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Search for "sensing" in Full Text gives 480 result(s) in Beilstein Journal of Nanotechnology. Showing first 200.

Modeling a multiple-chain emeraldine gas sensor for NH3 and NO2 detection

  • Hana Sustkova and
  • Jan Voves

Beilstein J. Nanotechnol. 2022, 13, 721–729, doi:10.3762/bjnano.13.64

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  • Hana Sustkova Jan Voves Faculty of Electrical Engineering, Czech Technical University in Prague, Technicka 2, Prague 6, Czech Republic 10.3762/bjnano.13.64 Abstract This paper describes atomistic device models of a multiple-chain polyaniline (PANI) gas sensing component, utilizing the non
  • it shows a resistance change when gas molecules are in the vicinity of the chain. Interesting for this application could be the detection of NH3 or NO2 [5]. Mechanism of Gas Sensing When gas molecules interact with the PANI chain, the resistance of the bulk material changes. For example, ammonia gas
  • nitrogen dioxide containing a flexible PANI thin film sensing area deposited on interleaved electrodes were produced by Posta et al. [13] and by Kroutil and co-workers [7]. In the experiments of Posta and Kroutil, the gas sensors for ammonia and nitrogen dioxide were exposed for 20 min to synthetic air
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Published 26 Jul 2022

Tunable high-quality-factor absorption in a graphene monolayer based on quasi-bound states in the continuum

  • Jun Wu,
  • Yasong Sun,
  • Feng Wu,
  • Biyuan Wu and
  • Xiaohu Wu

Beilstein J. Nanotechnol. 2022, 13, 675–681, doi:10.3762/bjnano.13.59

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  • energy conversion, while narrow-band absorbers [9][10][11][12] have great potential in sensing and monochromatic light detecting. An example is the application of narrow-band absorbers in refractive index sensing [13]. When the absorbers are surrounded by gas or liquid, the resonance wavelength will
  • shift as the background refractive index changes [14]. Narrow-band absorbers have attracted attention in practical applications due to the absorption with high quality factor (Q-factor), which is beneficial to improve the sensing performance. Up to now, many strategies for improving the Q-factor have
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Published 19 Jul 2022

Effects of substrate stiffness on the viscoelasticity and migration of prostate cancer cells examined by atomic force microscopy

  • Xiaoqiong Tang,
  • Yan Zhang,
  • Jiangbing Mao,
  • Yuhua Wang,
  • Zhenghong Zhang,
  • Zhengchao Wang and
  • Hongqin Yang

Beilstein J. Nanotechnol. 2022, 13, 560–569, doi:10.3762/bjnano.13.47

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  • roughness. Cytoskeletal microfilaments of prostate cancer cells respond to changes in substrate stiffness We further considered how the role of cell sensing substrates makes cancer cells more capable of migrating on stiff substrates. The distribution and content of F-actin within the cells was examined
  • imaging of the cell membrane. We observed that prostate cancer cells exhibit a strong migration ability by sensing changes in the extracellular environment through actin polymerization and filamentous pseudopods. This is because the role of actin polymerisation in cell adhesion structure formation
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Published 28 Jun 2022

Detection and imaging of Hg(II) in vivo using glutathione-functionalized gold nanoparticles

  • Gufeng Li,
  • Shaoqing Li,
  • Rui Wang,
  • Min Yang,
  • Lizhu Zhang,
  • Yanli Zhang,
  • Wenrong Yang and
  • Hongbin Wang

Beilstein J. Nanotechnol. 2022, 13, 549–559, doi:10.3762/bjnano.13.46

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  • University, Waurn Ponds, Victoria 3216, Australia 10.3762/bjnano.13.46 Abstract The optical and biological properties of functionalized gold nanoparticles (GNPs) have been widely used in sensing applications. GNPs have a strong binding ability to thiol groups. Furthermore, thiols are used to bind functional
  • biocompatibility, large specific surface area, and remarkable photoelectric properties [1][2][3]. Among them, gold nanoparticles (GNPs) have been frequently employed for drug delivery, sensing, imaging, and photodynamic therapy owing to their high extinction coefficient, distinct optical properties, excellent
  • cancer cells. In another work, Basu et al. designed a novel sensing system using DNA-functionalized GNPs. GNPs have a strong binding affinity to phosphate and sugar groups in DNA [20]. The combined GNPs-DNA has unique physicochemical properties and was used to detect Mg2+. Furthermore, Liu et al
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Published 23 Jun 2022

Zinc oxide nanostructures for fluorescence and Raman signal enhancement: a review

  • Ioana Marica,
  • Fran Nekvapil,
  • Maria Ștefan,
  • Cosmin Farcău and
  • Alexandra Falamaș

Beilstein J. Nanotechnol. 2022, 13, 472–490, doi:10.3762/bjnano.13.40

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Published 27 May 2022

A chemiresistive sensor array based on polyaniline nanocomposites and machine learning classification

  • Jiri Kroutil,
  • Alexandr Laposa,
  • Ali Ahmad,
  • Jan Voves,
  • Vojtech Povolny,
  • Ladislav Klimsa,
  • Marina Davydova and
  • Miroslav Husak

Beilstein J. Nanotechnol. 2022, 13, 411–423, doi:10.3762/bjnano.13.34

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  • composed by seven different conductive sensors with composite sensing layers are measured and analyzed using machine learning. Statistical tools, such as principal component analysis and linear discriminant analysis, are used as dimensionality reduction methods. Five different classification methods
  • powerful tool to address the abovementioned drawbacks is the implementation of a multisensor array combined with appropriate pattern recognition and classification tools [6]. Recently, classification in gas sensing applications has been carried out by principal component analysis to identify the difference
  • (carbon nanotubes (CNT), SnO2, TiO2) materials in a gas sensors based on nanocomposite layers with good sensitivity, temperature stability, reversibility, which was operating at room temperature. Herein, we extended our study by applying other nanocomposite sensing layers, namely PANI/ZnO, PANI/WO3
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Published 27 Apr 2022

Micro- and nanotechnology in biomedical engineering for cartilage tissue regeneration in osteoarthritis

  • Zahra Nabizadeh,
  • Mahmoud Nasrollahzadeh,
  • Hamed Daemi,
  • Mohamadreza Baghaban Eslaminejad,
  • Ali Akbar Shabani,
  • Mehdi Dadashpour,
  • Majid Mirmohammadkhani and
  • Davood Nasrabadi

Beilstein J. Nanotechnol. 2022, 13, 363–389, doi:10.3762/bjnano.13.31

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Published 11 Apr 2022

Interfacial nanoarchitectonics for ZIF-8 membranes with enhanced gas separation

  • Season S. Chen,
  • Zhen-Jie Yang,
  • Chia-Hao Chang,
  • Hoong-Uei Koh,
  • Sameerah I. Al-Saeedi,
  • Kuo-Lun Tung and
  • Kevin C.-W. Wu

Beilstein J. Nanotechnol. 2022, 13, 313–324, doi:10.3762/bjnano.13.26

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  • ]. Given these structural properties, MOFs are widely applied to gas storage [18], gas/liquid separation [18][19][20], energy storage [21][22][23], sensing [24], catalysis [25], electrochemistry [26], and bio-related fields [27]. Zeolitic imidazolate frameworks (ZIFs), a subclass of MOFs, comprise
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Published 22 Mar 2022

Impact of device design on the electronic and optoelectronic properties of integrated Ru-terpyridine complexes

  • Max Mennicken,
  • Sophia Katharina Peter,
  • Corinna Kaulen,
  • Ulrich Simon and
  • Silvia Karthäuser

Beilstein J. Nanotechnol. 2022, 13, 219–229, doi:10.3762/bjnano.13.16

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  • . Molecular engineering is required to design and assemble molecules or supramolecular systems with specific functions and to ensure the device performance. Favorable molecular systems are capable of performing electronic operations such as data storage, rectification, sensing or switching. In this regard
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Published 15 Feb 2022

Engineered titania nanomaterials in advanced clinical applications

  • Padmavati Sahare,
  • Paulina Govea Alvarez,
  • Juan Manual Sanchez Yanez,
  • Gabriel Luna-Bárcenas,
  • Samik Chakraborty,
  • Sujay Paul and
  • Miriam Estevez

Beilstein J. Nanotechnol. 2022, 13, 201–218, doi:10.3762/bjnano.13.15

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  • nanostructures such as nanotubes and nanowires have been utilized in photoelectrochemical sensing for the rapid and precise identification of biological analytes at low concentrations, useful for clinical diagnosis. These nanostructures have been employed for sensing humidity, oxygen, and hydrogen, inclusive of
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Published 14 Feb 2022

Piezoelectric nanogenerator for bio-mechanical strain measurement

  • Zafar Javed,
  • Lybah Rafiq,
  • Muhammad Anwaar Nazeer,
  • Saqib Siddiqui,
  • Muhammad Babar Ramzan,
  • Muhammad Qamar Khan and
  • Muhammad Salman Naeem

Beilstein J. Nanotechnol. 2022, 13, 192–200, doi:10.3762/bjnano.13.14

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  • can also be used under mats and floors so the pressure due to footsteps can be utilized as a source to generate energy [13]. Besides these, piezoelectric sensors can also be used for sensing human body motion and monitoring physical health parameters, such as electrocardiograms [14][15][16][17][18][19
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Published 07 Feb 2022

A photonic crystal material for the online detection of nonpolar hydrocarbon vapors

  • Evgenii S. Bolshakov,
  • Aleksander V. Ivanov,
  • Andrei A. Kozlov,
  • Anton S. Aksenov,
  • Elena V. Isanbaeva,
  • Sergei E. Kushnir,
  • Aleksei D. Yapryntsev,
  • Aleksander E. Baranchikov and
  • Yury A. Zolotov

Beilstein J. Nanotechnol. 2022, 13, 127–136, doi:10.3762/bjnano.13.9

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  • array with a sensing matrix of polydimethylsiloxane, have been determined by using scanning electron microscopy and by the results of specular reflectance spectroscopy based on the Bragg–Snell law. A new approach has been proposed for the application of this sensor in chemical analysis for the
  • crystal structures for chemical sensing of organic solvents. Funding A part of this work was performed under a state assignment on basic scientific research for the Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences (Moscow, Russia) using the equipment of the Joint
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Published 25 Jan 2022

Tin dioxide nanomaterial-based photocatalysts for nitrogen oxide oxidation: a review

  • Viet Van Pham,
  • Hong-Huy Tran,
  • Thao Kim Truong and
  • Thi Minh Cao

Beilstein J. Nanotechnol. 2022, 13, 96–113, doi:10.3762/bjnano.13.7

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  • vacancy defects (OVs) [15][16]. Therefore, SnO2 is considered a potential material in various technological fields such as catalysis, optoelectronic devices, rechargeable lithium batteries, electrocatalysis, photocatalysis, solar energy conversion, and gas sensing [17][18][19][20][21][22][23][24]. In the
  • photocatalysts and a cost-effective, environmentally benign way through heat treatment in different atmospheres [39]. Combining noble metals with SnO2, such as in Au/SnO2 [78] or Pd/SnO2 [79], is an advanced approach yielding an effective performance for gas sensing. However, There is only one report by Bui et
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Published 21 Jan 2022

Sputtering onto liquids: a critical review

  • Anastasiya Sergievskaya,
  • Adrien Chauvin and
  • Stephanos Konstantinidis

Beilstein J. Nanotechnol. 2022, 13, 10–53, doi:10.3762/bjnano.13.2

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Published 04 Jan 2022

Enhancement of the piezoelectric coefficient in PVDF-TrFe/CoFe2O4 nanocomposites through DC magnetic poling

  • Marco Fortunato,
  • Alessio Tamburrano,
  • Maria Paola Bracciale,
  • Maria Laura Santarelli and
  • Maria Sabrina Sarto

Beilstein J. Nanotechnol. 2021, 12, 1262–1270, doi:10.3762/bjnano.12.93

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  • piezoelectric and ferroelectric properties, high chemical resistance, high thermal stability, large polarization, short switching time, and mechanical flexibility. All these combined characteristics make it suitable for a wide range of advanced applications, from sensing to energy harvesting [8][9][10][11]. It
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Published 19 Nov 2021

Morphology-driven gas sensing by fabricated fractals: A review

  • Vishal Kamathe and
  • Rupali Nagar

Beilstein J. Nanotechnol. 2021, 12, 1187–1208, doi:10.3762/bjnano.12.88

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  • to be possessing better gas sensing capabilities. Fab-fracs with these salient features will help in designing the commercial gas sensors with better performance. Keywords: adsorption sites; fabricated fractal; fractal dimension; gas sensor; morphology; pore network; recovery time; response time
  • usage [5][6][7]. The objectives in gas sensing research are usually set to enhance the sensitivity (how the sensor responds to small changes when the gas environment around it changes), selectivity (if a sensor can still respond to a particular gas when many gases present), stability (how the sensor
  • metal oxide (SMO) sensors are most popular due to their low cost, simplicity, easy fabrication, and wide range of gas detection capabilities [9]. Thin films and nanostructures exhibit better sensing characteristics. Various researchers have reported structures with morphologies such as nanowires (NWs
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Published 09 Nov 2021

Self-assembly of amino acids toward functional biomaterials

  • Huan Ren,
  • Lifang Wu,
  • Lina Tan,
  • Yanni Bao,
  • Yuchen Ma,
  • Yong Jin and
  • Qianli Zou

Beilstein J. Nanotechnol. 2021, 12, 1140–1150, doi:10.3762/bjnano.12.85

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  • were used for the selective sensing of Fe3+ within cancer cells and imaging of Fe3+ [54]. Amino-acid-coordinated self-assembly. Coordination-driven self-assembly is a supramolecular self-assembly method based on metal-coordination bond formation, which has the advantages of fewer steps, fast final
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Published 12 Oct 2021

A Au/CuNiCoS4/p-Si photodiode: electrical and morphological characterization

  • Adem Koçyiğit,
  • Adem Sarılmaz,
  • Teoman Öztürk,
  • Faruk Ozel and
  • Murat Yıldırım

Beilstein J. Nanotechnol. 2021, 12, 984–994, doi:10.3762/bjnano.12.74

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  • great attention due their unique electronic, magnetic, optical, and gas sensing properties. Spinel compounds can be employed in data storage applications, lithium-ion batteries, gas sensors, and medical diagnostics [1][2]. Spinels have a cubic crystal structure with the general chemical formula AB2X4
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Published 02 Sep 2021

Uniform arrays of gold nanoelectrodes with tuneable recess depth

  • Elena O. Gordeeva,
  • Ilya V. Roslyakov,
  • Alexey P. Leontiev,
  • Alexey A. Klimenko and
  • Kirill S. Napolskii

Beilstein J. Nanotechnol. 2021, 12, 957–964, doi:10.3762/bjnano.12.72

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  • value was chosen as an optimal Ed for further experiments. According to the scheme of the NEA fabrication (Figure 1), the first Cu segment’s length (LCu1) determines the recess of NEAs relative to the template surface. In order to enhance a response time of sensing material inside AAO, LCu1 was
  • the active recessed nanoelectrodes was quantified. It was shown that 45 ± 15% of electrodes have electrical contact with the current collector. The obtained recessed NEAs are prospective for creating electrochemical sensors, in which the template sterically stabilizes the sensing material. It is
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Published 30 Aug 2021

The role of deep eutectic solvents and carrageenan in synthesizing biocompatible anisotropic metal nanoparticles

  • Nabojit Das,
  • Akash Kumar and
  • Raja Gopal Rayavarapu

Beilstein J. Nanotechnol. 2021, 12, 924–938, doi:10.3762/bjnano.12.69

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  • ), Ghaziabad 201002, India 10.3762/bjnano.12.69 Abstract Plasmonic metal nanoparticles are widely used for many applications due to their unique optical and chemical properties. Over the past decade, anisotropic metal nanoparticles have been explored for imaging, sensing, and diagnostic applications. The
  • and smartphone-based sensing applications [3][4][5]. Several other advanced sensing applications have emerged, such as battery-free and wireless devices, providing on-site results [6][7]. NIR absorption is exclusively exhibited by plasmonic anisotropic nanoparticles, enabling diagnostic imaging within
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Published 18 Aug 2021

Reducing molecular simulation time for AFM images based on super-resolution methods

  • Zhipeng Dou,
  • Jianqiang Qian,
  • Yingzi Li,
  • Rui Lin,
  • Jianhai Wang,
  • Peng Cheng and
  • Zeyu Xu

Beilstein J. Nanotechnol. 2021, 12, 775–785, doi:10.3762/bjnano.12.61

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  • also been used as training data. However, the simulation is incredibly time consuming. In this paper, we apply super-resolution methods, including compressed sensing and deep learning methods, to reconstruct simulated images and to reduce simulation time. Several molecular simulation energy maps under
  • can be used to speed up the generation of training data and vary simulation resolution for AFM machine learning. Keywords: atomic force microscopy; Bayesian compressed sensing; convolutional neural network; molecular dynamics simulation; super resolution; Introduction Atomic force microscopy methods
  • in computer vision. Super-resolution methods could be used to reconstruct a high-resolution image from a low-resolution image. There are a variety of methods in the field of super resolution. Compressed sensing (CS) and deep learning methods are two typical methods with excellent imaging performance
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Published 29 Jul 2021

Recent progress in actuation technologies of micro/nanorobots

  • Ke Xu and
  • Bing Liu

Beilstein J. Nanotechnol. 2021, 12, 756–765, doi:10.3762/bjnano.12.59

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  • has a better development prospect. Patino et al. [43] combined DNA nanoswitches with urease-powered micromotors to achieve the goal of swimming and sensing the pH value of the environment. In this study, the urease-powered micromotor served two functions. It detected changes in the pH value through
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Published 20 Jul 2021

Recent progress in magnetic applications for micro- and nanorobots

  • Ke Xu,
  • Shuang Xu and
  • Fanan Wei

Beilstein J. Nanotechnol. 2021, 12, 744–755, doi:10.3762/bjnano.12.58

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  • Micro- and nanorobots (MNRs) present challenges and prospects in the field of nanotechnology. MNRs have been a major direction of technological development and will be widely used in many fields such as biomedicine, electronic technology and sensing, and environmental remediation [1][2][3][4]. Therefore
  • avoid the reassembly of the chains. Doherty et al. [38] pointed out that superparamagnetic nanofibers could prevent the uncontrolled agglomeration of particles because the residual magnetization of this material is almost zero. They applied this technology to sensing and environmental remediation and
  • enabled actuation, control, and observation of the FMSM. In most mobile sensing applications, microrobots are driven by chemical fuels such as hydrogen peroxide (H2O2) and surfactants. In contrast, magnetic drives have good biocompatibility and external power supply. For example, a porous microelectrode
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Published 19 Jul 2021

Nanogenerator-based self-powered sensors for data collection

  • Yicheng Shao,
  • Maoliang Shen,
  • Yuankai Zhou,
  • Xin Cui,
  • Lijie Li and
  • Yan Zhang

Beilstein J. Nanotechnol. 2021, 12, 680–693, doi:10.3762/bjnano.12.54

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  • increases with pressure. The output voltage reaches a saturation value after a certain number of sensor actuations, as shown in Figure 2e. This intelligent neuromorphic sensor that mimics synaptic enhancement and memory can be used as a human skin tactile sensing solution, providing rich data for artificial
  • exercise intensity information can be obtained in real time. This is a new solution for big data sensing in sports. The mechanical energy generated by blood flow or body motion also can drive sensors for monitoring various indicators of body fluids. Pan et al. [35] proposed a self-powered blood pressure
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Published 08 Jul 2021

A review of defect engineering, ion implantation, and nanofabrication using the helium ion microscope

  • Frances I. Allen

Beilstein J. Nanotechnol. 2021, 12, 633–664, doi:10.3762/bjnano.12.52

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Published 02 Jul 2021
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