Results 91 to 100 of about 1,223,675 (304)

Enhancing Third- and Fifth-Order Nonlinearity via Tunneling in Multiple Quantum Dots

Nanomaterials, 2019
The nonlinearity of semiconductor quantum dots under the condition of low light levels has many important applications. In this study, linear absorption, self-Kerr nonlinearity, fifth-order nonlinearity and cross-Kerr nonlinearity of multiple quantum ...
Si-Cong Tian, Huan-Yu Lu, Hang Zhang, Li-Jie Wang, Shi-Li Shu, Xin Zhang, Guan-Yu Hou, Zi-Ye Wang, Cun-Zhu Tong, Li-Jun Wang   +9 more
doaj   +1 more source

Lone‐Pair‐Induced Lattice Distortion in Lead‐Free Hybrid Perovskites for High‐Performance Nanogenerators

Advanced Functional Materials, EarlyView.
A lead‐free tin‐based hybrid perovskite is designed in which stereochemically active lone‐pair electrons on tin distort the crystal lattice and break its symmetry. Blended into a flexible polymer, the material converts pressure into electricity at milliwatt‐scale power density and continues working far below freezing, powering a commercial wristwatch ...
Majid Haji Bagheri, Asif Abdullah Khan, Md Fahim Al Fattah, Mahmoud Almadhoun, Shamaila Shahzadi, Aixi Pan, Md Soyaeb Hasan, Henry Wu, Arash Aghigh, Bhawna Bhawna, François Légaré, Vivek Maheshwari, Dayan Ban   +12 more
wiley   +1 more source

Modelling the polarisation mode control of single quantum-dot emission in elliptical micro-pillar microcavities based on DBR mirror pairs using the FDTD method [PDF]

, 2004
We use the finite difference time domain method (FDTD) to investigate polarisation control of single-photon emission from single quantum dots confined in elliptical micro-pillar microcavities.
Cryan, MJ, C. J. Railton, I. J. Craddock, Rarity, JG, T. Cao, Ivanov, P, Craddock, IJ, Ho, Y-LD, Cao, T, P. S. Ivanov, Y. -L. D. Ho, Railton, CJ, M. J. Cryan, J. G. Rarity   +13 more
core   +1 more source

Intracellular distribution of nontargeted quantum dots after natural uptake and microinjection

International Journal of Nanomedicine, 2013
Leona Damalakiene,1 Vitalijus Karabanovas,2 Saulius Bagdonas,1 Mindaugas Valius,3 Ricardas Rotomskis1,21Biophotonics Group, Laser Research Center, Faculty of Physics, 2Biomedical Physics Laboratory, Institute of Oncology, 3Proteomics Center, Institute of
Damalakiene L, Karabanovas V, Bagdonas S, Valius M, Rotomskis R   +4 more
doaj  

Exciton-phonon coupling and phonon-assisted exciton relaxation dynamics in In1-xGaxP quantum dots

Nature Communications
Quantum dots leverage quantum confinement to modify the electronic structure of materials, separating electronic transitions from the composition of the corresponding bulk material. With ternary quantum dots, the composition may be varied continuously so
Beiye C. Li, Kailai Lin, Ping-Jui E. Wu, Aritrajit Gupta, Kaiyue Peng, Siddhartha Sohoni, Justin C. Ondry, Zirui Zhou, Caitlin C. Bellora, Young Jay Ryu, Stella Chariton, David J. Gosztola, Vitali B. Prakapenka, Richard D. Schaller, Dmitri V. Talapin, Eran Rabani, Gregory S. Engel   +16 more
doaj   +1 more source

Formation of uniform high-density and small-size Ge/Si quantum dots by scanning pulsed laser annealing of pre-deposited Ge/Si film

AIP Advances, 2016
The capability to fabricate Ge/Si quantum dots with small dot size and high dot density uniformly over a large area is crucial for many applications. In this work, we demonstrate that this can be achieved by scanning a pre-deposited Ge thin layer on Si ...
Hamza Qayyum, Chieh-Hsun Lu, Ying-Hung Chuang, Jiunn-Yuan Lin, Szu-yuan Chen   +4 more
doaj   +1 more source

Defect‐Mediated Inelastic Light Scattering by Infrared Phonons in Hexagonal Boron Nitride

Advanced Functional Materials, EarlyView.
Optically active defects in hexagonal boron nitride enable inelastic stimulated light scattering mediated by infrared‐active phonons, relaxing conventional Raman selection rules. Defect engineering enhances the Stokes‐conversion process and activates both TO‐ and LO‐phonon scattering channels.
Prabhdeep Singh, Bharti Garg, Maximilian Black, Masoud Taleb, Nahid Talebi   +4 more
wiley   +1 more source

Strong spin-orbit interaction, helical hole states, and spin qubits in nanowires and quantum dots [PDF]

, 2014
Semiconducting nanowires (NWs) and quantum dots (QDs) are promising platforms for spintronics and quantum computation. Great experimental and theoretical efforts have been made to continuously improve their performances, which is evident from the large ...
Klöffel, Christoph
core   +1 more source

The Iontronic Quantum Dot

Nano Letters
Semiconductor quantum dots (QDs) are key building blocks for quantum technologies with applications in quantum computation, communication, and sensing. QD device architectures rooted in conventional solid-state device fabrication paradigms are grappled with complex protocols to balance ease of realization, scalability, and transport properties.
Domenic Prete, Valeria Demontis, Valentina Zannier, Lucia Sorba, Fabio Beltram, Francesco Rossella   +5 more
openaire   +2 more sources

Theory of polaron resonance in quantum dots and quantum-dot molecules [PDF]

Journal of Applied Physics, 2007
This work presents the theory of exciton coupling to photons and longitudinal optical (LO) phonons in quantum dots (QDs) and quantum-dot molecules (QDMs). Resonant-round trips of the exciton between the ground (bright) and excited (dark or bright) states, mediated by the LO phonon, alter the decay time and yield the Rabi oscillation.
openaire   +2 more sources