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Search for "mechanisms" in Full Text gives 765 result(s) in Beilstein Journal of Nanotechnology. Showing first 200.

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

Graphical Abstract
  • create damage within the target material, as demonstrated in Figure 1C. These findings highlight the significant interactions between the nitrogen ions and the molybdenum target material during the implantation process, providing valuable insights into the mechanisms that govern ion implantation and the
  • microstructure and the interplay of intrinsic and extrinsic stress mechanisms. Figure 4 shows that the tensile stress in as-deposited Mo thin films decreases from 1.25 to 0.31 GPa as the film thickness increases from 150 to 300 nm, attributed to the relaxation of intrinsic stress induced during deposition. At
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Published 01 Apr 2025

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

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  • sources generate enormous possibilities for material modifications both physically and chemically. Further, there are diverse ion production mechanisms. The fundamental process of producing ions is the collision of atoms with ions or electrons, which may be either elastic or inelastic. In elastic
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Published 31 Mar 2025

Impact of adsorbate–substrate interaction on nanostructured thin films growth during low-pressure condensation

  • Alina V. Dvornichenko,
  • Vasyl O. Kharchenko and
  • Dmitrii O. Kharchenko

Beilstein J. Nanotechnol. 2025, 16, 473–483, doi:10.3762/bjnano.16.36

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  • essential for tailoring thin film properties to meet specific application requirements. Further research efforts focusing on elucidating the underlying mechanisms of adsorbate–substrate interactions and their impact on thin film growth dynamics will continue to drive advancements in materials science and
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Published 28 Mar 2025

Effect of additives on the synthesis efficiency of nanoparticles by laser-induced reduction

  • Rikuto Kuroda,
  • Takahiro Nakamura,
  • Hideki Ina and
  • Shuhei Shibata

Beilstein J. Nanotechnol. 2025, 16, 464–472, doi:10.3762/bjnano.16.35

Graphical Abstract
  • of various materials [18][19][20][21][22][23][24] using different mechanisms [25][26][27][28] have been conducted via LRL. High-energy ultrashort pulses focused and irradiated into a solution cause the breakdown of solvent molecules. Then, produced solvated electrons among reactive species reduce the
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Published 27 Mar 2025

Synthetic-polymer-assisted antisense oligonucleotide delivery: targeted approaches for precision disease treatment

  • Ana Cubillo Alvarez,
  • Dylan Maguire and
  • Ruairí P. Brannigan

Beilstein J. Nanotechnol. 2025, 16, 435–463, doi:10.3762/bjnano.16.34

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Published 27 Mar 2025

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

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  • electrode can provide additional details about the electrochemical process. It can help to understand the kinetics of electron transfer reactions, analyte diffusion, and electrode surface contact mechanisms. A modified Ag@ZnO NRs electrode with greater impedance is more stable and durable. This provides
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Published 26 Mar 2025

Biomimetics and bioinspired surfaces: from nature to theory and applications

  • Rhainer Guillermo Ferreira,
  • Thies H. Büscher,
  • Manuela Rebora,
  • Poramate Manoonpong,
  • Zhendong Dai and
  • Stanislav N. Gorb

Beilstein J. Nanotechnol. 2025, 16, 418–421, doi:10.3762/bjnano.16.32

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  • influence their performance and at drawing inspiration for modern technology from the vast array of solutions found in nature [1]. By examining the multiscale structures and mechanisms in biological systems, innovative and technologically advanced solutions can be developed for practical applications
  • and examples for engineers and scientists) [13] or Bionik als Wissenschaft (Biomimetics as a scientific discipline) [14] which remain influential for the scientific community. His book on biological attachment mechanisms and their use in bioengineering has been influential for scientists working on
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Published 26 Mar 2025

Size control of nanoparticles synthesized by pulsed laser ablation in liquids using donut-shaped beams

  • Abdel Rahman Altakroury,
  • Oleksandr Gatsa,
  • Farbod Riahi,
  • Zongwen Fu,
  • Miroslava Flimelová,
  • Andrei Samokhvalov,
  • Stephan Barcikowski,
  • Carlos Doñate-Buendía,
  • Alexander V. Bulgakov and
  • Bilal Gökce

Beilstein J. Nanotechnol. 2025, 16, 407–417, doi:10.3762/bjnano.16.31

Graphical Abstract
  • increase in the radiation absorption efficiency inside transparent materials because of the implosion of the absorbed energy during propagation [39]. It is crucial to understand the early-stage mechanisms of PLAL to correlate them to NP size control. Plasma plume formation and expansion is a critical step
  • approach for more precise control over nanoparticle size and shape uniformity, though further studies are needed to fully elucidate the mechanisms involved. (a) Schematic of the experimental setup for beam shaping and PLAL. (b, c) Intensity profiles of the Gaussian and donut-shaped beams, respectively
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Published 25 Mar 2025

ReactorAFM/STM – dynamic reactions on surfaces at elevated temperature and atmospheric pressure

  • Tycho Roorda,
  • Hamed Achour,
  • Matthijs A. van Spronsen,
  • Marta E. Cañas-Ventura,
  • Sander B. Roobol,
  • Willem Onderwaater,
  • Mirthe Bergman,
  • Peter van der Tuijn,
  • Gertjan van Baarle,
  • Johan W. Bakker,
  • Joost W. M. Frenken and
  • Irene M. N. Groot

Beilstein J. Nanotechnol. 2025, 16, 397–406, doi:10.3762/bjnano.16.30

Graphical Abstract
  • , a high-pressure ReactorSTM has been developed [10][11]. The pressures in the scanning tunneling microscopy (STM) reactor are orders of magnitude above UHV (up to several bar), rendering gas–catalyst interactions very significant and leading to differences in reaction mechanisms [12][13][14][15
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Published 21 Mar 2025

Pulsed laser in liquid grafting of gold nanoparticle–carbon support composites

  • Madeleine K. Wilsey,
  • Teona Taseska,
  • Qishen Lyu,
  • Connor P. Cox and
  • Astrid M. Müller

Beilstein J. Nanotechnol. 2025, 16, 349–361, doi:10.3762/bjnano.16.26

Graphical Abstract
  • ]. Alkaline electrolytes can decrease acid-based side reactions but alter Nafion [11][14], impeding ion conductivity and overall performance [5]. Adding binders additionally complicates reaction mechanisms and introduces competing pathways or by-products [5]. Further challenges in traditional nanoparticle
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Published 07 Mar 2025

Tailoring of physical properties of RF-sputtered ZnTe films: role of substrate temperature

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

Beilstein J. Nanotechnol. 2025, 16, 333–348, doi:10.3762/bjnano.16.25

Graphical Abstract
  • ). The Rq value only gives information about the vertical fluctuation in height on a surface. To get more insight into possible surface growth mechanisms and variations in surface roughness, both vertically and laterally power spectral density (PSD) analyses were carried out. In PSD analysis, the surface
  • accountable for morphological changes on the surface of ZnTe films grown on quartz substrate at different substrate temperatures. Values of b equal to 1, 2, 3, and 4 represent four surface growth mechanisms, that is, viscous flow, evaporation–condensation, volume diffusion, and surface diffusion, respectively
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Published 05 Mar 2025

Graphene oxide–chloroquine conjugate induces DNA damage in A549 lung cancer cells through autophagy modulation

  • Braham Dutt Arya,
  • Sandeep Mittal,
  • Prachi Joshi,
  • Alok Kumar Pandey,
  • Jaime E. Ramirez-Vick,
  • Govind Gupta and
  • Surinder P. Singh

Beilstein J. Nanotechnol. 2025, 16, 316–332, doi:10.3762/bjnano.16.24

Graphical Abstract
  • use autophagy pathways for survival through activation of complex DNA damage repair (DDR) mechanisms. In the present study, we demonstrated the genotoxicity induced in A549 lung cancer cells by exposure to the GO–Chl nanoconjugate and elucidated the role of autophagy modulation in harnessing the DNA
  • ; nanoconjugates; SQSTM1/p62; Introduction Despite of advances in basic and clinical research, an increased mortality rate is seen worldwide in cancer-associated deaths [1]. The heterogeneous and complex tumor microenvironment along with intrinsic and/or acquired drug resistance mechanisms, such as increased drug
  • genotoxicity in cancer cells in a ROS-dependent manner [59]. The results indicate that induction of DNA damage in GO–Chl-exposed A549 lung cancer cells could possibly be due to alteration in/failure of DNA-damage response mechanisms. Role of autophagy machinery in inducing DNA damage in GO–Chl-exposed A549
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Published 03 Mar 2025

Fabrication and evaluation of BerNPs regarding the growth and development of Streptococcus mutans

  • Tuyen Huu Nguyen,
  • Hong Thanh Pham,
  • Kieu Kim Thanh Nguyen,
  • Loan Hong Ngo,
  • Anh Ngoc Tuan Mai,
  • Thu Hoang Anh Lam,
  • Ngan Thi Kim Phan,
  • Dung Tien Pham,
  • Duong Thuy Hoang,
  • Thuc Dong Nguyen and
  • Lien Thi Xuan Truong

Beilstein J. Nanotechnol. 2025, 16, 308–315, doi:10.3762/bjnano.16.23

Graphical Abstract
  • partial degradation of the proteins [33]. In this study, FE-SEM analysis further confirmed that one of the mechanisms by which BerNPs kill S. mutans involves the disruption and damage of the bacterial membrane. Inhibition of biofilm formation Streptococcus mutans is the primary cause of dental caries [34
  • ]. It contributes to tooth damage through two main mechanisms, namely, dental erosion due to acid production and the formation of biofilms that produce plaque on teeth [35]. Berberine has been reported to inhibit biofilm formation of Candida albicans and Staphylococcus aureus [36][37]. In this study
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Published 27 Feb 2025

Enhancing mechanical properties of chitosan/PVA electrospun nanofibers: a comprehensive review

  • Nur Areisman Mohd Salleh,
  • Amalina Muhammad Afifi,
  • Fathiah Mohamed Zuki and
  • Hanna Sofia SalehHudin

Beilstein J. Nanotechnol. 2025, 16, 286–307, doi:10.3762/bjnano.16.22

Graphical Abstract
  • -linking [176][177], which often employs toxic chemicals. An example of physical cross-linking is heat treatment, which has been extensively used to cross-link PVA [178]. Figure 10 illustrates the mechanisms of cross-linking in chitosan/PVA composites. In one study, electrospun chitosan/PVA nanofibers were
  • utilized in various specialized applications, such as scaffolds in tissue engineering [185], controlling drug release mechanisms through the manipulation of core and shell compositions [186], and protecting sensitive biomolecules in food packaging [187]. The combination of core–shell chitosan-based
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Published 26 Feb 2025

Emerging strategies in the sustainable removal of antibiotics using semiconductor-based photocatalysts

  • Yunus Ahmed,
  • Keya Rani Dutta,
  • Parul Akhtar,
  • Md. Arif Hossen,
  • Md. Jahangir Alam,
  • Obaid A. Alharbi,
  • Hamad AlMohamadi and
  • Abdul Wahab Mohammad

Beilstein J. Nanotechnol. 2025, 16, 264–285, doi:10.3762/bjnano.16.21

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  • improve the performance and scalability for wider use in real-world situations. Keywords: antibiotics; degradation pathways; heterojunctions; mechanisms; photocatalysts; semiconductor; Introduction Antibiotics are chemical substances used to treat bacterial infections in humans, animals, aquaculture
  • mechanisms of how these materials or processes degrade antibiotics. They do not address the entry of antibiotics into the environment, their adverse impact on human health and the environment, or the effects of each treatment process in relation to established industrial applications. As a result, there is a
  • scope includes discussions on antibiotic sources, pollution risks and impacts, removal challenges, and influential factors. This study aims to provide readers with a comprehensive understanding of the principles and mechanisms underlying semiconductor-based photocatalysts and their modification for
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Published 25 Feb 2025

Preferential enrichment and extraction of laser-synthesized nanoparticles in organic phases

  • Theo Fromme,
  • Maximilian L. Spiekermann,
  • Florian Lehmann,
  • Stephan Barcikowski,
  • Thomas Seidensticker and
  • Sven Reichenberger

Beilstein J. Nanotechnol. 2025, 16, 254–263, doi:10.3762/bjnano.16.20

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  • to the two simultaneously occurring and commonly accepted nanoparticle formation mechanisms happening during the plume phase of LAL (picosecond to longer nanosecond time scale) [57][58]. Recent spatiotemporal, large-scale molecular dynamic simulations show that the thermal history of nanoparticles
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Published 20 Feb 2025

Radiosensitizing properties of dual-functionalized carbon nanostructures loaded with temozolomide

  • Radmila Milenkovska,
  • Nikola Geskovski,
  • Dushko Shalabalija,
  • Ljubica Mihailova,
  • Petre Makreski,
  • Dushko Lukarski,
  • Igor Stojkovski,
  • Maja Simonoska Crcarevska and
  • Kristina Mladenovska

Beilstein J. Nanotechnol. 2025, 16, 229–251, doi:10.3762/bjnano.16.18

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  • surrounding, high levels and different mechanisms of drug resistance and radiation tolerance, as well as a blocking effect of the blood–brain–tumor barrier (BBTB) for drug permeation into the brain extracellular matrix lead to high recurrence rates (in up to 90% of patients) even when complete treatment is
  • limited efficacy (due to the high level of DNA repair by MGMT and other mechanisms of resistance) [34]. In addition, the high hydrolytic instability of TMZ at pH ≥ 7 limits its efficacy, because the formed MTIC exhibits high systemic toxicity and cannot pass the BBTB and accumulate in the GBM, unlike TMZ
  • publications contain information on the potential mechanisms of CNs’ cytotoxicity, pointing to physical destruction, oxidative stress/ROS generation, DNA damage, cell autophagia and lysosomal membrane damage followed by mitochondrial dysfunction, pyroptosis followed by activation of inflammasomes, apoptosis
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Published 19 Feb 2025

Recent advances in photothermal nanomaterials for ophthalmic applications

  • Jiayuan Zhuang,
  • Linhui Jia,
  • Chenghao Li,
  • Rui Yang,
  • Jiapeng Wang,
  • Wen-an Wang,
  • Heng Zhou and
  • Xiangxia Luo

Beilstein J. Nanotechnol. 2025, 16, 195–215, doi:10.3762/bjnano.16.16

Graphical Abstract
  • the photothermal properties of these nanomaterials and their innovative therapeutic mechanisms. We review the latest research on photothermal nanomaterial-based treatments for various eye diseases. Additionally, we discuss the current challenges and future perspectives in this field, with a focus on
  • nanomaterials for treating various ophthalmic diseases, including ocular tumors, glaucoma, cataracts, vitreous opacity, endophthalmitis, and decreased visual acuity. It also summarizes the structure–activity relationships between the photothermal properties of these materials and novel therapeutic mechanisms
  • an aim to contribute to the improvement of global visual health. 2 Photothermal treatment mechanisms and nanomaterial properties of ophthalmic nanomedicines Nanomaterials with highly tunable photothermal conversion properties are referred to as photothermal nanomaterials [22]. These materials are
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Published 17 Feb 2025

A review of metal-organic frameworks and polymers in mixed matrix membranes for CO2 capture

  • Charlotte Skjold Qvist Christensen,
  • Nicholas Hansen,
  • Mahboubeh Motadayen,
  • Nina Lock,
  • Martin Lahn Henriksen and
  • Jonathan Quinson

Beilstein J. Nanotechnol. 2025, 16, 155–186, doi:10.3762/bjnano.16.14

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  • (1) mechanisms of CO2 sorption in MOFs, (2) considerations related to the integration of MOFs in MMMs, (3) CO2 capture performance of MOF-based MMMs, (4) advancements in MOF-based MMM materials design through machine learning, and (5) considerations for the implementation of MOF-based MMMs in large
  • chemical interactions between CO2 and LBSs, offering higher selectivity than purely physisorption-related mechanisms [26]. For example, alkylamine-functionalized IRMOF-74-III compounds have been demonstrated to be efficient CO2 adsorbents [53][68]. In dry conditions, the alkylamines in IRMOF-74-III-(CH2NH2
  • interactions and diverse underlying mechanisms for CO2 selectivity among different MOFs, selecting optimal MOF–polymer combinations for CO2 capture remains highly challenging. As a starting point, it is important to consider the type of MOF and associated CO2 capture mechanism ideal for a given application. As
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Published 12 Feb 2025

Nanocarriers and macrophage interaction: from a potential hurdle to an alternative therapeutic strategy

  • Naths Grazia Sukubo,
  • Paolo Bigini and
  • Annalisa Morelli

Beilstein J. Nanotechnol. 2025, 16, 97–118, doi:10.3762/bjnano.16.10

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  • : essential mechanisms in disease and healing The role of macrophages in disease pathogenesis is closely tied to their activation states. M1 macrophages – drivers of inflammation: M1 macrophages are induced by pro-inflammatory stimuli like lipopolysaccharide (LPS) and interferon gamma (IFN-γ), which trigger a
  • strong pro-inflammatory response. These cells release cytokines such as tumor necrosis factor-α (TNF-α), interleukin (IL)-6, and IL-1β, essential for pathogen clearance and initiating immune defense mechanisms [19]. However, if an inflammation remains active for extended periods, it can contribute to
  • their pro-angiogenic role. They produce VEGF and matrix metalloproteinases (MMPs), which are particularly relevant in tumor progression [17][21][22]. Therapeutic implications of macrophage polarization: Based on the aforementioned mechanisms, it is evident that macrophage dysregulation can be implicated
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Published 31 Jan 2025

Instance maps as an organising concept for complex experimental workflows as demonstrated for (nano)material safety research

  • Benjamin Punz,
  • Maja Brajnik,
  • Joh Dokler,
  • Jaleesia D. Amos,
  • Litty Johnson,
  • Katie Reilly,
  • Anastasios G. Papadiamantis,
  • Amaia Green Etxabe,
  • Lee Walker,
  • Diego S. T. Martinez,
  • Steffi Friedrichs,
  • Klaus M. Weltring,
  • Nazende Günday-Türeli,
  • Claus Svendsen,
  • Christine Ogilvie Hendren,
  • Mark R. Wiesner,
  • Martin Himly,
  • Iseult Lynch and
  • Thomas E. Exner

Beilstein J. Nanotechnol. 2025, 16, 57–77, doi:10.3762/bjnano.16.7

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  • , the different steps involved in specific immune reaction mechanisms (key events for beneficial vs adverse outcomes) were analysed. Figure 8 illustrates the comprehensive experimental workflow overarching several immunotoxicity studies, highlighting the different routes chosen for these studies
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Published 22 Jan 2025

Orientation-dependent photonic bandgaps in gold-dust weevil scales and their titania bioreplicates

  • Norma Salvadores Farran,
  • Limin Wang,
  • Primoz Pirih and
  • Bodo D. Wilts

Beilstein J. Nanotechnol. 2025, 16, 1–10, doi:10.3762/bjnano.16.1

Graphical Abstract
  • quasi-ordered and disordered structures [19][20], by employing pigments [34], by randomization of orientations of photonic structures [21][35], or by a combination of these mechanisms [36]. It seems that the additive pointillistic mixing of ordered domains observed in the gold-dust weevil and other
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Published 02 Jan 2025

Mechanistic insights into endosomal escape by sodium oleate-modified liposomes

  • Ebrahim Sadaqa,
  • Satrialdi,
  • Fransiska Kurniawan and
  • Diky Mudhakir

Beilstein J. Nanotechnol. 2024, 15, 1667–1685, doi:10.3762/bjnano.15.131

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  • limitations of current endosomal escape strategies, innovative approaches are urgently needed. Unraveling the mechanisms underpinning endosomal escape is pivotal for the development of novel, safe, and effective agents capable of overcoming these formidable barriers. Recent studies have highlighted the
  • complexes with liposomal components, enhancing both liposome stability and drug encapsulation. To gain deeper insight into the mechanisms underpinning SO’s potential as an endosomal escape agent, molecular dynamics (MD) simulations have emerged as an indispensable computational tool. These simulations
  • enable the exploration of complex lipid–membrane interactions and dynamic molecular processes at an atomistic level, offering unparalleled insights into mechanisms that are challenging to observe experimentally. By capturing processes such as membrane destabilization, pore formation, and lipid fusion, MD
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Published 30 Dec 2024

Attempts to preserve and visualize protein corona on the surface of biological nanoparticles in blood serum using photomodification

  • Julia E. Poletaeva,
  • Anastasiya V. Tupitsyna,
  • Alina E. Grigor’eva,
  • Ilya S. Dovydenko and
  • Elena I. Ryabchikova

Beilstein J. Nanotechnol. 2024, 15, 1654–1666, doi:10.3762/bjnano.15.130

Graphical Abstract
  • undoubtedly be useful to identify the mechanisms of this phenomenon. It was impossible to assess the proportion of EVs or different LPs carrying a protein corona in samples obtained by UC because of the presence of serum contaminants that can mask bio-NPs. Isolation of bio-NPs from sera by UC did not result
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Published 30 Dec 2024

Fabrication of hafnium-based nanoparticles and nanostructures using picosecond laser ablation

  • Abhishek Das,
  • Mangababu Akkanaboina,
  • Jagannath Rathod,
  • R. Sai Prasad Goud,
  • Kanaka Ravi Kumar,
  • Raghu C. Reddy,
  • Ratheesh Ravendran,
  • Katia Vutova,
  • S. V. S. Nageswara Rao and
  • Venugopal Rao Soma

Beilstein J. Nanotechnol. 2024, 15, 1639–1653, doi:10.3762/bjnano.15.129

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  • the depressions of the LSFL with a direction perpendicular to the direction of the laser scan. Similar observations regarding the formation of LSFL and HSFL with orthogonal directionality and the plausible mechanisms behind their formation are discussed in an earlier work [58]. Figure 11 shows FESEM
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Published 18 Dec 2024
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