Tailoring Characteristic Wavelength Range of Circular Quantum Dots for Detecting Signature of Virus in IR Region

2015 ◽  
pp. 353-363
Author(s):  
Swapan Bhattacharyya ◽  
Arpan Deyasi
Keyword(s):  
Quantum Dots ◽  
Wavelength Range ◽  
Characteristic Wavelength

scholarly journals ANALISIS PENGARUH PENAMBAHAN NANOPARTIKEL EMAS TERHADAP INTENSITAS EMISI DAN WAKTU PELURUHAN FOTOLUMINESENSI KUANTUM DOT CDSE 618

2018 ◽  
Vol 3 (1) ◽  
pp. 23-30
Author(s):  
Muhammad Lawrence Pattersons ◽  
Isnaeni Isnaeni
Keyword(s):  
Quantum Dots ◽  
Gold Nanoparticles ◽  
Wavelength Range ◽  
Decay Time ◽  
Emission Intensity ◽  
Time Decay ◽  
Time Resolved ◽  
Photoluminescence Decay ◽  
Time Resolved Photoluminescence ◽  
Absorption Wavelength

Abstrak Telah dilakukan pencampuran nanopartikel emas dengan kuantum dot CdSe 618. Tujuan dari penelitian ini adalah untuk mengetahui pengaruh penambahan nanopartikel emas terhadap intensitas emisi dan waktu peluruhan fotoluminesensi kuantum dot CdSe 618. Dalam 2 mL kuantum dot CdSe 618, ditambahkan nanopartikel emas sebanyak 40 µL, 80 µL, dan 120 µL. Pada setiap penambahan tersebut, dilakukan pengujian fotoluminesensi dan time-resolved photoluminescence, masing-masing untuk mengetahui intensitas emisi dan waktu peluruhan fotoluminesensi kuantum dot CdSe 618 setelah ditambahkan dengan nanopartikel emas. Dilakukan pula pengukuran terhadap rentang panjang gelombang absorpsi dari nanopartikel emas, beserta ukuran diameter partikel-partikelnya. Hasil pengujian menunjukkan bahwa secara keseluruhan, intensitas emisi kuantum dot CdSe 618 setelah ditambahkan dengan nanopartikel emas menjadi lebih rendah, dan nilai waktu peluruhan fotoluminesensi menjadi lebih besar. Penurunan intensitas emisi dan peningkatan waktu peluruhan fotoluminesensi diakibatkan oleh kemunculan plasmon pada nanopartikel emas.  Kata-kata kunci: nanopartikel emas, kuantum dot, fotoluminesensi.   Abstract We have done the mixing of gold nanoparticles and CdSe 618 quantum dots. The purpose of this study is to see the influence of gold nanoparticles increment to emission intensity and photoluminescence decay time of CdSe 618 quantum dots. Into 2 mL of CdSe 618 quantum dots, we added gold nanoparticles as much as 40 µL, 80 µL, and 120 µL. At each adding, we did photoluminescence and time-resolved photoluminescence testings, to see emission intensity and photoluminescence time decay of CdSe  618 quantum dots after the adding of gold nanoparticles. We also did a measurement of absorption wavelength range of gold nanoparticles, along with diameter size of the particles. The results showed that, overall, the emission intensity of CdSe 618 quantum dots became lower after the adding of gold nanoparticles, and the value of photoluminescence decay time became bigger. The decrease of emission intensity and the increment of photoluminescence decay time were caused by the appearance of a plasmon at gold nanoparticles.       Keywords: gold nanoparticles, quantum dots, photoluminescence.

Wide-wavelength-range control of photoluminescence polarization in closely stacked InAs/GaAs quantum dots

2019 ◽  
Vol 125 (23) ◽  
pp. 234304 ◽  
Author(s):  
Toshiyuki Kaizu ◽  
Yusuke Tajiri ◽  
Takashi Kita
Keyword(s):  
Quantum Dots ◽  
Wavelength Range ◽  
Wide Wavelength Range

scholarly journals The Biosynthesis of Infrared-Emitting Quantum Dots in Allium Fistulosum

2016 ◽  
Vol 6 (1) ◽  
Author(s):  
M. Green ◽  
S. J. Haigh ◽  
E. A. Lewis ◽  
L. Sandiford ◽  
M. Burkitt-Gray ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Solid State ◽  
Solar Energy ◽  
Wavelength Range ◽  
Spectral Region ◽  
Near Infrared ◽  
Allium Fistulosum ◽  
Ambient Conditions ◽  
Living Plant ◽  
Infrared Spectral

Abstract The development of simple routes to emissive solid-state materials is of paramount interest and in this report we describe the biosynthesis of infrared emitting quantum dots in a living plant via a mutual antagonistic reaction. Exposure of common Allium fistulosum to mercury and tellurium salts under ambient conditions resulted in the expulsion of crystalline, non-passivated HgTe quantum dots that exhibited emissive characteristics in the near-infrared spectral region, a wavelength range that is important in telecommunications and solar energy conversion.

Epitaxial growth of quantum dots on InP for device applications operating at the 1.55 μm wavelength range

2014 ◽  
Author(s):  
E. S. Semenova ◽  
I. V. Kulkova ◽  
S. Kadkhodazadeh ◽  
D. Barettin ◽  
O. Kopylov ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Epitaxial Growth ◽  
Wavelength Range ◽  
Device Applications

Intraband absorptions in GaN/AlN quantum dots in the wavelength range of 1.27–2.4 μm

2003 ◽  
Vol 82 (6) ◽  
pp. 868-870 ◽  
Author(s):  
Kh. Moumanis ◽  
A. Helman ◽  
F. Fossard ◽  
M. Tchernycheva ◽  
A. Lusson ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Wavelength Range

Photoluminescence from multilayer InAs/GaAs structures with quantum dots in the 1.3–1.4 μm wavelength range

2000 ◽  
Vol 26 (7) ◽  
pp. 631-633
Author(s):  
V. A. Egorov ◽  
V. N. Petrov ◽  
N. K. Polyakov ◽  
G. É. Tsyrlin ◽  
B. V. Volovik ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Wavelength Range

Self Assembled InAs/InP Quantum Dots for Telecom Applications in the 1.55 µm Wavelength Range: Wavelength Tuning, Stacking, Polarization Control, and Lasing

2006 ◽  
Vol 45 (8B) ◽  
pp. 6544-6549 ◽  
Author(s):  
Richard Nötzel ◽  
Sanguan Anantathanasarn ◽  
René P. J. van Veldhoven ◽  
Frank W. M. van Otten ◽  
Tom J. Eijkemans ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Wavelength Range ◽  
Wavelength Tuning ◽  
Polarization Control ◽  
Self Assembled ◽  
Inp Quantum Dots

Low-density InP-based quantum dots emitting around the 1.5 μm telecom wavelength range

2014 ◽  
Vol 104 (2) ◽  
pp. 022113 ◽  
Author(s):  
M. Yacob ◽  
J. P. Reithmaier ◽  
M. Benyoucef
Keyword(s):  
Quantum Dots ◽  
Wavelength Range ◽  
Low Density ◽  
Telecom Wavelength
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