Iki YSO’nun SN ¸sok dalgası aldı˘gı d¨u...
DAG Odak Düzlemi Aygıtları: Birinci Nesil Öngörüleri Saguner Rambaldi, Tenay; Özbey Arabacı, Mehtap; Aliş, Sinan; Yerli, Sinan Kaan; Yeşilyaprak, Cahit (null; 2020-12-11)
DAG: Atmosferik ve Astronomik Gözlem Sistemleri Yüzlükoğlu, Funda; Güney, Yavuz; Nıaeı, Mohammad Shameonı; Kılıç, Yücel; Yerli, Sinan Kaan; Yeşilyaprak, Cahit (null; 2020-12-11) DAG Projesi kapsamında; gözlemevi yerleşkesine kurulmuş ve kurulacak olan sürekli ölçüm yapan ve yapacak olan atmosferik ve astronomik sistemlerin (AWOS, Davis, Boltwood, ASC, SM, SQM, MASS-DIMM, vb) tanıtımı, teknik özell...
Dünyada Astronomik Yer Seçimi Çalışması Aksaker, Nazım; Kaba, Kazım; Kurt, Zuhal; Seyhan, Ravide K; Erdoğan, Mehmet Akif; Yerli, Sinan Kaan; Yeşilyaprak, Cahit; Küçük, İbrahim; Atılan, Mustafa (null; 2020-12-11) Teknolojinin geli¸smesi, astronomik alanda b¨uy¨uk teleskopların ¨uretimini hızlandırmı¸stır. Uretilen teleskoplardan maksimum ¨ verimin alınabilmesi i¸cin yerle¸skenin en uygun ko¸sullara sahip olması gerekmektedir. D¨uny...
foto-DAG: fotoğraflarla Doğu Anadolu gözlemevi Yerli, Sinan Kaan; Erdem, Aytekin; Güney, Yavuz; Nıaeı, Mohammad Shameonı; Özbaldan, Emrah Emin; İkiz, Tuba; Yeşilyaprak, Cahit (null; 2020-12-11) Bu çalışmada Doğu Anadolu Gözlemevi'nin yapım sürecini, fotoğraflarla ve kısa anlatımlarla yıllara göre özetleyen bir poster dizisi oluşturmak amaçlanmıştır. 2011 - 2014 yılları arasında yapılan çalışmalar, her sene ayrı b...
İstabul Üniversitesi Gözlemevi Odak Düzlemi Aygıtı Test ve Karakterizasyon Laboratuvarı Aliş, Sinan; Güver, Tolga; Erol, Ayşe; Ege, Ergün; Kay, Burak; Yelkenci, Korhan; Yeşilyaprak, Cahit; Keskin, Onur; Yerli, Sinan Kaan; Sercan, Fahrettin (null; 2020-12-11) Do ̆gu Anadolu G ̈ozlemevi Odak D ̈uzlemi Aygıtları ve Adaptif Optik Sistemi ba ̧slıklı, 2016K121370 numaralı T.C. KalkınmaBakanlı ̆gı projesi ve ̇Istanbul ̈Universitesi Rekt ̈orl ̈u ̆g ̈u deste ̆ginde y ̈ur ̈uyen ̧calı ̧...
DAG odak düzlemi araçları - hedefler ve seçenekler YERLİ, SİNAN KAAN; YEŞİLYAPRAK, CAHİT; KESKİN, ONUR; GÜVER, TOLGA (null; 2020-12-11) DAG projesi çerçevesinde, teleskobun da tanımlanması ve optiğinin belirlenmesinden sonra Türk Astronomisinin gereksinim ve gelecek hedefleri de gözetilerek proje ekibi DAG teleskobunun iki Nasmyth odağına yerleştirilecek o...
Performance of Particle Tracking Using a Quantum Graph Neural Network Tüysüz, Cenk; Novotny, Kristiane; Rieger, Carla; Carminati, Federico; DEMİRKÖZ, MELAHAT BİLGE; Dobos, Daniel; Fracas, Fabio; Potamianos, Karolos; Vallecorsa, Sofia; Vlimant, JeanRoch (null; 2020-12-02) The Large Hadron Collider (LHC) at the European Organisation for Nuclear Research (CERN) will be upgraded to further increase the instantaneous rate of particle collisions (luminosity) and become the High Luminosity LHC. T...
Optical characteristics of Bi12SiO20 single crystals by spectroscopic ellipsometry Isik, M.; Delice, S.; Nasser, H.; Hasanlı, Nızamı; Darvishov, N. H.; Bagiev, V. E. (Elsevier BV, 2020-12-01) Structural and optical characteristics of Bi12SiO20 single crystal grown by the Czochralski method were investigated by virtue of X-ray diffraction (XRD) and spectroscopic ellipsometry measurements. XRD analysis indicated ...
Nanosphere Concentrated Photovoltaics with Shape Control Esmaeilzad, Nasim Seyedpour; Demir, Ahmet Kemal; Hajivandi, Jamileh; Ciftpinar, Hande; Turan, Raşit; KURT, HAMZA; Bek, Alpan (2020-12-01) Dielectric colloidal nanospheres (NSs) are promising candidates for light management in photonic devices such as solar cells (SCs). NS arrays can direct the broad incident solar radiation into a set of tighter foci, at whi...
Fano-control of down-conversion in a nonlinear crystal via plasmonic-quantum emitter hybrid structures Artvin, Zafer; Gunay, Mehmet; Bek, Alpan; TAŞGIN, MEHMET EMRE (The Optical Society, 2020-12-01) Control of the nonlinear response of nanostructures via path interference effects, i.e., Fano resonances, has been studied extensively. In such studies, a frequency conversion process takes place near a hot spot. Here, we ...
Introduction to Simulation Methods for Gas Discharge Plasmas Rafatov, İsmail; Kudryavtsev, Anatoly (Institute of Physics Publishing (IOP), 2020-12-01) Gas discharge plasma is the most common type of low-temperature plasma, with a large number of practical applications covering almost all areas of modern science and technology. This book is an introduction to the numerica...
Interpretation of SARS-CoV-2 behaviour on different substrates and denaturation of virions using ethanol: an atomic force microscopy study ÇELİK, ÜMİT; ÇELİK, KÜBRA; Celik, Suleyman; ABAYLI, HASAN; ŞAHNA, KEZBAN; TONBAK, ŞÜKRÜ; AŞÇI TORAMAN, ZÜLAL; Oral, Ahmet (Royal Society of Chemistry (RSC), 2020-12-01) Coronavirus (SARS-CoV-2) is a respiratory infection virus that was first detected in Wuhan, China. The virus causes COVID-19 disease and the outbreak was recognised as a pandemic by the World Health Organization (WHO) in M...
On the electrical and charge conduction properties of thermally evaporated MoOx on n- and p-type crystalline silicon GÜLNAHAR, MURAT; Nasser, Hisham; Salimi, Arghavan; Turan, Raşit (Springer Science and Business Media LLC, 2020-11-01) In this work, the electrical and charge conduction characteristics of a contact structure featuring thermally evaporated MoOx, deposited on n- and p-type crystalline silicon (c-Si), are extensively investigated by room tem...