A combined gas-phase dissociative ionization, dissociative electron attachment and deposition study on the potential FEBID precursor [Au(CH₃)₂Cl]₂

• Elif Bilgilisoy,
• Ali Kamali,
• Thomas Xaver Gentner,
• Gerd Ballmann,
• Sjoerd Harder,
• Hans-Peter Steinrück,
• Hubertus Marbach and
• Oddur Ingólfsson

Beilstein J. Nanotechnol. 2023, 14, 1178–1199, doi:10.3762/bjnano.14.98

• . This may partly explain the insufficient metal content achieved when using CVD precursors in FEBID [18]. In this context, efforts have been made to design gold precursors optimized for FEBID. Arguably, the most noticeable of these are chloro(carbonyl)gold(I) (AuICl(CO)) [22] and chloro

• of magnitude for DI and DEA of the FEBID precursor Co(CO)3(NO) [49][50] and Pt(PF3)4 [51], the reactive area of this monolayer is 0.15 μm2. Statistically, this implies approx. 300 reactive incidents per molecule if the cross section is assumed to stay unchanged. This is clearly not a quantitative

• , and studies on the gold(I) precursors AuXL (L = P(NMe2)3, PMe3, CNMe, CNt-Bu, P(OCH2CF3)3; X = Cl, Br, I) [52], and on Ru(CO)4I2 [31], Ru(η3-C3H5)(CO)3X (X = Cl, Br) [48][53][54], Pt(NH3)2Cl2 [55][56], and Pt(CO)2X2 (X = Cl, Br) [57][58][59][60][61] have been reported. These include post-deposition

Hierarchically patterned polyurethane microgrooves featuring nanopillars or nanoholes for neurite elongation and alignment

• Lester Uy Vinzons,
• Guo-Chung Dong and
• Shu-Ping Lin

Beilstein J. Nanotechnol. 2023, 14, 1157–1168, doi:10.3762/bjnano.14.96

• ], poly(lactic-co-glycolic acid) nanodots enhanced the proliferation and neurite sprouting of Neuro-2a cells [7], and oriented elliptical Si microcones induced alignment and increased fasciculation in rat superior cervical ganglion axons [8]. With their effects complementing those of continuous structures

• Advanced Materials (MA, USA), while AZ1518 and AZ 300 MIF developer were purchased from MicroChemicals GmbH (Germany). PDMS, γ-butyrolactone (GBL), and PU pellets (Tecothane®, clear; TT-1085A) were obtained from Sil-More Industrial Ltd. (Taiwan), Echo Chemical Co., Ltd. (Taiwan), and Lubrizol Advanced

Elasticity, an often-overseen parameter in the development of nanoscale drug delivery systems

• Agnes-Valencia Weiss and
• Marc Schneider

Beilstein J. Nanotechnol. 2023, 14, 1149–1156, doi:10.3762/bjnano.14.95

• filled with poly(lactic-co-glycolic acid) (PLGA) cores of different sizes resulting in interfacial water layers with different thicknesses and therefore with tunable elasticity [38]. Semielastic particles whose Young’s moduli were around 50 mPa showed the fastest diffusion in mucus. However, harder

A multi-resistance wide-range calibration sample for conductive probe atomic force microscopy measurements

• François Piquemal,
• Khaled Kaja,
• Pascal Chrétien,
• José Morán-Meza,
• Frédéric Houzé,
• Christian Ulysse and
• Abdelmounaim Harouri

Beilstein J. Nanotechnol. 2023, 14, 1141–1148, doi:10.3762/bjnano.14.94

• 20IND12), which is supported by the European Metrology Programme for Innovation and Research (EMPIR). The EMPIR initiative is co-funded by the European Horizon 2020 research and innovation program and the EMPIR Participating States. Competing Interests The authors declare no competing interests.

Curcumin-loaded albumin submicron particles with potential as a cancer therapy: an in vitro study

• Nittiya Suwannasom,
• Netsai Sriaksorn,
• Chutamas Thepmalee,
• Krissana Khoothiam,
• Ausanai Prapan,
• Hans Bäumler and
• Chonthida Thephinlap

Beilstein J. Nanotechnol. 2023, 14, 1127–1140, doi:10.3762/bjnano.14.93

• poorly water-soluble CUR. An effective submicron particle fabrication technique, namely co-precipitation–cross-linking–dissolution (CCD), has been established to produce biopolymer particles [24][25][26]. In this method, biopolymer particles are produced via co-precipitation, by simply mixing MnCl2 and

• particles are easily synthesized via cost-effective co-precipitation methods. These techniques are simple, low-cost, and easily scalable, enabling precise control over particle characteristics, including size and morphology, and use inexpensive materials without generating toxic waste. Having established an

• (CUR-HSA-MPs) is shown in Figure 1. At first, MnCO3-HSA-MPs were obtained by co-precipitation for the entrapment of HSA. The entrapment efficiency (%EE) of HSA was between 55% and 62% (i.e., the absolute amounts of entrapped HSA in HSA-MPs were up to 31.3 ± 1.8 mg). CUR was then adsorbed onto the MnCO3

A bifunctional superconducting cell as flux qubit and neuron

• Dmitrii S. Pashin,
• Pavel V. Pikunov,
• Marina V. Bastrakova,
• Andrey E. Schegolev,
• Nikolay V. Klenov and
• Igor I. Soloviev

Beilstein J. Nanotechnol. 2023, 14, 1116–1126, doi:10.3762/bjnano.14.92

• , Russia 10.3762/bjnano.14.92 Abstract Josephson digital or analog ancillary circuits are an essential part of a large number of modern quantum processors. The natural candidate for the basis of tuning, coupling, and neromorphic co-processing elements for processors based on flux qubits is the adiabatic

• millikelvin temperatures with zeptojoule energy efficiency [11][12][13][14][15][16][17]. In addition, the basic cells of adiabatic superconducting circuits can be used as a part of neuromorphic co-processors [18][19][20][21][22][23] working in conjunction with quantum computing systems [24][25][26][27][28][29

• how the proposed adjustment circuit will operate at finite (millikelvin) temperatures in the quantum regime and under the influence of relatively fast magnetic field control pulses? Will the tuning, coupling, and neromorphic co-processing circuits acquire new useful properties in the quantum regime

Dual-heterodyne Kelvin probe force microscopy

• Benjamin Grévin,
• Fatima Husainy,
• Dmitry Aldakov and
• Cyril Aumaître

Beilstein J. Nanotechnol. 2023, 14, 1068–1084, doi:10.3762/bjnano.14.88

• ). Working under modulated illumination also allows direct SPV measurements using special modulation/demodulation schemes, such as the one recently proposed by Miyazaki and co-workers for ac-bias KPFM [6]. In addition, most time-resolved KPFM modes developed so far rely on the use of a pulsed/modulated

Recognition mechanisms of hemoglobin particles by monocytes – CD163 may just be one

• Jonathan-Gabriel Nimz,
• Pichayut Rerkshanandana,
• Chiraphat Kloypan,
• Ulrich Kalus,
• Saranya Chaiwaree,
• Axel Pruß,
• Radostina Georgieva,
• Yu Xiong and
• Hans Bäumler

Beilstein J. Nanotechnol. 2023, 14, 1028–1040, doi:10.3762/bjnano.14.85

• a long list of ligands including modified serum albumin, which might also occur within our HBMPs [36]. The interaction of HbMPs (with different surface modifications) with Hp, as well as with anti-Hb antibodies has already been studied by Prapan and co-workers [19]. With this work, the investigation

• central iron ion is trivalent, and the Hb derivative has lost its ability to bind oxygen. Therefore, only bivalent Hb is functional. The “oxygen release method” was used to determine the percentage of functional hemoglobin, as previously described in detail by Kloypan and co-workers [33]. In brief, the

• block the monocytic membrane protein, as formerly described by Schaer and co-workers [27]. For a reference sample, the phagocytic capacity of monocytes was fully utilized for the uptake of FITC-labeled E. coli lysate over a period of 10 min at 37 °C (commercially available phagocytosis tests use lysate

Nanoarchitectonics of photothermal materials to enhance the sensitivity of lateral flow assays

• Elangovan Sarathkumar,
• Rajasekharan S. Anjana and
• Ramapurath S. Jayasree

Beilstein J. Nanotechnol. 2023, 14, 988–1003, doi:10.3762/bjnano.14.82

• of nanorods makes them excellent light absorbers for photothermal applications, while greater dimensions makes them efficient light scatterers for imaging applications [57]. The absorption and photothermal characteristics of four differently sized nanorods were analysed by Sun and co-workers. The

• , vol. 7, issue 6, © 2014, permission conveyed through Copyright Clearance Center, Inc. This content is not subject to CC BY 4.0.) Non-radiative mechanism in 2D semiconductor (C). (Figure 4B and C was reproduced from [38] (© 2020 Z. Xie et al., published by WILEY-VCH Verlag GmbH & Co. KGaA, distributed

Fragmentation of metal(II) bis(acetylacetonate) complexes induced by slow electrons

• Janina Kopyra and
• Hassan Abdoul-Carime

Beilstein J. Nanotechnol. 2023, 14, 980–987, doi:10.3762/bjnano.14.81

• represent a metal (Mn, Co, Ni, Cu, and Zn) and the acetylacetonate ligand, respectively. Previous reports were only dedicated to the mechanism and the energetics for the production of the two predominant species, that is, the parent [ML2]− anion and the ligand [L]− anion [15][16][17][18][19]. In addition to

• pathways (e.g., branching ratio), will be helpful for using this family of organometallic compounds. Results and Discussion The interaction of low-energy electrons with gaseous compounds ML2 (M: Mn, Co, Ni, Cu, and Zn; L: acac) produces the parent anion [ML2]− and the fragment anion [L]− as the predominant

• species (Figure 1). Further fragment anions were observed and they are shown below in Figures 2–6. The Ni, Co, and Zn complexes yield a larger number of anions (eleven anions from Ni and Co complexes and ten from the Zn-containing compound) than the other investigated organometallic compounds. Table 1

Isolation of cubic Si₃P₄ in the form of nanocrystals

• Polina K. Nikiforova,
• Sergei S. Bubenov,
• Vadim B. Platonov,
• Andrey S. Kumskov,
• Nikolay N. Kononov,
• Tatyana A. Kuznetsova and
• Sergey G. Dorofeev

Beilstein J. Nanotechnol. 2023, 14, 971–979, doi:10.3762/bjnano.14.80

• 520.8 cm−1. Interestingly, the observed Raman spectrum for SP900 is very similar to that of the product of silicon and phosphorus MBE co-deposition at 3:2 molar ratio [34]. This substance was reported as amorphous; however, it could contain Si3P4 NPs along with other SixPy compounds. Factor group

Metal-organic framework-based nanomaterials for CO₂ storage: A review

• Ha Huu Do,
• Iqra Rabani and
• Hai Bang Truong

Beilstein J. Nanotechnol. 2023, 14, 964–970, doi:10.3762/bjnano.14.79

• coworkers [21]. Under conditions of 296 K and 1 bar, the authors observed that Mg-MOF-74 exhibited the highest CO2 absorption capacity, reaching 8.0 mmol·g−1, followed by Co-MOF-74 with 7.0 mmol·g−1. In contrast, Zn-MOF-74 demonstrated the lowest performance, displaying an adsorption capacity of 5.5 mmol·g

• contribution in the field of mechanism studies was made by Valenzano and coworkers [25]. The recorded an adsorption angle of 129° for CO2 adsorption on Mg-MOF-74, which is smaller than the corresponding angles observed for N2 and CO, implying a stronger interaction between Mg-MOF-74 and CO2 (Figure 1). MOFs

• environmentally friendly methods for the synthesis of nanosized MOFs to cater to specific applications. Distances (Å) and angles of interaction between Mg-MOF-74, [Mg/DOBCD] (DOBCD: 2,5-dioxido-1,4-benzenedicarboxylate), with (a) CO, (b) N2, and (c) CO2. Figure 1 was reprinted with permission from [25]. Copyright

Low temperature atomic layer deposition of cobalt using dicobalt hexacarbonyl-1-heptyne as precursor

• Mathias Franz,
• Mahnaz Safian Jouzdani,
• Lysann Kaßner,
• Marcus Daniel,
• Frank Stahr and
• Stefan E. Schulz

Beilstein J. Nanotechnol. 2023, 14, 951–963, doi:10.3762/bjnano.14.78

• operates at low temperatures using dicobalt hexacarbonyl-1-heptyne [Co2(CO)6HC≡CC5H11] and hydrogen plasma. For this precursor an ALD window in the temperature range between 50 and 110 °C was determined with a constant deposition rate of approximately 0.1 Å/cycle. The upper limit of the ALD window is

• for the deposition of metallic cobalt including twelve plasma-assisted processes. Generally, these plasma-assisted ALD processes are reported to be carried out at temperatures above 100 °C. These processes use precursors such as CoCp2, Co(EtCp)2, or CpCo(CO)2 [12][13][14]. The commonly used precursor

• dicobalt hexacarbonyl tert-butylacetylene (CCTBA) can be used to deposit metallic cobalt in the temperature range from 125 to 200 °C [15]. As an exception, Kim et al. have reported the ALD of Co with Co2(CO)8 in the temperature range of 70 to 110 °C. However, this process resulted in a significant carbon

Prediction of cytotoxicity of heavy metals adsorbed on nano-TiO₂ with periodic table descriptors using machine learning approaches

• Joyita Roy,
• Souvik Pore and
• Kunal Roy

Beilstein J. Nanotechnol. 2023, 14, 939–950, doi:10.3762/bjnano.14.77

• metals, upon release and emission, may interact with different environmental components, which may lead to co-exposure to living organisms. Nanoscale titanium dioxide (nano-TiO2) can adsorb heavy metals. The current idea is that nanoparticles (NPs) may act as carriers and facilitate the entry of heavy

• metals has increased with anthropogenic and industrial activities [8][9]. TiO2 NPs commonly co-exist with different heavy metals as they are released from wastewater treatment facilities to freshwater bodies, affecting the mode of action and the fate of the contamination. Studies have reported the

• cause co-exposure effects on living organisms. The extensive use of heavy metals in areas such as medicine and agriculture increased the negative impact of heavy metals on environment and living organisms, raising the need for risk assessment. Unlike other pollutants, heavy metals do not decompose

Upscaling the urea method synthesis of CoAl layered double hydroxides

• Camilo Jaramillo-Hernández,
• Víctor Oestreicher,
• Martín Mizrahi and
• Gonzalo Abellán

Beilstein J. Nanotechnol. 2023, 14, 927–938, doi:10.3762/bjnano.14.76

• alkalinization rates and, concomitantly, the precipitation, even under recrystallization at high temperatures. In contrast, for the tenfold mass scale-up, similar morphological features were observed and assigned to changes in nucleation and growth. However, at higher concentrations, simonkolleite-like Co-based

• highlights the most critical synthesis aspects that must be controlled and provides various fingerprints to trace the quality of these materials. These results will contribute to bringing the use of these 2D layered materials closer to reality in different applications of interest. Keywords: Co-based

• layers containing MII and MIII octahedral cations connected by μ3-OH bridges that interact electrostatically with interlayer anions. Typically, LDHs can be represented by the chemical formula , where M represents cations (e.g., Mg, Zn, Co, Ni, Cu, Al, Fe, or Cr) and x the metallic ratio (typically, 0.20

Antibody-conjugated nanoparticles for target-specific drug delivery of chemotherapeutics

• Mamta Kumari,
• Amitabha Acharya and
• Praveen Thaggikuppe Krishnamurthy

Beilstein J. Nanotechnol. 2023, 14, 912–926, doi:10.3762/bjnano.14.75

• conditions for coupling. Shi et al. developed a polymeric nanoparticle system using biodegradable graft copolymers of (poly(TMCC-co-LA)-g-PEG-furan) to conjugate anti-HER2 antibodies through a Diels–Alder reaction. They used furan groups (diene), which are accessible for reaction with antibodies

Ni, Co, Zn, and Cu metal-organic framework-based nanomaterials for electrochemical reduction of CO₂: A review

• Ha Huu Do and
• Hai Bang Truong

Beilstein J. Nanotechnol. 2023, 14, 904–911, doi:10.3762/bjnano.14.74

• exhibited considerable variation depending on the elemental composition of pure metal catalysts [19]. Notably, Au, Ag, and Zn catalysts exhibit preferential CO generation, while Sn, In, and Pb catalysts prove effective in producing formate ions (HCOO−) [20]. Metal-organic frameworks (MOFs) are established

• pertaining to the implementation of MOF-based nanomaterials for the electrochemical conversion of CO2. First, the reaction pathway of the CO2 reduction is described for the production of different chemicals. Then, various structures, including Ni-, Co-, Zn-, and Cu-based MOFs for electrochemical CO2RR are

• transfer processes take place to create intermediates such as *CHO, *CO, and *COO. The process could include many electrons attending in the electrochemical reaction, and orientate the formed products. Finally, these species are desorbed from the active sites of electrocatalysts to generate various

Two-dimensional molecular networks at the solid/liquid interface and the role of alkyl chains in their building blocks

• Suyi Liu,
• Yasuo Norikane and
• Yoshihiro Kikkawa

Beilstein J. Nanotechnol. 2023, 14, 872–892, doi:10.3762/bjnano.14.72

• revealed for 2,6-bisalkoxy-substituted anthraquinone derivatives within the alkyl chain length range of C7–C18 [133]. STM, in conjunction with DSC studies, suggested that the balance between hydrogen bonding and dispersion interactions co-regulates Tm. Other substitution effects, such as different

• extension (Figure 16a). However, the meso-alkyne-substituted porphyrin (P-A) could be co-planar (Figure 16b). Therefore, P-A could form fully covered monolayers, even at a lower concentrations than P-N. This result suggests that alkynyl linkers contribute more to the monolayer stabilization of porphyrin

• (CC15–CC15) and heterogeneous (OC15F–CC15) dimers were clearly ascertained. This identification by STM and DFT calculations enabled the authors to propose a mechanism for a 2D structural diversification of the bicomponent blend. 7.3 Alkyl chains of solvent molecules Co-adsorption of the solvent can

N-Heterocyclic carbene-based gold etchants

• Robert B. Chevalier,
• Justin Pantano,
• Matthew K. Kiesewetter and
• Jason R. Dwyer

Beilstein J. Nanotechnol. 2023, 14, 865–871, doi:10.3762/bjnano.14.71

• resonance in solution-phase samples [15][18][19][20][21][22]. In these works, the NHC monolayer films were formed using several different approaches and preparations [16]. Indeed, a recent feature article highlights four methods to prepare NHC films [16]. For example, Crudden and co-workers have presented

• water and carbon dioxide so that there was no need for a strong base for deprotonation or for air-free conditions [13][14]. Camden and co-workers have used CO2 adducts of benzimidazolium to produce NHC films by melting the solid CO2 adduct directly onto a gold surface under vacuum. They have also

Industrial perspectives for personalized microneedles

• Remmi Danae Baker-Sediako,
• Benjamin Richter,
• Matthias Blaicher,
• Michael Thiel and
• Martin Hermatschweiler

Beilstein J. Nanotechnol. 2023, 14, 857–864, doi:10.3762/bjnano.14.70

• Remmi Danae Baker-Sediako Benjamin Richter Matthias Blaicher Michael Thiel Martin Hermatschweiler Nanoscribe Gmbh & Co, Hermann-von-Helmholtz-Platz 6, 76344 Eggenstein-Leopoldshafen, Germany 10.3762/bjnano.14.70 Abstract Microneedles and, subsequently, microneedle arrays are emerging miniaturized

• microoptic fabrication, grayscale lithography offers a solution to mitigate the staircase effect. Grayscale lithography is a novel approach in photolithography for 2.5D patterning (x,y,z) with ultrasmooth surfaces that exhibits improved shape accuracy [57][58]. In 2019, Nanoscribe GmbH & Co launched the

• free-standing 3D structures for the first time [62]. They also demonstrated that 3D printing by 2GL® was faster with better surface quality and shape accuracy than 2PP layer-by-layer methods [62]. Currently, Nanoscribe GmbH & Co is exploring 2GL® in three dimensions, and we look forward to the

A wearable nanoscale heart sound sensor based on P(VDF-TrFE)/ZnO/GR and its application in cardiac disease detection

• Yi Luo,
• Jian Liu,
• Jiachang Zhang,
• Yu Xiao,
• Ying Wu and
• Zhidong Zhao

Beilstein J. Nanotechnol. 2023, 14, 819–833, doi:10.3762/bjnano.14.67

• Figure 1. First, P(VDF-TrFE) powder (Solvay, France, molar ratio 7:3) was mixed with N,N-dimethylamide (DMF, Acros) and acetone (Sinopharm Chemical Reagent Co., Ltd., evaporation residue <0.001%) in a mixed solution with a 3:2 volume ratio. The mass fraction of P(VDF-TrFE) was 12%. Second, the reagent

• bottle was sealed and placed in a shaking mixer and shaken for 3 h. Next, ZnO nanoparticles (Shanghai Keyan Industrial Co., Ltd., particle size 3 ± 5 nm, content ≥99.8%) and GR filler (Shenzhen Turing Evolution Technology Co., Ltd., carbon content 98%, average diameter/thickness ratio = 9500) were added

Nanostructured lipid carriers containing benznidazole: physicochemical, biopharmaceutical and cellular in vitro studies

• Giuliana Muraca,
• María Esperanza Ruiz,
• Rocío C. Gambaro,
• Sebastián Scioli-Montoto,
• María Laura Sbaraglini,
• Gisel Padula,
• José Sebastián Cisneros,
• Cecilia Yamil Chain,
• Vera A. Álvarez,
• Cristián Huck-Iriart,
• Guillermo R. Castro,
• María Belén Piñero,
• Matias Ildebrando Marchetto,
• Catalina Alba Soto,
• Germán A. Islan and
• Alan Talevi

Beilstein J. Nanotechnol. 2023, 14, 804–818, doi:10.3762/bjnano.14.66

• obtained after infecting Vero cells at a multiplicity of infection (MOI) of 1:2. In vitro anti-trypomastigote effect A trypomastigote suspension (1 × 105 trypomastigotes per well) was co-cultured in a 96 well-plate with dilutions of both a solution of the free drug and of the nanoparticle formulations

Silver nanoparticles loaded on lactose/alginate: in situ synthesis, catalytic degradation, and pH-dependent antibacterial activity

• Nguyen Thi Thanh Tu,
• T. Lan-Anh Vo,
• T. Thu-Trang Ho,
• Kim-Phuong T. Dang,
• Van-Dung Le,
• Phan Nhat Minh,
• Chi-Hien Dang,
• Vinh-Thien Tran,
• Van-Su Dang,
• Tran Thi Kim Chi,
• Hieu Vu-Quang,
• Radek Fajgar,
• Thi-Lan-Huong Nguyen,
• Van-Dat Doan and
• Thanh-Danh Nguyen

Beilstein J. Nanotechnol. 2023, 14, 781–792, doi:10.3762/bjnano.14.64

• (0–180 min), and weight ratio of silver to Lac/Alg composite (0.1:1 to 0.7:1 (w/w)), was scrutinized using UV–vis measurements (UV-5100, Shanghai Metash Intruments Co. Ltd) in the range of 350–600 nm. For investigating the influence of temperature, a ratio of silver to Lac/Alg composite of 0.6:1 was

Carboxylic acids and light interact to affect nanoceria stability and dissolution in acidic aqueous environments

• Matthew L. Hancock,
• Eric A. Grulke and
• Robert A. Yokel

Beilstein J. Nanotechnol. 2023, 14, 762–780, doi:10.3762/bjnano.14.63

• aggregation of nanoceria was also shown by Muhammad and co-workers [35]. TEM analysis TEM analysis was conducted on two samples, citric and β-hydroxybutyric acid, to compare to the DLS results. They were chosen to represent samples from groups one and four. In the presence of light, nanoceria exposed to

• solution pH and sodium nitrate to adjust the osmolarity. In addition to the 16 carboxylic acids, ascorbic acid, studied by Muhammad et al. [35], was included. A 20 mM sodium salt was used by Dahle and co-workers [32]. This concentration was replicated in this experiment, corresponding to 20 mM NaNO3

Control of morphology and crystallinity of CNTs in flame synthesis with one-dimensional reaction zone

• Muhammad Hilmi Ibrahim,
• Norikhwan Hamzah,
• Mohd Zamri Mohd Yusop,
• Ni Luh Wulan Septiani and
• Mohd Fairus Mohd Yasin

Beilstein J. Nanotechnol. 2023, 14, 741–750, doi:10.3762/bjnano.14.61

• flame is conducted regarding the morphology and crystallinity of the as-grown nanotubes. The premixed burner configuration created a flame that is stabilized through axisymmetric stagnation flow through sintered metal with one-dimensional geometry, different from a conventional co-flow flame. The

• arrangement and grow vertically from the substrate [20]. Said growth model is similar to the mechanism proposed by Baker and co-workers [21][22][23]. At elevated temperatures, catalytic particles are formed on the substrate surface, and hydrocarbon molecules that undergo cracking in the flame diffuse to the