AI Article Synopsis
- Conductance fluctuations in graphene nanoribbons (GNR) are influenced by disorder at the edges, which is usually unavoidable.
- By analyzing low-frequency noise in GNR devices, researchers found that this conductance fluctuation correlates with the density-of-states within the GNR.
- In single-layer GNR, noise shows gate-dependence peaks that align with the subband positions in the GNR's band structure, enabling a reliable method to probe its band structure electrically.
Article Abstract
Conductance fluctuation is usually unavoidable in graphene nanoribbons (GNR) due to the presence of disorder along its edges. By measuring the low-frequency noise in GNR devices, we find that the conductance fluctuation is strongly correlated with the density-of-states of GNR. In single-layer GNR, the gate-dependence of noise shows peaks whose positions quantitatively match the subband positions in the band structures of GNR. This correlation provides a robust mechanism to electrically probe the band structure of GNR, especially when the subband structures are smeared out in conductance measurement.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1021/nl1025979 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
What Are the Trends in Women's Representation Among Principal Investigators of US Clinical Trials in the Field of Genetics?
Cureus
December 2024
Department of Orthopedic Surgery, Case Western Reserve University School of Medicine, Cleveland, USA.
Introduction: Despite progress in the representation of women in the medical profession, substantial gender disparities persist in leadership roles, particularly in clinical trials. Clinical trials are crucial to evidence-based medicine, offering visibility, career advancement, and future funding opportunities for principal investigators (PIs). However, women remain underrepresented in these roles, especially in genetics.
View Article and Find Full Text PDFDynamic fluctuations in brain iron content during migraine attacks: insights from relaxometry and diffusion tensor imaging.
Front Neurol
December 2024
Department of Neurology, Headache Outpatient Clinic, Medical University of Innsbruck, Innsbruck, Austria.
Background: There is evidence that iron metabolism may play a role in the underlying pathophysiological mechanism of migraine. Studies using (=1/ ) relaxometry, a common MRI-based iron mapping technique, have reported increased values in various brain structures of migraineurs, indicating iron accumulation compared to healthy controls.
Purpose: To investigate whether there are short-term changes in during a migraine attack.
Long-term effect of repeated application of pig slurry digestate on microbial communities in arable soils.
Heliyon
January 2025
Agroécologie, French National Institute for Agriculture, Food, and Environment (INRAE), Institut Agro, Univ. Bourgogne, Univ. Bourgogne Franche-Comté, Dijon, France.
Anaerobic digestion represents an opportunity for converting organic waste (OW) into valuable products: renewable energy (biogas) and a fertilizer (digestate). However, the long-term effects of digestates on soil biota, especially microorganisms, need to be better documented to understand the impact of digestate on soil ecosystem functioning and resilience. This study assessed the cumulative effect of repeated pig slurry digestate applications on soil microbial communities over a decade, using an in-situ approach to compare digested feedstock with undigested feedstock and other fertilization treatments.
View Article and Find Full Text PDFMagnetic Resonance Imaging Study on Older Patients with Cognitive Impairment and Depression.
Curr Med Imaging
January 2025
School of Life Science and Technology, University of Electronic Science and Technology of China, Chengdu, China.
Background: Understanding brain changes in older patients with depression and their relationship with cognitive abilities may aid in the diagnosis of depression in this population. This study aimed to explore the association between brain lesions and cognitive performance in older patients with depression.
Methods: We utilized magnetic resonance imaging data from a previous study, which included older adults with and without depression.
Passive Isothermal Flexible Sensor Enabled by Smart Thermal-Regulating Aerogels.
Adv Mater
January 2025
Hangzhou Institute of Technology, Xidian University, Hangzhou, 311231, P. R. China.
Environmentally induced sensor temperature fluctuations can distort the outputs of a sensor, reducing their stability during long-term health monitoring. Here, a passive isothermal flexible sensor is proposed by using hierarchical cellulose aerogel (HCA) as the top tribonegative layer, which allows the sensor to adapt dynamic thermal environments through both radiative cooling and heat insulation. The radiative cooling effect can cool down the temperatures of a sensor in summer, while the hollow microfibers in HCA provide ultralow thermal conductivity to reduce internal heat loss in winter.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!