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Photoluminescence excitation measurements in semi-conducting carbon nanotubes show a systematic non-resonant contribution between the well known excitonic resonances. Using a global analysis method, we were able to delineate the…

Every year, humanity loses about 1.5 million persons due to diabetic disease. Therefore continuous monitoring of diabetes is highly needed, but the conventional approach, i.e., fingertip pricking, causes mental and physical pain to the…

Signal Processing · Electrical Eng. & Systems 2024-11-19 Abdelrhman Y. Soliman , Ahmed M. Nor , Octavian Fratu , Simona Halunga , Osama A. Omer , Ahmed S. Mubark

This paper presents a novel six-axis force/torque (F/T) sensor based on inductive sensing technology. Unlike conventional strain gauge-based sensors that require direct contact and external amplification, the proposed sensor utilizes…

Robotics · Computer Science 2025-05-15 Hyun-Bin Kim , Kyung-Soo Kim

We report on the electric measurements of an individual Au nanoparticle with an ultra-high contact resistance of about $10^{19} \Omega$. The high-impedance measurements have been carried out by counting the electrons that are transferred…

Mesoscale and Nanoscale Physics · Physics 2008-03-12 An. Gruneis , M. J. Esplandiu , D. Garcia-Sanchez , A. Bachtold

Fluorescence imaging allows for non-invasively visualizing and measuring key physiological parameters like pH and dissolved oxygen. In our work, we created two ratiometric fluorescent microsensors designed for accurately tracking dissolved…

We combine the ideas of scaling theory and universal conductance fluctuations with density-functional theory to analyze the conductance properties of doped silicon nanowires. Specifically, we study the cross-over from ballistic to diffusive…

Mesoscale and Nanoscale Physics · Physics 2009-11-13 Troels Markussen , Riccardo Rurali , Antti-Pekka Jauho , Mads Brandbyge

This study aims to develop a low-cost refractometer for measuring the sucrose content of fruit juice, which is an important factor affecting human health. While laboratory-grade refractometers are expensive and unsuitable for personal use,…

Systems and Control · Electrical Eng. & Systems 2023-05-26 Zhenxing Wang , Zhenyuan Jia

We present a nanoscale color detector based on a single-walled carbon nanotube functionalized with azobenzene chromophores, where the chromophores serve as photoabsorbers and the nanotube as the electronic read-out. By synthesizing…

Materials Science · Physics 2009-03-30 Xinjian Zhou , Thomas Zifer , Bryan M. Wong , Karen L. Krafcik , Francois Leonard , Andrew L. Vance

Micro and nanoscale particles are crucial in various fields, from biomedical imaging to environmental processes. While conventional spectroscopy and microscopy methods for characterizing these particles often involve bulky equipment and…

Biological Physics · Physics 2024-11-26 Jie Liao , Maxwell Adolphson , Hangyue Li , Dipayon Kumar Sikder , Chenyang Lu , Lan Yang

We study the refractive-index sensing properties of plasmonic nanotubes with a dielectric core and ultra-thin metal shell. The few-nm thin metal shell is described by both the usual Drude model and the nonlocal hydrodynamic model to…

Optics · Physics 2013-05-07 S. Raza , G. Toscano , A. -P. Jauho , N. A. Mortensen , M. Wubs

Single-chip CMOS-based biosensors that feature microcantilevers as transducer elements are presented. The cantilevers are functionalized for the capturing of specific analytes, e.g., proteins or DNA. The binding of the analyte changes the…

Hardware Architecture · Computer Science 2011-11-09 K. -U. Kirstein , Y. Li , M. Zimmermann , C. Vancura , T. Volden , W. H. Song , J. Lichtenberg , A. Hierlemannn

In the past decade, semiconducting carbon nanotube thin films have been recognized as contending materials for wide-ranging applications in electronics, energy, and sensing. In particular, improvements in large-area flexible electronics…

Niobium disulfide (NbS2), a two-dimensional transition metal dichalcogenide with semi metallic conductivity and high surface activity, offers promising properties for electronic and sensing applications. In this study, we report a…

Materials Science · Physics 2025-07-17 P K Shihabudeen , Alex Sam , Shih-Wen Chiu , Ta-Jen Yen , Kea-Tiong Tang

In this article, a chiral plasmonic hydrogen-sensing platform using palladium-based nanohelices is demonstrated. Such 3D chiral nanostructures fabricated by nanoglancing angle deposition exhibit strong circular dichroism both experimentally…

We investigate the adsorption of the nucleic acid bases, adenine (A), guanine (G), cytosine (C), thymine (T) and uracil (U) on the outer wall of a high curvature semiconducting single-walled boron nitride nanotube (BNNT) by first principles…

Biological Physics · Physics 2014-11-20 Saikat Mukhopadhyay , S. Gowtham , Ralph H. Scheicher , Ravindra Pandey , Shashi P. Karna

We demonstrate aqueous refractive index sensing with 15 to 30 {\mu}m diameter silicon nitride microdisk resonators to detect small concentrations of Li salt. A dimpled-tapered fiber is used to couple 780 nm visible light to the microdisks,…

Mesoscale and Nanoscale Physics · Physics 2015-04-06 C. Doolin , P. Doolin , B. C. Lewis , J. P. Davis

Mechanical resonators are widely used as inertial balances to detect small quantities of adsorbed mass through shifts in oscillation frequency[1]. Advances in lithography and materials synthesis have enabled the fabrication of nanoscale…

Materials Science · Physics 2015-05-13 K. Jensen , Kwanpyo Kim , A. Zettl

In this study, we present a dual-modal AI framework based on short-wave infrared (SWIR) spectroscopy. The first modality employs a multi-wavelength SWIR imaging system coupled with convolutional neural networks (CNNs) to capture spatial…

Image and Video Processing · Electrical Eng. & Systems 2025-06-18 El Arbi Belfarsi , Henry Flores , Maria Valero

Visible and infrared photons can be detected with a broadband response via the internal photoeffect. By using plasmonic nanostructures, i.e. nanoantennas, wavelength selectivity can be introduced to such detectors through geometry-dependent…

We report on conductance measurements in carbon nanotube based double quantum dots connected to two normal electrodes and a central superconducting finger. By operating our devices as beam splitters, we provide evidence for Crossed Andreev…

Mesoscale and Nanoscale Physics · Physics 2015-05-14 L. G. Herrmann , F. Portier , P. Roche , A. Levy Yeyati , T. Kontos , C. Strunk