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Search for "sensitivity" in Full Text gives 681 result(s) in Beilstein Journal of Nanotechnology. Showing first 200.
Pulsed laser in liquid grafting of gold nanoparticle–carbon support composites
Beilstein J. Nanotechnol. 2025, 16, 349–361, doi:10.3762/bjnano.16.26
- ][23]. Element-specific relative sensitivity factors resulting from photoemission cross sections and analyzer transmission of photoelectrons were used to determine atom percentages [22]. The measured O 1s atom percentages for each component were used to constrain the respective C 1s peak fits. The
- ) using instrument-specific atomic sensitivity factors. X-ray diffraction (XRD) measurements were conducted at the Chemical Analysis Lab at the Rochester Institute of Technology using a Bruker D8 ADVANCE diffractometer with Cu Kα radiation (40 kV and 40 mA). The configuration included a 0.6 mm primary
- . Inductively coupled plasma mass spectrometry measurements were conducted at the University of Rochester Medical Center. A Perkin Elmer NexION 2000 system featuring multielement detection and parts per billion/parts per trillion sensitivity was used. The gold nanoparticle–carbon fiber paper composites were
Enhancing mechanical properties of chitosan/PVA electrospun nanofibers: a comprehensive review
Beilstein J. Nanotechnol. 2025, 16, 286–307, doi:10.3762/bjnano.16.22
- , including irregular fluid jet movement, variations in surface tension, and sensitivity to external parameters such as temperature, humidity, and airflow. These factors can disrupt the uniformity of the fiber formation. When the fiber jets are drawn in the direction of the electric field force, the polymer
Emerging strategies in the sustainable removal of antibiotics using semiconductor-based photocatalysts
Beilstein J. Nanotechnol. 2025, 16, 264–285, doi:10.3762/bjnano.16.21
- TC, with an efficiency of approximately 96%, which is 1.56 times higher than that of pure TiO2 photocatalysts. Zinc oxide-based materials Zinc oxide (ZnO) is another widely used semiconductor material that exhibits enhanced sensitivity to ultraviolet (UV) light. It possesses a substantial surface
Recent advances in photothermal nanomaterials for ophthalmic applications
Beilstein J. Nanotechnol. 2025, 16, 195–215, doi:10.3762/bjnano.16.16
- ophthalmology because of their compatibility with the high transmittance characteristics of ocular tissues, allowing for a more sensitive response to various types of incident light [9][10][11]. This sensitivity facilitates diverse therapeutic effects and offers solutions to complex ophthalmic diseases. In
- diminish contrast sensitivity and potentially contribute to impaired vision quality, adversely affecting the patient’s quality of life and leading to psychological issues [121]. Hyaluronic acid (HA)-coated AuNPs accumulate on human vitreous opacities obtained through vitrectomy [52]. When exposed to
- ), fluorescence imaging (FI), scanning laser ophthalmoscopy (SLO), and fundus photography have significantly changed the diagnosis and monitoring of ocular diseases [174][175][176]. OCT is the most prevalent ophthalmic imaging technique, providing high-resolution and high-sensitivity imaging; however, the test
Modeling and simulation of carbon-nanocomposite-based gas sensors
Beilstein J. Nanotechnol. 2025, 16, 90–96, doi:10.3762/bjnano.16.9
- using the nanocomposite materials which in turn enhances the sensitivity of the gas sensors. Keywords: CO gas; COMSOL Multiphysics; gas sensor; surface coverage; SWCNT/PEDOT:PSS; Introduction The field of nanotechnology has brought significant advancements in various scientific and engineering
- effective, often face limitations such as poor sensitivity, slow response times, and high-power consumption. These limitations restrict their widespread use and make the development of more efficient, sensitive, and cost-effective CO gas-sensing solutions necessary. The unique properties of carbon
- ), and volatile organic compounds (VOCs) in the atmosphere and can be used for industrial safety, security, and defense [2]. Gas sensors consisting of metal oxide possess several disadvantages, such as high-power consumption, sensor stability, and low sensitivity. To reduce the cost of sensors
Advanced atomic force microscopy techniques V
Beilstein J. Nanotechnol. 2025, 16, 54–56, doi:10.3762/bjnano.16.6
- characterize SiOx films as thin as 5 nm by the so-called surface-sensitive mode, in contrast to the established contact mode, which provides much less surface sensitivity. A particular strength for the study of materials is the combination of different measurement modes. Rothe et al. extend the
Mechanistic insights into endosomal escape by sodium oleate-modified liposomes
Beilstein J. Nanotechnol. 2024, 15, 1667–1685, doi:10.3762/bjnano.15.131
- environment, which is representative of endosomal conditions. In contrast, at pH 7.4, the fusion percentage for SO was significantly lower, peaking at only 10% at the highest concentration, highlighting the pH-sensitivity of SO’s fusogenic effect. A similar trend was observed for the positive control, DOPE
Facile synthesis of size-tunable L-carnosine-capped silver nanoparticles and their role in metal ion sensing and catalytic degradation of p-nitrophenol
Beilstein J. Nanotechnol. 2024, 15, 1576–1592, doi:10.3762/bjnano.15.124
- detection (LODs) of Cd2+, Pb2+, As3+, and Cr3+ were 141.79, 131.33, 215.35, and 245.49 ppb, respectively. These values suggest a competitive sensitivity compared to other nanoparticle-based sensors reported in the literature. Additionally, the catalytic activity of ʟ-car-AgNPs was studied regarding the
Electrochemical nanostructured CuBTC/FeBTC MOF composite sensor for enrofloxacin detection
Beilstein J. Nanotechnol. 2024, 15, 1522–1535, doi:10.3762/bjnano.15.120
- capacity, and an acceptable efficacy of the electron transfer, Cu3(BTC)2 exhibited a good sensitivity to 2,4-dichlorophenol in the range from 0.04 to 1.00 μM with a limit of detection (LOD) of 9 nM in differential pulse voltammetry measurements. Moreover, the combination of metal oxides and MOFs showed better
- ][47][48][49]. Additionally, the sensitivity of the sensor was calculated to be 56.14 µA/µM. Anti-interference study This study aimed to investigate the influence of organic and inorganic substances on the performance of a sensor by evaluating the changes in the ENR signal when these substances were
Strain-induced bandgap engineering in 2D ψ-graphene materials: a first-principles study
Beilstein J. Nanotechnol. 2024, 15, 1440–1452, doi:10.3762/bjnano.15.116
- slight reduction in the lattice parameters, was found to be sufficient for a metal-to-semiconductor transition in ψ-graphone (Figure 3). These results indicate the extreme sensitivity of the ψ-graphone crystal structure to mechanical strain (tensile or compressive). As the magnitude of strain increases
- , at a negative mechanical strain of around −14%, a bandgap of 0.2 eV becomes apparent in the band structure of ψ-graphene, changing it from zero-bandgap to a narrow-bandgap semiconductor. These results signify ψ-graphene’s low bandgap sensitivity to mechanical strain. Enhanced sensitivity to
- mechanical strain was observed in ψ-graphone, a zero-bandgap material. We found that the bandgap of ψ-graphone can be opened even under a slight strain of −1% or +1%, highlighting the remarkable sensitivity of ψ-graphone towards mechanical deformation. In contrast, ψ-graphane is a direct-bandgap material
Investigation of Hf/Ti bilayers for the development of transition-edge sensor microcalorimeters
Beilstein J. Nanotechnol. 2024, 15, 1353–1361, doi:10.3762/bjnano.15.108
- based on a transition-edge sensor (TES) are the most common concept [5]. The developed detectors have an energy resolution of the order of a few electronvolts, which is insufficient for many important applications. At present, the work on increasing the sensitivity of TES-based microcalorimeters is
- ongoing, and the choice of a superconductor material plays an important role here [6][7]. An increase in sensitivity can be achieved by lowering the critical temperature TC below 100 mK. A known solution is two- or multilayer films of various superconductors and normal metals to suppress the transition
- sensitivity of the microcalorimeter. Our Hf films demonstrate superconductivity at half of the thickness of Ir films [12], allowing for the reduction of the detector volume. Moreover, hafnium is inexpensive in comparison with iridium. Another point is that the technology of Hf deposition, developed in our
Nanoarchitectonics with cetrimonium bromide on metal nanoparticles for linker-free detection of toxic metal ions and catalytic degradation of 4-nitrophenol
Beilstein J. Nanotechnol. 2024, 15, 1312–1332, doi:10.3762/bjnano.15.106
- laborious and requires precious metals such as palladium and platinum as catalysts [20]. Colorimetric detection methods have attracted attention because of their advantages, including simplicity, sensitivity, visualization, and real-time detection, while other methods often require expensive instrumentation
- did not detect any metal ions. A subtle change in capping concentration on AuNR1 and AuNR2 was observed due to their length (Table 1). The change in concentration or size of nanorods ultimately affects the sensitivity towards metal ion detection. The metal selectivity was observed for all metal ions
New design of operational MEMS bridges for measurements of properties of FEBID-based nanostructures
Beilstein J. Nanotechnol. 2024, 15, 1273–1282, doi:10.3762/bjnano.15.103
- nanostructures. Experimenting at the nanoscale requires instruments with sufficient resolution and sensitivity to measure various properties of nanostructures. Such measurements (regardless of the nature of the quantities being measured) are particularly problematic in the case of free-standing nanostructures
Functional morphology of cleaning devices in the damselfly Ischnura elegans (Odonata, Coenagrionidae)
Beilstein J. Nanotechnol. 2024, 15, 1260–1272, doi:10.3762/bjnano.15.102
- role in maintaining olfactory acuity. Böröczky et al. [19] demonstrated that antennal grooming removes not only foreign chemicals but also excess native cuticular lipids that may interfere with olfaction, thereby maintaining the olfactory sensitivity of the antennae. In insects, body cleaning devices
Dual-functionalized architecture enables stable and tumor cell-specific SiO2NPs in complex biological fluids
Beilstein J. Nanotechnol. 2024, 15, 1238–1252, doi:10.3762/bjnano.15.100
- greater intensity for the SiO2NPs-ZW-FO (Figure 1g). This reduction indicates that the functionalization process was successful and that folate remained active and could bind to the receptor. Based on the analytical curve (R2 = 0.9997 and sensitivity = 73800.9, arbitrary fluorescence units per mg·mL–1
Synthesis, characterization and anticancer effect of doxorubicin-loaded dual stimuli-responsive smart nanopolymers
Beilstein J. Nanotechnol. 2024, 15, 1189–1196, doi:10.3762/bjnano.15.96
- was highest at 41 °C and pH 7.4 (Figure 4B). The temperature and pH sensitivity eliminates the need for other external stimuli. The time-dependent DOX release experiments conducted here under different conditions demonstrated that the dual response of the SNPs may improve the DD performance compared
Direct electron beam writing of silver using a β-diketonate precursor: first insights
Beilstein J. Nanotechnol. 2024, 15, 1117–1124, doi:10.3762/bjnano.15.90
- that was found in the deposit, despite the large number of carbon atoms in the ligands, was attributed to the thermodynamically favorable release of CO2 upon ligand cleavage [31]. All successfully tested silver carboxylates exhibit a generally high reactivity and sensitivity upon electron beam impact
- very high sensitivity with respect to electron beam impact are observed during dissociation with the weakly focused beam of a thermal electron emitter. However, for the first time, sufficient vertical growth rates in combination with high fidelity were achieved for a tightly focused electron beam
- dwell time of 1 μs. These parameters resulted in an overall deposition time of 21 min 17 s and in a beam velocity of approximately 0.15 μm per minute to match the observed vertical growth rate. The typical result is shown in Figure 3c. As a consequence of the large electron sensitivity, a significant
Unveiling the potential of alginate-based nanomaterials in sensing technology and smart delivery applications
Beilstein J. Nanotechnol. 2024, 15, 1077–1104, doi:10.3762/bjnano.15.88
- , Cairo 11727, Egypt Anastro Laboratory, Institute of Basic Science, Changwon National University, Changwon 51140, Republic of Korea 10.3762/bjnano.15.88 Abstract Sensors are applied to many fields nowadays because of their high sensitivity, low cost, time-saving, user-friendly, and excellent selectivity
- nanoparticles have demonstrated enormous advantages for sensing applications. First, alginate-based nanoparticles have a high surface area-to-volume ratio. This feature allows for increased interaction with the target analyte, leading to enhanced sensitivity and detection capabilities. Additionally, alginate
- become known as a promising tool for sensing applications in recent years [95]. With their large surface area, alginate nanoparticles provide space for the immobilization of sensing elements, allowing for enhanced sensitivity and selectivity [96]. Additionally, alginate nanoparticles possess excellent
Signal generation in dynamic interferometric displacement detection
Beilstein J. Nanotechnol. 2024, 15, 1070–1076, doi:10.3762/bjnano.15.87
- a reflectivity of Rf = 0.04. The fourth end of the 3 dB coupler is connected to the detector, which is a photoreceiver (model HBPR-200M-30K-SI-FC, FEMTO Messtechnik, Berlin, Germany) converting the incoming light power into a voltage signal. The photoreceiver allows for high-sensitivity low-noise
- ) = 0. Note, that the origin of the d-axis is fixed at the fiber end. The interferometer yields maximum sensitivity for d = d0 as explained in the text. Fit of the model for the interferometer signal voltage Vsig according to Equation 6 to experimental data. The cantilever excitation piezo voltage
Effect of wavelength and liquid on formation of Ag, Au, Ag/Au nanoparticles via picosecond laser ablation and SERS-based detection of DMMP
Beilstein J. Nanotechnol. 2024, 15, 1054–1069, doi:10.3762/bjnano.15.86
- stability attributed to Au, and increased SERS efficiency, making them particularly advantageous for long-term applications with heightened sensitivity. These enhancements are due to synergistic effects, where the integrated properties of the metals surpass those of the individual elements. In the initial
- sensitivity of the optimized FP SERS substrate was further examined at 325 nm with various concentrations of MS and DMMP ranging from 100 mM to 100 µM, as depicted in Figure 11c and Figure 11d. The leading prominent peaks of MS at 809 cm−1 and DMMP at 714 cm−1 were observed at the lowest concentration of 100
Bolometric IR photoresponse based on a 3D micro-nano integrated CNT architecture
Beilstein J. Nanotechnol. 2024, 15, 1030–1040, doi:10.3762/bjnano.15.84
- attractive options for non-cryogenic IR microbolometer and thermal detection technology. The sensitivity of a bolometer is quantified by its responsivity, which is given by the expression [11]: where ΔV is the corresponding voltage change, ΔP represents the incident power on the active detection area, Ibias
- temperature T0 = 20 °C, α is the TCR, and T is the temperature. The slope of R(T) in Figure 6 is ΔR/ΔT = R0·TCR. The TCR can be calculated as: This equation quantifies how a device’s resistance changes with temperature, providing valuable information about temperature sensitivity. The TCRs for sample 1 and
Entry of nanoparticles into cells and tissues: status and challenges
Beilstein J. Nanotechnol. 2024, 15, 1017–1029, doi:10.3762/bjnano.15.83
- imaging (i.e., positron emission tomography (PET), single-photon emission computed tomography (SPECT), optical/fluorescence, magnetic resonance imaging (MRI), computed tomography (CT; using X-ray) and ultrasound imaging), and the spatial resolution, depth of imaging, sensitivity, and advantages
Recent progress on field-effect transistor-based biosensors: device perspective
Beilstein J. Nanotechnol. 2024, 15, 977–994, doi:10.3762/bjnano.15.80
- to detect a wide range of biomolecules, such as proteins, DNA, and antibodies. This article presents a comprehensive review of advancements in the architectures of FET-based biosensors aiming to enhance device performance in terms of sensitivity, detection time, and selectivity. The review
- good sensitivity detection via a label-free procedure, real-time electrical signal in situ amplification, and cost-effective mass production, achieved through microelectronic manufacturing processes and a small size for portable point-of-care testing [34][35]. Additionally, the application of
- from researchers due to their desirable properties and advantages, including low cost, label-free operation, high sensitivity, robustness, low power consumption, and a straightforward fabrication process based on CMOS technology [47][48]. A field-effect transistor-based biosensor comprises a
Identification of structural features of surface modifiers in engineered nanostructured metal oxides regarding cell uptake through ML-based classification
Beilstein J. Nanotechnol. 2024, 15, 909–924, doi:10.3762/bjnano.15.75
- using the fivefold cross-validation procedure. Additionally, the model’s quality was evaluated by looking at the receiver operating characteristic (ROC) plot as well as specificity, sensitivity, and accuracy values [40][41][42]. Development of other machine learning models Calculation of descriptors and
- statistical criteria, such as concordance, specificity, and sensitivity, were examined to characterize the model (Table 2). The developed Bayesian model has a fivefold cross-validated ROC of 0.765, indicating the model’s validity. The ROC for the test set is 0.891, indicating an acceptable external validation
- result. The training set’s statistical results are summarized in Table 2, showing a strong 98% sensitivity, 86.5% specificity, and 93.2% overall concordance. Twenty uptake-promoting (UPp 1–UPp 20) and twenty uptake-impairing (UIp 1–UIp 20) structural features/fingerprints were generated by the Bayesian
Exploring surface charge dynamics: implications for AFM height measurements in 2D materials
Beilstein J. Nanotechnol. 2024, 15, 767–780, doi:10.3762/bjnano.15.64
- ], and slight changes in the reduction degree may vary the conductivity by many orders of magnitude [69], which would explain the high sensitivity of the measurements to the local reduction degree within one partially reduced rGO flake. To account for Joule dissipation, different models have been derived
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