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Search for "characterization" in Full Text gives 1402 result(s) in Beilstein Journal of Nanotechnology. Showing first 200.

Synthesis, characterization and anticancer effect of doxorubicin-loaded dual stimuli-responsive smart nanopolymers

  • Ömür Acet,
  • Pavel Kirsanov,
  • Burcu Önal Acet,
  • Inessa Halets-Bui,
  • Dzmitry Shcharbin,
  • Şeyda Ceylan Cömert and
  • Mehmet Odabaşı

Beilstein J. Nanotechnol. 2024, 15, 1189–1196, doi:10.3762/bjnano.15.96

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  • Centrifugen, USA). The precipitated nanostructures were redispersed in distilled water utilizing a sonicator and dried with a lyophilizer. Then, the nanostructures were stored at 4 °C. Characterization studies Functional group analysis was carried out by Fourier-transform infrared (FTIR) spectroscopy
  • relatively to the control (non-treated cells). Statistical analysis The statistical analysis of data was made by ANOVA with post-hoc Newman–Keuls test. The data are presented as mean ± S.D., N ≥ 6. Results and Discussion Characterization studies The SNPs were synthesized as both thermo- and pH-sensitive
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Published 26 Sep 2024

Photocatalytic methane oxidation over a TiO2/SiNWs p–n junction catalyst at room temperature

  • Qui Thanh Hoai Ta,
  • Luan Minh Nguyen,
  • Ngoc Hoi Nguyen,
  • Phan Khanh Thinh Nguyen and
  • Dai Hai Nguyen

Beilstein J. Nanotechnol. 2024, 15, 1132–1141, doi:10.3762/bjnano.15.92

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  • gaseous reactants in batch reactor was established at 5 bar, and the photocatalytic system was kept in the dark (20 min) to reach equilibrium before exposure to simulated solar light. The temperature was kept at room temperature via a cooler. Characterization The crystalline structure and morphological
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Published 02 Sep 2024

Recent updates in applications of nanomedicine for the treatment of hepatic fibrosis

  • Damai Ria Setyawati,
  • Fransiska Christydira Sekaringtyas,
  • Riyona Desvy Pratiwi,
  • A’liyatur Rosyidah,
  • Rohimmahtunnissa Azhar,
  • Nunik Gustini,
  • Gita Syahputra,
  • Idah Rosidah,
  • Etik Mardliyati,
  • Tarwadi and
  • Sjaikhurrizal El Muttaqien

Beilstein J. Nanotechnol. 2024, 15, 1105–1116, doi:10.3762/bjnano.15.89

Graphical Abstract
  • that the incorporation of a broad range of therapeutic agents in a single nanocarrier makes the formulations more complex. Therefore, adequate concerns about standardized protocols and trans-disciplinary characterization strategies of the nanoproducts product should be addressed. A comprehensive set of
  • characterization procedures using state-of-the-art nanomedicine manufacturing facilities allows for continuous monitoring of the production steps, which is required to maintain the consistency of nanocarriers, Despite its promises, the long-term hepatotoxicity of NPs should be carefully reviewed as 30–99% of the
  • acknowledge the facilities, scientific and technical support from Advanced Chemical Characterization Laboratory and Advanced Characterization Laboratories Serpong, National Research and Innovation Agency through E- Layanan Sains – BRIN. Funding The researchers involved in this work received research funding
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Published 23 Aug 2024

Unveiling the potential of alginate-based nanomaterials in sensing technology and smart delivery applications

  • Shakhzodjon Uzokboev,
  • Khojimukhammad Akhmadbekov,
  • Ra’no Nuritdinova,
  • Salah M. Tawfik and
  • Yong-Ill Lee

Beilstein J. Nanotechnol. 2024, 15, 1077–1104, doi:10.3762/bjnano.15.88

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  • -based composite nanoparticles, which provides a comprehensive overview of nanoparticles and their uses, especially in sensing applications (Figure 2). Moreover, characterization techniques of biopolymeric nanoparticles and their importance for drug delivery and sensing methods will be reviewed. In
  • as drug carriers. Since then, tremendous progress has been achieved in the design, manufacture, and characterization of nanoparticle-based DDSs. The use of alginate in drug delivery goes back to the 1980s, when researchers first investigated its ability to encapsulate pharmaceuticals. Over time
  • alginate–polymer nanoparticles involves the use of oil-in-water emulsions in polymer and calcium alginate solutions to prepare polymer NPs and calcium alginate NPs separately [57]. Characterization techniques of alginate-based nanoparticles Characterization techniques play a crucial role in analyzing
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Published 22 Aug 2024

Effect of wavelength and liquid on formation of Ag, Au, Ag/Au nanoparticles via picosecond laser ablation and SERS-based detection of DMMP

  • Sree Satya Bharati Moram,
  • Chandu Byram and
  • Venugopal Rao Soma

Beilstein J. Nanotechnol. 2024, 15, 1054–1069, doi:10.3762/bjnano.15.86

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  • . This process took approximately 20 minutes. Characterization techniques The absorption studies were conducted by placing 3 mL of the colloidal solution in a 1 cm quartz cuvette and using a UV–visible absorption spectrometer (PerkinElmer, LAMBDA 750) within the 300–800 nm wavelength range. The
  • recorded SERS spectra, after which SERS calculations were undertaken. Results and Discussion Characterization Optical absorption studies of as-synthesized nanoparticles The absorbance measurements were carried out on metallic Ag, Au, and Ag/Au NPs prepared using ps LASiS in both DW and aqueous NaCl
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Published 19 Aug 2024

Bolometric IR photoresponse based on a 3D micro-nano integrated CNT architecture

  • Yasameen Al-Mafrachi,
  • Sandeep Yadav,
  • Sascha Preu,
  • Jörg J. Schneider and
  • Oktay Yilmazoglu

Beilstein J. Nanotechnol. 2024, 15, 1030–1040, doi:10.3762/bjnano.15.84

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  • diameters, qualities, and heights. So far, we have only investigated the IR response. Far-IR and THz measurements will be carried out in the future to prove the broadband property of our new bolometer architecture. Results The experimental characterization evaluated a number of parameters, including
  • conditions with higher bias current. Our cost-efficient new microbolometer can be suitable for fast characterization of small materials under optical as well as microwave and terahertz illumination. Conclusion This work aims to advance the understanding and implementation of CNT-based non-cryogenic IR
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Published 15 Aug 2024

Therapeutic effect of F127-folate@PLGA/CHL/IR780 nanoparticles on folate receptor-expressing cancer cells

  • Thi Ngoc Han Pham,
  • Phuong-Thao Dang-Luong,
  • Hong-Phuc Nguyen,
  • Loc Le-Tuan,
  • Xuan Thang Cao,
  • Thanh-Danh Nguyen,
  • Vy Tran Anh and
  • Hieu Vu_Quang

Beilstein J. Nanotechnol. 2024, 15, 954–964, doi:10.3762/bjnano.15.78

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  • then collected by 30 min of centrifugation at 12,000 rpm. Another set of particles, such as F127@PLGA/Cou-6, and F127-folate@PLGA/Cou-6, were used in the cell targeting experiment, which were prepared under similar conditions. Characterization of F127-folate@PLGA/CHL/IR780 nanoparticles Dynamic light
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Published 31 Jul 2024

A review on the structural characterization of nanomaterials for nano-QSAR models

  • Salvador Moncho,
  • Eva Serrano-Candelas,
  • Jesús Vicente de Julián-Ortiz and
  • Rafael Gozalbes

Beilstein J. Nanotechnol. 2024, 15, 854–866, doi:10.3762/bjnano.15.71

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  • their risks, are blooming. One of the challenges is the characterization of the NMs. This cannot be done with a simple SMILES representation, as for organic molecules, because their chemical structure is complex, including several layers and many inorganic materials, and their size and geometry are key
  • tested for both the adequate characterization results and the prediction endpoint. Therefore, the development of QSAR models requires the codification of information on nanoforms beyond classical molecular descriptors. NMs have some particularities in comparison with discrete substances, which are (i
  • by different authors to characterize the NMs [7]. Taking these models as starting point, and in order to harmonize the characterization of the nanoforms, we propose a classification of the descriptors as follows (Figure 3): (i) Descriptors that directly describe the nanoform, that is, its chemical
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Published 11 Jul 2024

Synthesis of silver–palladium Janus nanoparticles using co-sputtering of independent sources: experimental and theorical study

  • Maria J. Martínez-Carreón,
  • Francisco Solís-Pomar,
  • Abel Fundora,
  • Claudio D. Gutiérrez-Lazos,
  • Sergio Mejía-Rosales,
  • Hector N. Fernández-Escamilla,
  • Jonathan Guerrero-Sánchez,
  • Manuel F. Meléndrez and
  • Eduardo Pérez-Tijerina

Beilstein J. Nanotechnol. 2024, 15, 808–816, doi:10.3762/bjnano.15.67

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  • drift”. Figure 4b presents the spectrum of elementary analysis; the two elements silver and palladium appear. All characterization techniques, as well as the calculation of the interplanar distances, showed only the presence of silver and palladium without any contaminants or other metals, which
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Published 04 Jul 2024

Electrospun polysuccinimide scaffolds containing different salts as potential wound dressing material

  • Veronika Pálos,
  • Krisztina S. Nagy,
  • Rita Pázmány,
  • Krisztina Juriga-Tóth,
  • Bálint Budavári,
  • Judit Domokos,
  • Dóra Szabó,
  • Ákos Zsembery and
  • Angela Jedlovszky-Hajdu

Beilstein J. Nanotechnol. 2024, 15, 781–796, doi:10.3762/bjnano.15.65

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  • ][37]. This study aimed to create a two-component polymer-composite scaffold as a potential wound dressing material by electrospinning, using antibacterial salts (Zn(O2CCH3)2 or Sr(NO3)2) in addition to PSI. We performed the following experiments: physical and chemical characterization of the fibers by
  • powder was dried at 40 °C and stored at room temperature. Based on our previous publications, the molecular weight of the polymer is 28 500 ± 3000 Da [44]. Preparation and characterization of the solutions The preparation of solutions for electrospinning was the following: a 25% (w/w) mixture was made
  • ). Results and Discussion To create a proper wound dressing material containing inorganic salt for potential antibacterial purposes, the first step was the synthesis of the polymer, the characterization of the solution, and the final scaffold with different techniques. Characterization of solutions and
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Published 02 Jul 2024

Exploring surface charge dynamics: implications for AFM height measurements in 2D materials

  • Mario Navarro-Rodriguez,
  • Andres M. Somoza and
  • Elisa Palacios-Lidon

Beilstein J. Nanotechnol. 2024, 15, 767–780, doi:10.3762/bjnano.15.64

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  • addition, it can be integrated with classical optical spectroscopy methods such as Raman and fluorescence [20][28][29], enabling a multidimensional characterization approach. A well-recognized issue within the AFM community is the inaccurate height determination derived from topography images on
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Published 01 Jul 2024

Green synthesis of biomass-derived carbon quantum dots for photocatalytic degradation of methylene blue

  • Dalia Chávez-García,
  • Mario Guzman,
  • Viridiana Sanchez and
  • Rubén D. Cadena-Nava

Beilstein J. Nanotechnol. 2024, 15, 755–766, doi:10.3762/bjnano.15.63

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  • 24 h, CQDs were successfully synthesized. A comprehensive characterization of the CQDs was performed using UV–visible spectroscopy, Fourier-transform infrared spectroscopy, dynamic light scattering, Raman spectroscopy, and luminescence spectroscopy, confirming their high quality. The photocatalytic
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Published 25 Jun 2024

Effect of repeating hydrothermal growth processes and rapid thermal annealing on CuO thin film properties

  • Monika Ozga,
  • Eunika Zielony,
  • Aleksandra Wierzbicka,
  • Anna Wolska,
  • Marcin Klepka,
  • Marek Godlewski,
  • Bogdan J. Kowalski and
  • Bartłomiej S. Witkowski

Beilstein J. Nanotechnol. 2024, 15, 743–754, doi:10.3762/bjnano.15.62

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  • acknowledge Adrian Gruszecki for his help in the Raman spectroscopy measurements. The results discussed in this paper were partially presented in M. Ozga’s doctoral thesis “Copper(II) oxide films obtained by hydrothermal method – growth technology, characterization and potential applications in electronics
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Published 24 Jun 2024

Simultaneous electrochemical determination of uric acid and hypoxanthine at a TiO2/graphene quantum dot-modified electrode

  • Vu Ngoc Hoang,
  • Dang Thi Ngoc Hoa,
  • Nguyen Quang Man,
  • Le Vu Truong Son,
  • Le Van Thanh Son,
  • Vo Thang Nguyen,
  • Le Thi Hong Phong,
  • Ly Hoang Diem,
  • Kieu Chan Ly,
  • Ho Sy Thang and
  • Dinh Quang Khieu

Beilstein J. Nanotechnol. 2024, 15, 719–732, doi:10.3762/bjnano.15.60

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  • µL of 500 µM URI and 20 µL of 500 µM HYT before dilution to 10 mL. Results and Discussion Characterization of materials The mixtures of GQDs and TiO2/GQDs suspensions were exposed to visible and UV light to confirm their fluorescence behavior. Under visible light, the aqueous suspension of GQDs is
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Published 20 Jun 2024

Elastic modulus of β-Ga2O3 nanowires measured by resonance and three-point bending techniques

  • Annamarija Trausa,
  • Sven Oras,
  • Sergei Vlassov,
  • Mikk Antsov,
  • Tauno Tiirats,
  • Andreas Kyritsakis,
  • Boris Polyakov and
  • Edgars Butanovs

Beilstein J. Nanotechnol. 2024, 15, 704–712, doi:10.3762/bjnano.15.58

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  • research was supported by the Latvian Council of Science project lzp-2022/1-0311. S.O, S.V, T.T., and A.K acknowledge the European Union’s Horizon 2020 program, under Grant Agreement No. 856705 (ERA Chair “MATTER”). Characterization facilities at the University of Tartu were supported by the Center of
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Published 18 Jun 2024

Enhancing higher-order modal response in multifrequency atomic force microscopy with a coupled cantilever system

  • Wendong Sun,
  • Jianqiang Qian,
  • Yingzi Li,
  • Yanan Chen,
  • Zhipeng Dou,
  • Rui Lin,
  • Peng Cheng,
  • Xiaodong Gao,
  • Quan Yuan and
  • Yifan Hu

Beilstein J. Nanotechnol. 2024, 15, 694–703, doi:10.3762/bjnano.15.57

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  • ; Introduction Multifrequency atomic force microscopy (AFM) has become an important tool for nanoscale imaging and characterization [1][2]. This technique involves the excitation and detection of multiple frequencies to improve data acquisition speed, sensitivity, and resolution, as well as to enable material
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Published 17 Jun 2024

Gold nanomakura: nanoarchitectonics and their photothermal response in association with carrageenan hydrogels

  • Nabojit Das,
  • Vikas,
  • Akash Kumar,
  • Sanjeev Soni and
  • Raja Gopal Rayavarapu

Beilstein J. Nanotechnol. 2024, 15, 678–693, doi:10.3762/bjnano.15.56

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  • . Also, the photothermal responses of the nanoparticles in association with k-CG hydrogels were assessed, indicating their potential in biomedical applications. Furthermore, characterization such as zeta potential, crystallinity, and surface functionalization were investigated through ZetaSizer, X-ray
  • 3 h at 60 °C. The dried beads were used for the subsequent experiments and characterization techniques. Characterization techniques The absorption spectra of the synthesized gold nanoparticles capped with CTAB, MTAB, and DTAB were measured using an Epoch2 (BioTek, USA) spectrophotometer. An amount
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Published 07 Jun 2024

Exfoliation of titanium nitride using a non-thermal plasma process

  • Priscila Jussiane Zambiazi,
  • Dolores Ribeiro Ricci Lazar,
  • Larissa Otubo,
  • Rodrigo Fernando Brambilla de Souza,
  • Almir Oliveira Neto and
  • Cecilia Chaves Guedes-Silva

Beilstein J. Nanotechnol. 2024, 15, 631–637, doi:10.3762/bjnano.15.53

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  • and Konstantin Novoselov in 2004 [1], the field of nanostructures has witnessed remarkable advancements. Various methods to fabricate graphene, such as mechanical and chemical exfoliation, combined with innovative characterization techniques, have enabled the preparation of diverse layered two
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Published 31 May 2024

AFM-IR investigation of thin PECVD SiOx films on a polypropylene substrate in the surface-sensitive mode

  • Hendrik Müller,
  • Hartmut Stadler,
  • Teresa de los Arcos,
  • Adrian Keller and
  • Guido Grundmeier

Beilstein J. Nanotechnol. 2024, 15, 603–611, doi:10.3762/bjnano.15.51

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  • the AFM-IR surface-sensitive mode for the investigation of ultra-thin films and the interfaces to the supporting materials. Conclusion The benefits of the surface-sensitive mode in the AFM-IR characterization of thin PECVD SiOx films on polymer substrates were investigated in this study. Our results
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Published 24 May 2024

Stiffness calibration of qPlus sensors at low temperature through thermal noise measurements

  • Laurent Nony,
  • Sylvain Clair,
  • Daniel Uehli,
  • Aitziber Herrero,
  • Jean-Marc Themlin,
  • Andrea Campos,
  • Franck Para,
  • Alessandro Pioda and
  • Christian Loppacher

Beilstein J. Nanotechnol. 2024, 15, 580–602, doi:10.3762/bjnano.15.50

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  • -vacuum (UHV) system and at, or close to, liquid helium temperature (4–10 K, LT UHV), the method allows for the direct characterization of individual molecules with intramolecular contrast [4], opening up the field of studying on-surface reactions [5] or tip-induced chemistry [6]. The method also makes it
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Published 23 May 2024

Radiofrequency enhances drug release from responsive nanoflowers for hepatocellular carcinoma therapy

  • Yanyan Wen,
  • Ningning Song,
  • Yueyou Peng,
  • Weiwei Wu,
  • Qixiong Lin,
  • Minjie Cui,
  • Rongrong Li,
  • Qiufeng Yu,
  • Sixue Wu,
  • Yongkang Liang,
  • Wei Tian and
  • Yanfeng Meng

Beilstein J. Nanotechnol. 2024, 15, 569–579, doi:10.3762/bjnano.15.49

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  • when combined with RF hyperthermia. Using these CUR-Fe@MnO2 NFs combined with RF, hyperthermia is a candidate method for the targeted treatment of HCC via combined chemotherapy/hyperthermia. Results and Discussion Characterization The Fe3O4 NCs were prepared by a microwave hydrothermal synthesis method
  • CUR-Fe@MnO2 NFs were collected by magnetic separation and washed 3 times with deionized water. Characterization of the synthesized nanomaterials The morphology and size of Fe3O4 NCs, CUR-Fe NPs, and CUR-Fe@MnO2 NFs were determined via transmission electron microscopy (Tecnai F20, FEI, USA). The TEM
  • to CC BY 4.0. Characterization of the nanomaterials. a–c) TEM images of the Fe3O4 NCs, CUR-Fe NPs, and CUR-Fe@MnO2 NFs (scale bar: 200 nm). d,e) Zeta potentials and hydrodynamic diameters of the Fe3O4 NCs, CUR-Fe NPs, and CUR-Fe@MnO2 NFs (the polydispersity index values were 0.184, 0.260, 0.269
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Published 22 May 2024

Cholesterol nanoarchaeosomes for alendronate targeted delivery as an anti-endothelial dysfunction agent

  • Horacio Emanuel Jerez,
  • Yamila Roxana Simioni,
  • Kajal Ghosal,
  • Maria Jose Morilla and
  • Eder Lilia Romero

Beilstein J. Nanotechnol. 2024, 15, 517–534, doi:10.3762/bjnano.15.46

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  • increasingly pursued “quality by design” criteria [24]. The development of structurally simple formulations that facilitate their scaling and further characterization is, therefore, a critical task [25]. Also, targeting nanomedicines to circulating cells and vascular walls is difficult since it should occur
  • simplicity and resistance to mechanical stress. Recently, we have reported the structural characterization and effect on J774A.1 murine macrophages of ALN loaded in nanoarchaeosomes, that is, nanoARC(ALN) and nanoARC-Chol(ALN). Remarkably, these formulations do not seek to modify the solubility of ALN, but
  • IL-6 and IL-8 by HUVECs even in the presence of TNF-α. Results Characterization of ALN-loaded nanovesicles The structural features of ALN-loaded nanovesicles are shown in Table 1. As reported previously, nanoarchaeosome bilayers contain archaeolipids displaying methyl groups perpendicular to their
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Published 13 May 2024

Electron-induced deposition using Fe(CO)4MA and Fe(CO)5 – effect of MA ligand and process conditions

  • Hannah Boeckers,
  • Atul Chaudhary,
  • Petra Martinović,
  • Amy V. Walker,
  • Lisa McElwee-White and
  • Petra Swiderek

Beilstein J. Nanotechnol. 2024, 15, 500–516, doi:10.3762/bjnano.15.45

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Published 08 May 2024

Aero-ZnS prepared by physical vapor transport on three-dimensional networks of sacrificial ZnO microtetrapods

  • Veaceslav Ursaki,
  • Tudor Braniste,
  • Victor Zalamai,
  • Emil Rusu,
  • Vladimir Ciobanu,
  • Vadim Morari,
  • Daniel Podgornii,
  • Pier Carlo Ricci,
  • Rainer Adelung and
  • Ion Tiginyanu

Beilstein J. Nanotechnol. 2024, 15, 490–499, doi:10.3762/bjnano.15.44

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  • ]. Nevertheless, both PL characterization and phonon mode analysis are indicative of a mixed-phase zinc blende/wurtzite composition of the prepared aero-ZnS material in concordance with the XRD analysis. Apart from these major emission bands, a series of weaker features are observed in the range from 3.36 to 3.23
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Published 02 May 2024

Fabrication of nanocrystal forms of ᴅ-cycloserine and their application for transdermal and enteric drug delivery systems

  • Hsuan-Ang Tsai,
  • Tsai-Miao Shih,
  • Theodore Tsai,
  • Jhe-Wei Hu,
  • Yi-An Lai,
  • Jui-Fu Hsiao and
  • Guochuan Emil Tsai

Beilstein J. Nanotechnol. 2024, 15, 465–474, doi:10.3762/bjnano.15.42

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  • ., Ltd.) for 10 min. The collection was vacuum-dried to obtain DCS nanocrystals. Characterization of DCS nanocrystals The DCS nanocrystals were analyzed via scanning electronic microscopy (SEM, JEOL Ltd.) and X-ray powder diffraction (XRPD, Bruker AXS GmbH). For SEM, commercial DCS was spreaded onto a
  • release study and in the PK study for enteric capsules was performed in triplicates for statistical analysis. The data were presented as mean ± standard deviation (SD) in the tables. The p-value was calculated through Student’s t-test to determine the statistical significance. Results Characterization of
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Published 25 Apr 2024
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