Ultrathin water layers on mannosylated gold nanoparticles

• Maiara A. Iriarte Alonso,
• Jorge H. Melillo,
• Silvina Cerveny,
• Yujin Tong and
• Alexander M. Bittner

Beilstein J. Nanotechnol. 2025, 16, 2183–2198, doi:10.3762/bjnano.16.151

• inorganic surfaces, usually modified with organic layers, and probed by Fourier-transform infrared spectroscopy (FTIR), vibrational sum frequency generation (VSFG), and atomic force microscopy (AFM). For VSFG and AFM, we systematically varied the relative air humidity (RH). DLS and ZP yield particle size

Microplastic pollution in Himalayan lakes: assessment, risks, and sustainable remediation strategies

• Sameeksha Rawat,
• S. M. Tauseef and
• Madhuben Sharma

Beilstein J. Nanotechnol. 2025, 16, 2144–2167, doi:10.3762/bjnano.16.148

• understanding the full contamination profile in remote ecosystems [33]. An overview of MP sampling and analysis methods is given in Figure 3. 4.2 Analytical techniques for microplastic characterization 4.2.1 Spectroscopy. One of the key methods of analyzing MPs is spectroscopy. Fourier-transform infrared (FTIR

Beyond the shell: exploring polymer–lipid interfaces in core–shell nanofibers to carry hyaluronic acid and β-caryophyllene

• Aline Tavares da Silva Barreto,
• Francisco Alexandrino-Júnior,
• Bráulio Soares Arcanjo,
• Paulo Henrique de Souza Picciani and
• Kattya Gyselle de Holanda e Silva

Beilstein J. Nanotechnol. 2025, 16, 2015–2033, doi:10.3762/bjnano.16.139

• -sectional imaging, and attenuated total reflectance with Fourier transform infrared (ATR-FTIR) spectroscopy provided compelling evidence for the successful formation of the intended core–shell structure. The resulting nanofibers exhibited surface hydrophobicity, suggesting potential for anti-adhesive

• following equation: where ΔHm0 is the melting enthalpy of fully crystalline PLA (93.1 J/g), and XPLA is the mass fraction of PLA in the fiber (Vidal et al., 2022) [68]. Fourier transform infrared spectroscopy FTIR analysis was conducted to examine the surface composition of the nanofibers and confirm core

Mechanical property measurements enabled by short-term Fourier-transform of atomic force microscopy thermal deflection analysis

• Thomas Mathias,
• Roland Bennewitz and
• Philip Egberts

Beilstein J. Nanotechnol. 2025, 16, 1952–1962, doi:10.3762/bjnano.16.136

• high-sample rate data was performed. This data was windowed into segments of data having lengths of 2N in number of data points, with N ranging from 10 to 20. These windowed segments were convolved with the Hanning window to reduce spectral leakage. For each window, a Fourier transform was calculated

• calculated Fourier transform, was carefully chosen to ensure that β in Equation 2 was much larger than 1 [22]: Fitting of the first resonant peak of the cantilever in contact with the surface during the force-versus-distance measurement thus provides the evolution of the f1, Q1, and D1 values as functions of

•  2b shows the calculated Fourier transform/power spectrum of the cantilever displacement in the out-of-contact portion of Figure 2a, that is, the data acquired from approximately 0 to 2 s of the experiment. The power spectrum clearly shows the first four oscillation modes of the cantilever, with the

Low-temperature AFM with a microwave cavity optomechanical transducer

• Ermes Scarano,
• Elisabet K. Arvidsson,
• August K. Roos,
• Erik Holmgren,
• Riccardo Borgani,
• Mats O. Tholén and
• David B. Haviland

Beilstein J. Nanotechnol. 2025, 16, 1873–1882, doi:10.3762/bjnano.16.130

• inset of Figure 6a acquired using probe 3. Although the various structures can be identified, several scanning artifacts appear in the image. In this particular experiment the probe was especially sensitive to pulse-tube vibrations. Figure 6c shows the fast-Fourier transform (FFT) of the error signal

• Δf. (a) SEM image of the second test sample. The zoomed inset highlights the area imaged with FM-AFM in (b). (c) Fast-Fourier transform of the error signal for a single scan line. The x-axis of the plot is converted to frequency through the pixel acquisition rate Δf = 112 Hz. (d) Single scan line

Self-assembly and adhesive properties of Pollicipes pollicipes barnacle cement protein cp19k: influence of pH and ionic strength

• Shrutika Sawant,
• Anne Marie Power and
• J. Gerard Wall

Beilstein J. Nanotechnol. 2025, 16, 1863–1872, doi:10.3762/bjnano.16.129

• concentration environment exhibited the highest fluorescence, though more detailed investigation using methods such as attenuated total reflectance-Fourier transform infrared (ATR-FTIR) spectroscopy or circular dichroism (CD) will be necessary to confirm an elevated β-sheet content in these fibrils. A similar

On the road to sustainability – application of metallic nanoparticles obtained by green synthesis in dentistry: a scoping review

• Lorena Pinheiro Vasconcelos Silva,
• Joice Catiane Soares Martins,
• Israel Luís Carvalho Diniz,
• Júlio Abreu Miranda,
• Danilo Rodrigues de Souza,
• Éverton do Nascimento Alencar,
• Moan Jéfter Fernandes Costa and
• Pedro Henrique Sette-de-Souza

Beilstein J. Nanotechnol. 2025, 16, 1851–1862, doi:10.3762/bjnano.16.128

• investigation of antimicrobial activity against these microorganisms indicates the potential dental applications of green-synthesized metallic nanoparticles. To characterize the green-synthesized metallic nanoparticles, the selected studies used mainly Fourier-transform infrared spectroscopy (FTIR, 36.73%; n

Current status of using adsorbent nanomaterials for removing microplastics from water supply systems: a mini review

• Nguyen Thi Nhan and
• Tran Le Luu

Beilstein J. Nanotechnol. 2025, 16, 1837–1850, doi:10.3762/bjnano.16.127

• . also confirmed that the reaction mechanisms of MPs and graphene oxide–chitosan sponges were electrostatic interactions, hydrogen bonding, and π–π interactions through Fourier-transform infrared spectroscopy and X-ray photoelectron spectroscopy measurements [69]. Integrating different types of

Electrical, photocatalytic, and sensory properties of graphene oxide and polyimide implanted with low- and medium-energy silver ions

• Josef Novák,
• Eva Štěpanovská,
• Petr Malinský,
• Vlastimil Mazánek,
• Jan Luxa,
• Ulrich Kentsch and
• Zdeněk Sofer

Beilstein J. Nanotechnol. 2025, 16, 1794–1811, doi:10.3762/bjnano.16.123

• of GO and PI. Elemental and structural changes induced by implantation were analyzed using Rutherford backscattering spectroscopy, elastic recoil detection analysis, Raman spectroscopy, Fourier-transform infrared spectroscopy, and X-ray photoelectron spectroscopy. Surface morphology was assessed via

• detection analysis (ERDA). The other analytical methods used were Raman spectroscopy, Fourier-transform infrared spectroscopy and X-ray photo-electron spectroscopy (XPS). The electrical properties were investigated by the two-point method. The photocatalytic properties were tested in a dark chamber by

• analyzed by Fourier-transform infrared spectroscopy (FTIR) [30] (Figure 8). The FTIR spectra were normalized to the signal at 715 cm−1. The spectra consist of several regions of interest, namely, the 715 cm−1 wavenumber region corresponding to C=O bonding and the 1083 cm−1 peak attributed to C–O–C

Ambient pressure XPS at MAX IV

• Mattia Scardamaglia,
• Ulrike Küst,
• Alexander Klyushin,
• Rosemary Jones,
• Jan Knudsen,
• Robert Temperton,
• Andrey Shavorskiy and
• Esko Kokkonen

Beilstein J. Nanotechnol. 2025, 16, 1677–1694, doi:10.3762/bjnano.16.118

• elsewhere [42][43] revealed an oscillatory response as highlighted by the black arrows in (Figure 8B) at the driving frequency of the gas pulses and higher harmonics. If the magnitude and phase of the Fourier transform at the fundamental frequency (i.e., 10 Hz) are extracted and plotted (Figure 8C), a clear

• position. (B) Magnitude of the Fourier transform as a function of frequency and binding energy. (C) Oscillation amplitude and phase at the fundamental frequency (10 Hz), together with the time average of the spectra. (D) Magnified oscillation amplitude. Schematic layout showing the alignment between

Prospects of nanotechnology and natural products for cancer and immunotherapy

• Jan Filipe Andrade Santos,
• Marcela Bernardes Brasileiro,
• Pamela Danielle Cavalcante Barreto,
• Ligiane Aranha Rocha and
• José Adão Carvalho Nascimento Júnior

Beilstein J. Nanotechnol. 2025, 16, 1644–1667, doi:10.3762/bjnano.16.116

• spectroscopy, TEM, DLS, X-ray diffraction (XRD), and Fourier-transform infrared (FTIR) spectroscopy, revealing a polygonal or oval morphology. To evaluate the antitumor effects, cytotoxicity assays, cellular uptake assays, apoptosis detection, ROS production, qRT-PCR, and Western blotting for gene and protein

Synthesis and antibacterial properties of nanosilver-modified cellulose triacetate membranes for seawater desalination

• Lei Wang,
• Shizhe Li,
• Kexin Xu,
• Wenjun Li,
• Ying Li and
• Gang Liu

Beilstein J. Nanotechnol. 2025, 16, 1380–1391, doi:10.3762/bjnano.16.100

• and Discussion Structure of membrane material To verify the target structure of the synthesized material, Fourier-transform infrared spectroscopy (FTIR) and nuclear magnetic resonance spectroscopy (NMR) were conducted, with the spectra depicted in Figure 1 and Figure 2, respectively. The FTIR bands

Deep-learning recognition and tracking of individual nanotubes in low-contrast microscopy videos

• Vladimir Pimonov,
• Said Tahir and
• Vincent Jourdain

Beilstein J. Nanotechnol. 2025, 16, 1316–1324, doi:10.3762/bjnano.16.96

• localization precision of the optical setup is 0.33 µm. Frames were then aligned using a template matching algorithm from the OpenCV Python library. Shade correction was applied to compensate for uneven illumination caused by the optics. Residual noise was reduced using fast Fourier transform (FFT) band-pass

Functional bio-packaging enhanced with nanocellulose from rice straw and cinnamon essential oil Pickering emulsion for fruit preservation

• Tuyen B. Ly,
• Duong D. T. Nguyen,
• Hieu D. Nguyen,
• Yen T. H. Nguyen,
• Bup T. A. Bui,
• Kien A. Le and
• Phung K. Le

Beilstein J. Nanotechnol. 2025, 16, 1234–1245, doi:10.3762/bjnano.16.91

• cast onto a mold and dried at 70 °C for 12 h. All concentrations were based on the mass of PVA. Characterization Physicochemical properties Fourier transform infrared spectroscopy (FTIR) spectra were recorded in the range of 4000–500 cm−1 using a Bruker ALPHA II spectrometer (Germany) at a spectral

Chitosan nanocomposite containing rotenoids: an alternative bioinsecticidal approach for the management of Aedes aegypti

• Maria A. A. Bertonceli,
• Vitor D. C. Cristo,
• Ivo J. Vieira,
• Francisco J. A. Lemos,
• Arnoldo R. Façanha,
• Raimundo Braz-Filho,
• Gustavo V. T. Batista,
• Luis G. M. Basso,
• Sérgio H. Seabra,
• Thalya S. R. Nogueira,
• Felipe F. Moreira,
• Arícia L. E. M. Assis,
• Antônia E. A. Oliveira and
• Kátia V. S. Fernandes

Beilstein J. Nanotechnol. 2025, 16, 1197–1208, doi:10.3762/bjnano.16.88

• between the rotenoids and the nanocomposite matrix was obtained through Fourier-transform infrared (FTIR) spectroscopy. Figure 3A shows the FTIR spectra of CS/TPP-β-CD, CS/TPP-β-CD loaded with rotenoids (CS/TPP-β-CD-rot), and pure rotenoids. All three spectra display a broad absorption band in the 3600

• ). The same equipment was used to determine the zeta potential (ζ, in mV) of the nanoparticles under the following conditions: 25 °C operating temperature, an applied voltage of 200 V, and a total of 1,000 processed runs. Fourier-transform infrared spectroscopy The chemical structure of empty

Deep learning for enhancement of low-resolution and noisy scanning probe microscopy images

• Samuel Gelman,
• Irit Rosenhek-Goldian,
• Nir Kampf,
• Marek Patočka,
• Maricarmen Rios,
• Marcos Penedo,
• Georg Fantner,
• Amir Beker,
• Sidney R. Cohen and
• Ido Azuri

Beilstein J. Nanotechnol. 2025, 16, 1129–1140, doi:10.3762/bjnano.16.83

• ) of pixel values along the horizontal and vertical axes of the image (x, y) and averaging the absolute value of the gradients. A second approach is to transform the image to the frequency domain with the discrete Fourier transform (DFT) when high-frequency regions correspond to the sharp edges. Also

Towards a quantitative theory for transmission X-ray microscopy

• James G. McNally,
• Christoph Pratsch,
• Stephan Werner,
• Stefan Rehbein,
• Andrew Gibbs,
• Jihao Wang,
• Thomas Lunkenbein,
• Peter Guttmann and
• Gerd Schneider

Beilstein J. Nanotechnol. 2025, 16, 1113–1128, doi:10.3762/bjnano.16.82

• the camera, but as shown in Supporting Information File 1, Section S6, this expression can be simplified by a paraxial approximation. This leads to a solution that takes a standard form [33], namely the Fourier transform of the lens pupil function (in brackets below) computed over the lens circular

• crystalline order extended over the full particle. Fourier transform of a sub-region of this image yielded a lattice spacing for Au(111) of 0.236 nm, close to the nominal value of 0.235 nm (Supporting Information File 1, Section S13, Figure S12b). Finally, an energy-dispersive X-ray spectroscopy analysis

Piezoelectricity of hexagonal boron nitrides improves bone tissue generation as tested on osteoblasts

• Sevin Adiguzel,
• Nilay Cicek,
• Zehra Cobandede,
• Feray B. Misirlioglu,
• Hulya Yilmaz and
• Mustafa Culha

Beilstein J. Nanotechnol. 2025, 16, 1068–1081, doi:10.3762/bjnano.16.78

• drop-casting 1 μL of hBN suspension (prepared in deionized water) onto a TEM grid. Fourier-transform infrared spectroscopy (FTIR, Shimadzu IRAffinity-1S) and Raman spectroscopy (Renishaw, 532 nm laser) were used to analyze chemical bonds and assess crystallinity. UV–visible spectroscopy (Varian Cary UV

Time-resolved probing of laser-induced nanostructuring processes in liquids

• Maximilian Spellauge,
• David Redka,
• Mianzhen Mo,
• Changyong Song,
• Heinz Paul Huber and
• Anton Plech

Beilstein J. Nanotechnol. 2025, 16, 968–1002, doi:10.3762/bjnano.16.74

• intensity depends only on the atoms present in the molecule. It is worth noting that the atomic scattering factor for electrons can be calculated via a Fourier transform of the atomic potential, while for X-rays it can be obtained using a Fourier transform of electron density. The two results are however

• being the Fourier transform squared of the real-space scattering length distribution. As this scattering length is well known, scattering can be described quantitatively in units of the electron scattering strength r0 = 2.8 × 10−15 m. NP materials such as suspensions represent a heterogeneous system of

• , disappearance, or shift of structural features. The Fourier transform of the complete particle leads to SAXS at low scattering vectors corresponding to π/D with D being the particle size. In Figure 9C such a 2D depiction of ΔI*q2 is shown in false colors, where blue areas indicate negative difference and red

Supramolecular hydration structure of graphene-based hydrogels: density functional theory, green chemistry and interface application

• Hon Nhien Le,
• Duy Khanh Nguyen,
• Minh Triet Dang,
• Huyen Trinh Nguyen,
• Thi Bang Tam Dao,
• Trung Do Nguyen,
• Chi Nhan Ha Thuc and
• Van Hieu Le

Beilstein J. Nanotechnol. 2025, 16, 806–822, doi:10.3762/bjnano.16.61

• microscopy and energy-dispersive X-ray spectroscopy were performed using a JSM-IT200 system (JEOL). Samples were coated with Pt before the SEM-EDS analysis. X-ray diffraction was performed on a D8 Advance instrument (Bruker). Fourier-transform infrared spectroscopy (FTIR) was characterized with a FT/IR-6600

Changes of structural, magnetic and spectroscopic properties of microencapsulated iron sucrose nanoparticles in saline

• Sabina Lewińska,
• Pavlo Aleshkevych,
• Roman Minikayev,
• Anna Bajorek,
• Mateusz Dulski,
• Krystian Prusik,
• Tomasz Wojciechowski and
• Anna Ślawska-Waniewska

Beilstein J. Nanotechnol. 2025, 16, 762–784, doi:10.3762/bjnano.16.59

• transmission electron microscopy (TEM). Composition studies using XRD, magnetic properties using dc and ac magnetometry, and extensive spectral analysis using Fourier-transform infrared spectroscopy (FTIR), Raman, and electron paramagnetic resonance (EPR) were also performed. Considering that the AB-Fortis

• lattice fringes are easily visible. The interplanar distance measured from the fast Fourier transform (FFT) is about 2.54 Å, which is in good accordance with the (400) plane of the α-FeOOH and with the (311) plane of the Fe3O4 phase, but less likely with the (40−1) or (400) plane of the β-FeOOH. Therefore

Aprepitant-loaded solid lipid nanoparticles: a novel approach to enhance oral bioavailability

• Mazhar Hussain,
• Muhammad Farooq,
• Muhammad Asad Saeed,
• Muhammad Ijaz,
• Sherjeel Adnan,
• Zeeshan Masood,
• Muhammad Waqas,
• Wafa Ishaq and
• Nabeela Ameer

Beilstein J. Nanotechnol. 2025, 16, 652–663, doi:10.3762/bjnano.16.50

• analysis. APT-loaded SLNs were prepared by the precipitation method and characterized by physicochemical studies including particle size and zeta potential measurements, drug content, encapsulation efficiency and solubility studies, Fourier-transform infrared spectroscopy (FTIR), scanning electron

• , and zeta potential measurements. Also Fourier-transform infrared (FTIR) spectroscopy, X-ray diffraction (XRD), solubility, in vitro dissolution, and in vivo and stability studies were carried out. Result and Discussion Physicochemical evaluation The solubility of APT in the SLNs was 24-fold higher

• studies Fourier-transform infrared spectroscopy (FTIR) was performed using an Agilent Technologies Cary 660 apparatus to detect the physicochemical interaction between APT and β-CD and poloxamer 407. The spectra were recorded in a wave number range of 4000 to 400 cm−1. X-ray diffraction (XRD, D/MAX-2500

N₂⁺-implantation-induced tailoring of structural, morphological, optical, and electrical characteristics of sputtered molybdenum thin films

• Usha Rani,
• Kafi Devi,
• Divya Gupta and
• Sanjeev Aggarwal

Beilstein J. Nanotechnol. 2025, 16, 495–509, doi:10.3762/bjnano.16.38

• to 300 nm also led to noticeable changes in morphology. With the increase in thickness, rough peaks evolved into broader and flatter shapes. The fast Fourier transform images indicate random distribution with different orientations of particles. The surface morphology parameters are listed in Table 3

• films as a function of the thickness. 2D and 3D AFM images of Mo thin films: as-deposited (a) 150 nm, (b) 200 nm, (c) 250 nm, and (d) 300 nm, and implanted (a′) 150 nm, (b′) 200 nm, (c′) 250 nm, and (d′) 300 nm. The fast Fourier transform images are insets in the 2D AFM micrographs. Measured SE data

Performance optimization of a microwave-coupled plasma-based ultralow-energy ECR ion source for silicon nanostructuring

• Joy Mukherjee,
• Safiul Alam Mollick,
• Tanmoy Basu and
• Tapobrata Som

Beilstein J. Nanotechnol. 2025, 16, 484–494, doi:10.3762/bjnano.16.37

• increases with bombardment time. Fast Fourier transform (FFT) images of the nanopatterned surface are inset in the lower right corner of each image. In the present case, the fluence is represented by irradiation time. The quality and the growth of the nanostructures are quantitatively discussed in Figure 6

Quantification of lead through rod-shaped silver-doped zinc oxide nanoparticles using an electrochemical approach

• Ravinder Lamba,
• Gaurav Bhanjana,
• Neeraj Dilbaghi,
• Vivek Gupta and
• Sandeep Kumar

Beilstein J. Nanotechnol. 2025, 16, 422–434, doi:10.3762/bjnano.16.33

• nanorods are made of zinc and oxygen. The produced nanorods are pure Ag@ZnO NRs with no detectable impurities, as evidenced by the absence of any other peak in the spectrum associated with any impurity. Fourier-transform infrared spectroscopy analysis of Ag@ZnO nanorods Figure 3 presents the typical

• Fourier-transform infrared spectroscopy (FTIR) spectrum of produced Ag@ZnO NRs. Different groups and bonds were examined using the FTIR spectrum. Ag doping changes the bond length of the sample, resulting in a minor shift in peak location toward higher wavelengths. The distinctive stretching mode of the