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Manipulating electron quantum 1D channels is an important element in the field of quantum information due to their ballistic and phase coherence properties. In GaAs and graphene based two dimensional gas systems, these edge channels have…

Mesoscale and Nanoscale Physics · Physics 2025-11-04 Won Beom Choi , Myungjin Jeon , K. Watanabe , T. Taniguchi , Joonho Jang

Alzheimer's disease (AD) is the most prevalent form of dementia. Traditional methods cannot achieve efficient and accurate diagnosis of AD. In this paper, we introduce a novel method based on dynamic functional connectivity (dFC) that can…

Computer Vision and Pattern Recognition · Computer Science 2020-06-25 Xingwei An , Yutao Zhou , Yang Di , Dong Ming

Alzheimer's disease (AD) is a neurodegenerative disorder that affects more than seven million people in the United States alone. AD currently has no cure, but there are ways to potentially slow its progression if caught early enough. In…

Computer Vision and Pattern Recognition · Computer Science 2026-04-09 Mahdi Moghaddami , Mohammad-Reza Siadat , Austin Toma , Connor Laming , Huirong Fu

Parkinson's disease (PD) and Alzheimer's disease (AD) are the two most prevalent and incurable neurodegenerative diseases (NDs) worldwide, for which early diagnosis is critical to delay their progression. However, the high dimensionality of…

Computer Vision and Pattern Recognition · Computer Science 2026-04-02 Chengjia Liang , Zhenjiong Wang , Chao Chen , Ruizhi Zhang , Songxi Liang , Hai Xie , Haijun Lei , Zhongwei Huang

We investigate the way that the degenerate manifold of midgap edge states in quasicircular graphene quantum dots with zig-zag boundaries supports, under free-magnetic-field conditions, strongly correlated many-body behavior analogous to the…

Mesoscale and Nanoscale Physics · Physics 2016-09-08 Igor Romanovsky , Constantine Yannouleas , Uzi Landman

Graphene quantum dots are attractive candidates for solid-state quantum bits. In fact, the predicted weak spin-orbit and hyperfine interaction promise spin qubits with long coherence times. Graphene quantum dot devices have been extensively…

Electrostatic confinement of charge carriers in bilayer graphene provides a unique platform for carbon-based spin, charge or exchange qubits. By exploiting the possibility to induce a band gap with electrostatic gating, we form a versatile…

We report a systematic empirical study of nanoparticle internalization into cells via non-specific pathways. The nanoparticles were comprised of commercial quantum dots (QDs) that were highly visible under a fluorescence confocal…

Biological Physics · Physics 2010-06-30 T A Kelf , V K A Sreenivasan , J Sun , E J Kim , E M Goldys , A V Zvyagin

The combination of wide-band gap semiconductors like zinc oxide (ZnO) and graphene quantum dots (GQDs) is a promising strategy to tune optoelectronic properties of GQDs and to develop new functionalities. Here we report on a theoretical…

Mesoscale and Nanoscale Physics · Physics 2023-04-26 Ivan Shtepliuk , Rositsa Yakimova

We study the optical properties of hydrogen passivated silicon, germanium and mixed Ge/Si core/shell quantum dots (QDs) using high accuracy Density Functional Theory (DFT) and time-dependent DFT (TDFT). We employ the hybrid DFT functional…

Mesoscale and Nanoscale Physics · Physics 2016-04-19 Shanawer Niaz , Aristides D. Zdetsis , Manzoor Ahmad Badar , Safdar Hussain , Imran Sadiq , Muhammad Aslam Khan

In this paper, we perform a systematic study on the electronic, magnetic, and transport properties of the hexagonal graphene quantum dots (GQDs) with armchair edges in the presence of a charged impurity using two different configurations:…

Mesoscale and Nanoscale Physics · Physics 2020-06-24 Mustafa Polat , Hâldun Sevinçli , A. D. Güçlü

Parkinson's disease (PD) is a common neurodegenerative disorder that severely diminishes patients' quality of life. Its global prevalence has increased markedly in recent decades. Current diagnostic workflows are complex and heavily reliant…

Computer Vision and Pattern Recognition · Computer Science 2026-03-12 Shuai Shao , Yan Wang , Shu Jiang , Shiyuan Zhao , Di Yang , Jiangtao Wang , Yutong Bai , Jianguo Zhang

Over the past two decades, epitaxial semiconductor quantum dots (QDs) have demonstrated very promising properties as sources of single photons and entangled photons on-demand. Among different growth methods, droplet etching epitaxy has…

Graph neural network (GNN) models are increasingly being used for the classification of electroencephalography (EEG) data. However, GNN-based diagnosis of neurological disorders, such as Alzheimer's disease (AD), remains a relatively…

Neurons and Cognition · Quantitative Biology 2023-12-21 Dominik Klepl , Fei He , Min Wu , Daniel J. Blackburn , Ptolemaios G. Sarrigiannis

The structure stability and electronic properties of edge carboxylated hexagonal and triangular graphene quantum dots are investigated by using density functional theory. The calculated binding energies show that the hexagonal clusters with…

Mesoscale and Nanoscale Physics · Physics 2018-03-14 Hazem Abdelsalam , Hanan Elhaes , Medhat A. Ibrahim

We study the spectral properties of electron quantum dots (QDs) confined in 2D parabolic harmonic oscillator influenced by external uniform electrical and magnetic fields together with an Aharonov-Bohm (AB) flux field. We use the…

Mesoscale and Nanoscale Physics · Physics 2012-09-26 Sameer M. Ikhdair , Majid Hamzavi , Ramazan Sever

Quantum Graph Neural Networks (QGNNs) represent a novel fusion of quantum computing and Graph Neural Networks (GNNs), aimed at overcoming the computational and scalability challenges inherent in classical GNNs that are powerful tools for…

Parkinson's disease (PD) affects over ten million people worldwide. Although temporal interference (TI) and deep brain stimulation (DBS) are promising therapies, inter-individual variability limits empirical treatment selection, increasing…

Neurons and Cognition · Quantitative Biology 2026-04-01 Siyuan Du , Siyi Li , Shuwei Bai , Ang Li , Haolin Li , Mingqing Xiao , Yang Pan , Dongsheng Li , Weidi Xie , Yanfeng Wang , Ya Zhang , Chencheng Zhang , Jiangchao Yao

In this paper, optical and electronic properties of diamond shaped graphene quantum dots (DQDs) have been studied by employing large-scale electron-correlated calculations. The computations have been performed using the \pi-electron…

Mesoscale and Nanoscale Physics · Physics 2015-11-16 Tista Basak , Himanshu Chakraborty , Alok Shukla

In relativistic physics, both atomic collapse in heavy nucleus and Hawking radiation in black hole are predicted to occur through Klein tunneling process that couples particles and antiparticles. Recently, atomic collapse states (ACSs) were…

Mesoscale and Nanoscale Physics · Physics 2024-03-08 Qi Zheng , Yu-Chen Zhuang , Ya-Ning Ren , Chao Yan , Qing-Feng Sun , Lin He