Yıl 2018, Cilt 6, Sayı 1, Sayfalar 254 - 262 2018-01-31

CdTe Kuantum Nokta Katkılı Nematik Sıvı Kristalin Dielektrik ve Performans Analizi
Dielectric and Performance Analysis of CdTe Quantum Dots Doped Nematic Liquid Crystal

Oğuz Köysal [1] , Gülsüm Kocakülah [2] , Mert Yıldırım [3] , Gülnur Önsal [4] , Özge Tüzün Özmen [5]

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Bu çalışmada çekirdek tipi kadmiyum tellür kuantum noktaları (CdTe QDs) ağırlıkça % 0,05 oranında 5CB (4-pentil-4'-siyanobifenil) nematik sıvı kristale (LC) katkılanmış ve elektrik ve dielektrik özellikleri 100 Hz-10 MHz frekans aralığında empedans ölçümleri kullanılarak araştırılmıştır. CdTe kuantum noktaların 5CB nematik sıvı kristal yapıda gösterdiği etkiyi belirlemek için dielektrik anizotropi (Δε), çapraz frekans (fcrossover), kritik frekans (fkritik), dielektrik sabiti (ε 've ε ") değerleri deneysel veriler kullanılarak elde edilmiştir. Ayrıca, eşik voltajı (Vth) ve splay elastik sabiti (K11) hesaplanmıştır. CdTe katkılanmasıyla eşik voltajı (Vth) ve eğilme elastik sabiti (K11) önemli ölçüde azaldığı görülmüştür.

 

In this work, cadmium telluride core type quantum dots (CdTe QDs) were dispersed in 4-pentyl-4′-cyanobiphenyl (5CB) nematic liquid crystal (LC) with a concentration of 0.05 % wt/wt; and their electrical and dielectric properties were investigated by using admittance measurements in the frequency range of 100 Hz - 10 MHz. In order to determine the effects of CdTe QDs in 5CB nematic LC, dielectric anisotropy (∆ε), crossover frequency (fcrossover), critical frequency (fcritical), real and imaginary parts of permittivity (ε' and ε") of neat LC and CdTe QDs dispersed LC composites were obtained using the experimental data. Moreover, threshold voltage (Vth), splay elastic constant (K11) were also calculated. It was found that Vth and K11 of QDs dispersed LC are significantly decreased due to the existence of CdTe QDs.

 

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Yazar: Oğuz Köysal (Sorumlu Yazar)
E-posta: oguzkoysal@gmail.com
Ülke: Turkey


Yazar: Gülsüm Kocakülah
E-posta: gulsumkocakulah@duzce.edu.tr

Yazar: Mert Yıldırım
E-posta: mertyildirim@duzce.edu.tr

Yazar: Gülnur Önsal
E-posta: gulnuronsal@duzce.edu.tr

Yazar: Özge Tüzün Özmen
E-posta: ozgetuzun@duzce.edu.tr

Bibtex @araştırma makalesi { dubited360125, journal = {Düzce Üniversitesi Bilim ve Teknoloji Dergisi}, issn = {}, address = {Düzce Üniversitesi}, year = {2018}, volume = {6}, pages = {254 - 262}, doi = {10.29130/dubited.360125}, title = {Dielectric and Performance Analysis of CdTe Quantum Dots Doped Nematic Liquid Crystal}, key = {cite}, author = {Tüzün Özmen, Özge and Köysal, Oğuz and Yıldırım, Mert and Kocakülah, Gülsüm and Önsal, Gülnur} }
APA Köysal, O , Kocakülah, G , Yıldırım, M , Önsal, G , Tüzün Özmen, Ö . (2018). Dielectric and Performance Analysis of CdTe Quantum Dots Doped Nematic Liquid Crystal. Düzce Üniversitesi Bilim ve Teknoloji Dergisi, 6 (1), 254-262. DOI: 10.29130/dubited.360125
MLA Köysal, O , Kocakülah, G , Yıldırım, M , Önsal, G , Tüzün Özmen, Ö . "Dielectric and Performance Analysis of CdTe Quantum Dots Doped Nematic Liquid Crystal". Düzce Üniversitesi Bilim ve Teknoloji Dergisi 6 (2018): 254-262 <http://dergipark.gov.tr/dubited/issue/34777/360125>
Chicago Köysal, O , Kocakülah, G , Yıldırım, M , Önsal, G , Tüzün Özmen, Ö . "Dielectric and Performance Analysis of CdTe Quantum Dots Doped Nematic Liquid Crystal". Düzce Üniversitesi Bilim ve Teknoloji Dergisi 6 (2018): 254-262
RIS TY - JOUR T1 - Dielectric and Performance Analysis of CdTe Quantum Dots Doped Nematic Liquid Crystal AU - Oğuz Köysal , Gülsüm Kocakülah , Mert Yıldırım , Gülnur Önsal , Özge Tüzün Özmen Y1 - 2018 PY - 2018 N1 - doi: 10.29130/dubited.360125 DO - 10.29130/dubited.360125 T2 - Düzce Üniversitesi Bilim ve Teknoloji Dergisi JF - Journal JO - JOR SP - 254 EP - 262 VL - 6 IS - 1 SN - -2148-2446 M3 - doi: 10.29130/dubited.360125 UR - http://dx.doi.org/10.29130/dubited.360125 Y2 - 2017 ER -
EndNote %0 Düzce Üniversitesi Bilim ve Teknoloji Dergisi Dielectric and Performance Analysis of CdTe Quantum Dots Doped Nematic Liquid Crystal %A Oğuz Köysal , Gülsüm Kocakülah , Mert Yıldırım , Gülnur Önsal , Özge Tüzün Özmen %T Dielectric and Performance Analysis of CdTe Quantum Dots Doped Nematic Liquid Crystal %D 2018 %J Düzce Üniversitesi Bilim ve Teknoloji Dergisi %P -2148-2446 %V 6 %N 1 %R doi: 10.29130/dubited.360125 %U 10.29130/dubited.360125