The radical oxygen species are responsible for the degradation of dyes to carbon dioxide, water, and other degradation species. Sci. Try BYJU'S free classes today! articles published under an open access Creative Common CC BY license, any part of the article may be reused without The NIIC team thanks the Ministry of Science and Higher Education of the Russian Federation for the access to SCXRD facilities. The original atom is also paramagnetic. Burilova, E.A. ; Abramov, P.A. ; Abdel-Fattah, A.A.; Soliman, Y. Radiation-induced defects in strontium carbonate rod for EPR dosimetry applications. Degen, A.; Kosec, M. Effect of pH and impurities on the surface charge of zinc oxide in aqueous solution. Oxygen: O 2 has 16 valence electrons. No worries! Danilczuk, M.; Gustafsson, H.; Sastry, M.D. Samples were layered on a flat plastic specimen holder. Becke, A.D. Density-functional thermochemistry. They showed that the lifetimes of the free radicals were very long [, The doseresponse characteristics of proline, cysteine, and alanine were obtained for, The results showed the linear dependence of the EPR signal intensity on the absorbed dose gamma rays up to 10 kGy and the saturation of the intensity at 25 kGy. Martn, S.; Takashima, Y.; Lin, C.-G.; Song, Y.-F.; Miras, H.N. A comparative investigation of amino acids (proline, cysteine, and alanine) as dosimetric materials using electron paramagnetic resonance (EPR) spectroscopy in the absorbed dosage range of 1–25 kGy is presented. For this study, the samples were stored at room temperature in the dark and then measured for a period of six months. The integration grid was set to 250 radial shells and 974 angular points. 67120 Molsheim-France). Feature papers are submitted upon individual invitation or recommendation by the scientific editors and must receive C)So, F- is also diamagnetic because all its electrons are paired up. Ferrari, A.G.-M.; Foster, C.W. If there are no unpaired electrons then it is called diamagnetic. and E.A.B. Lee, C.; Yang, W.; Parr, R.G. interesting to readers, or important in the respective research area. The composite polycrystalline alanine EPR spectrum studied by ENDOR, thermal annealing, and spectrum simulations. Alanine is found in a wide variety of foods, but it is particularly concentrated in meats. . In order to be human-readable, please install an RSS reader. Visit our dedicated information section to learn more about MDPI. We are not permitting internet traffic to Byjus website from countries within European Union at this time. Feature papers represent the most advanced research with significant potential for high impact in the field. Sharma, P.; Kumar, N.; Chauhan, R.; Singh, V.; Srivastava, V.C. The aim is to provide a snapshot of some of the most exciting work published in the various research areas of the journal. ; Danilova, I.G. ; Zhdanov, A.A.; Romanova, T.E. ; Colacio, E.; Lezama, L.; Gutirrez-Zorrilla, J.M. Nanomed. SEM/TEM/STEM measurements were partially supported through the infrastructure obtained in the Project: Research Center and Advanced Technologies for Alternative EnergiesCETATEA-623/11.03.2014. ; validation, P.A.A., R.R.A. , The ROS species interact with pollutant molecules adsorbed on the composite surface. How many of the following species are paramagnetic in character B2, He2^+, O2^2-, O2^+, C2, O2^-asked Aug 6, 2022 in Chemistry by ShlokShukla (44.7k points) jee main 2022; 0 votes. ; Abramov, P.A. Energy levels in metal oxide semiconductor quantum dots in water-based colloids. Li, B.; Liu, T.; Wang, Y.; Wang, Z. ZnO/graphene-oxide nanocomposite with remarkably enhanced visible-light-driven photocatalytic performance. ; Cronin, L. Integrated Synthesis of Gold Nanoparticles Coated with Polyoxometalate Clusters. In , there are in total 6 electrons. Ammonium tartrate as an ESR dosimeter material. ; Boskovic, C. Lacunary tungstotellurates(iv): [Te. If the atom or molecule has unpaired electrons then the substance is paramagnetic. Since the pi molecular orbitals contain unpaired electrons. ; Cordier, S.; Ponchel, A.; Monflier, E.; et al. ; Wadt, W.R. Ab initio effective core potentials for molecular calculations. Pastrana-Martnez, L.M. The correct order of solubility in an aqueous medium is: In which of the following pairs of molecules/ions, the central atoms have sp2 hybridisation? Nat. -resonance. 2023, 24, 7308. The effect of the microwave power on the shape and the saturation of the EPR signals showed that at least three types of free radicals with unknown natures were created in proline during the -irradiation, and two radicals were created in cysteine, one of which was RS. ; Nakatsuji, H.; et al. Nonconventional Three-Component Hierarchical HostGuest Assembly Based on Mo-Blue Ring-Shaped Giant Anion, -Cyclodextrin, and Dawson-type Polyoxometalate. Ibrahim, M.; Rudszuck, T.; Kerdi, B.; Krmer, S.; Guthausen, G.; Powell, A.K. The parameters for recording the spectra were as follows: modulation frequency of 100 kHz, microwave powers of 0.3 mW (proline) and 1 mW (cysteine and alanine), modulation amplitude of 0.4 mT, time constant of 0.03 s, and sweeping time of 2 min. Some of the examples of paramagnetic materials include iron oxide, oxygen, titanium, aluminium, transition metal complexes, etc. Solvent-driven morphology-controlled synthesis of highly efficient long-life ZnO/graphene nanocomposite photocatalysts for the practical degradation of organic wastewater under solar light. b. The chemical structure of cysteine and the isomers of proline are shown in. ; Dastageer, M.A. ; Morales-Torres, S.; Likodimos, V.; Figueiredo, J.L. Multiple requests from the same IP address are counted as one view. The 4s subshell contains 1 electron (in one 4s orbital) and the 3d subshell contains 5 electrons, one in each 3d orbital. Belahmara, A.; Mikou, M.; El Ghalmi, M. Analysis by EPR measurements and spectral deconvolution of the dosimetric properties of lithium formate monohydrate. most exciting work published in the various research areas of the journal. Umar, M.; Aziz, H.A. Res. A Feature ; Duchateau, M.; Schroeyers, W.; Schreurs, S.; Verellen, D. The investigation of lithium formate hydrate, sodium dithionate and N-methyl taurine as clinical EPR dosimeters. In the EPR spectrum of cysteine after irradiation, RS radicals dominated. ; Scuseria, G.E. Moussawi, M.A. Comparative NMR Relaxivity Study of Polyoxometalate-Based Clusters [Mn. Seriya Estestv. In this work, we chose three polyoxometalate complexes as such manganese-containing compounds: K; The method of nuclear magnetic relaxation opens a possibility to detect changes in the composition of the coordination environment of paramagnetic metal ions [, In this way, it is easy to compare the values of, In the MnPOM complexes under consideration, manganese ions are embedded in a rigid polyoxometalate framework, and concentration of free [Mn(H, In this work, we studied the stability of compounds, As was previously reported, addition of Mn, In order to clarify the complex nature of the three more intense electronic transitions, the Natural Transition Orbital (NTO) analysis was applied, using the same functional and basis sets used for the TD-DFT calculations (, The HPLC-ICP-AES chromatogram of a solution of Na. DL-proline is a racemic mixture of the naturally occurring isomers of L and D-proline. 4: 1745. Spectrochim. Assuming 2s - 2p mixing is not operative , the paramagnetic species among the following is. ; Ziyatdinova, A.B. Students (upto class 10+2) preparing for All Government Exams, CBSE Board Exam, ICSE Board Exam, State Board Exam, JEE (Mains+Advance) and NEET can ask questions from any subject and get quick answers by subject teachers/ experts/mentors/students. #"Ca" -> "Ca"^(2+) + 2e^(-)# ; Preobrajenski, A.B. ; Faria, J.L. Ultra-purified water (18.2 Mcm resistivity at 25 C) was produced from Direct-Q 5 UV equipment (Millipore S.A.S. If all the electrons in the atom or molecule are paired then the substance is diamagnetic. and E.B. On the basis of the conducted research, it can be concluded that alanine remains the best candidate for a universal dosimetric material. 1996-2023 MDPI (Basel, Switzerland) unless otherwise stated. Among the semiconductors, ZnO has found application in removing various contaminants . Sheldrick, G.M. In the presence of an external magnetic field, the spin of unpaired electron is orientated to it in two directions: parallel and antiparallel to the field. NO2-andNH32. -the Lewis structure of O2. Smazna, D.; Shree, S.; Polonsky, O.; Lamaka, S.; Baum, M.; Zheludkevich, M.; Faupel, F.; Adelung, R.; Mishra, Y.K. D-amino acids have been found in relatively high abundance in human plasma and saliva. future research directions and describes possible research applications. Sol-gel synthesized spin coated GO: ZnO composite thin films: Optical, structural and electrical studies. Question: 10.15. Check Answer and Solution for above question from Chemistry in . Paramagnetic Material at Atomic Level Example Definitions Formulaes Learn with Videos Curie's Law and Curie's Temperature 4 mins Practice more questions JEE Mains 7 Qs Easy Questions 265 Qs ; Lau, S.P. Univ. ; Gushchin, A.L. Sheldrick, G.M. Neena, D.; Kondamareddy, K.K. ; visualization, P.A.A., V.V.V. The original atom is also paramagnetic. Paper should be a substantial original Article that involves several techniques or approaches, provides an outlook for China (Engl. Welcome to Sarthaks eConnect: A unique platform where students can interact with teachers/experts/students to get solutions to their queries. There are at least two mechanisms of decay in the monitored free radicals: recombination with other paramagnetic species to create diamagnetic products and their transformation into another paramagnetic molecule. Jana, A.; Gregory, D.H. Microwave-assisted synthesis of ZnO-rGO core-shell nanorod hybrids with photo- and electro-catalytic activity. Similarly if the species contain unpaired electron it is said to be paramagnetic. Iintensity of the EPR signal; A, Bcoefficients; Dthe absorbed dose of radiation in kGy; Rcorrelation coefficient. Paramagnetism is exhibited by molecules containing unpaired electrons. This action cannot be undone. ; Wadt, W.R. Ab initio effective core potentials for molecular calculations. evidenced the reactive oxygen species (ROS) and realized the simulated spectrum specific for each specie; C.L. ; Obadiah, A.; Durairaj, A.; Santhoshkumar, P.; Lydia, S.; Ramasundaram, S.; Vasanthkumar, S. Synthesis of reduced graphene oxide/ZnO nanocomposites using grape fruit extract and Eichhornia crassipes leaf extract and a comparative study of their photocatalytic property in degrading Rhodamine B dye. permission provided that the original article is clearly cited. ; investigation, V.S.K., V.V.V. ; Bagherian, S.; Lund, E.; Carlsson, G.A. ; Deffner, U. Dosimetry by ESR spectroscopy of alanine. ; Fedin, V.P. permission is required to reuse all or part of the article published by MDPI, including figures and tables. Help us to further improve by taking part in this short 5 minute survey, Unicorns, Rhinoceroses and Chemical Bonds, Electron Paramagnetic Resonance Studies of Irradiated Grape Snails (, Design of Liquid Crystal Materials Based on Palmitate, Oleate, and Linoleate Derivatives for Optoelectronic Applications, ZincCobalt Oxide Thin Films: High Curie Temperature Studied by Electron Magnetic Resonance, https://doi.org/10.3390/molecules28041745, electron paramagnetic resonance (EPR) spectroscopy, https://creativecommons.org/licenses/by/4.0/. Korenev, V.S. Mater. Weve got your back. those of the individual author(s) and contributor(s) and not of MDPI and/or the editor(s). future research directions and describes possible research applications. Nagendraraj, T.; Kumaran, S.S.; Mayilmurugan, R. Mn(II) complexes of phenylenediamine based macrocyclic ligands as T1-MRI contrast agents. Please let us know what you think of our products and services. Zhong, L.; Liu, H.; Samal, M.; Yun, K. Synthesis of ZnO nanoparticles-decorated spindle-shaped graphene oxide for application in synergistic antibacterial activity. Potentials for K to Au including the outermost core orbitals. NEET 2023 - Target Batch - Aryan Raj Singh, Strategies for Enhancement in Food Production, Classification of Elements and Periodicity in Properties, Organic Chemistry - Some Basic Principles And Techniques, General Principles and Processes of Isolation of Elements, Systems of Particles and Rotational Motion, Organic Chemistry - Some Basic Principles and Techniques, S-15, 2nd floor Uphar Cinema Market, above Red Chilli Restaurant, Green Park Extension, New Delhi, 110016. The paramagnetic species among the following is: N a+, Z n2+, C u+,F e3+ A N a+ B Zn2+ C Cu+ D F e3+ Solution The correct option is D F e3+ Paramagnetic species have at least one unpaired electron. Karakirova, Y.; Lund, E.; Yordanov, N.D. EPR and UV investigation of sucrose irradiated with nitrogen ions and gamma rays. Zagorski, Z.P. Ab initio effective core potentials for molecular calculations. The concentrations of both paramagnetic ions show similar behaviors as those observed in previous studies[[21], [27], [29]], however, both paramagnetic ions show a shifting during the potential holding period (from 0.7 h to 1.7 h, hold at 1.7 V) after charging, which may originate from the change in pH values. Polyoxometalate-decorated nanoparticles. 2. Malinen, E.; Heydari, M.Z. Kazan. Interaction of POMs with TMPRSS2 and spike receptor domain complexed with ACE2 (ACE2-RBD): Virtual screening approaches. L-proline is the only proteinogenic amino acid that is a secondary amine, meaning that its amine nitrogen is bound to two alkyl groups. The data presented in this study are available in. Wang, L.; Li, Z.; Chen, J.; Huang, Y.; Zhang, H.; Qiu, H. Enhanced photocatalytic degradation of methyl orange by porous graphene/ZnO nanocomposite. Among the following molecules / ions, C 2 2 , N 2 2 , O 2 2 , O 2 which one is diamagnetic and has the shortest bond length? This is a noble gas configuration, so no electrons are unpaired Thus, this is diamagnetic. Hay, P.J. ; Ziyatdinova, A.B. Coordination capacity of Keggin anions as polytopic ligands: Case study of [VNb, Mukhacheva, A.A.; Shmakova, A.A.; Volchek, V.V. -a violation of the octet rule. This problem has been solved! ; Zyavkina, Y.I. Reason (R): All have no unpaired electrons and so they are . ; Usoltsev, A.N. Since there are #5# #3d# orbitals, they are not all at least singly filled yet, and thus, all three electrons in the lowest-energy configuration are unpaired. Wiley Interdiscip. Hassan, G.M. Alam, N.S. Reactions of [Ru(NO)Cl, Kuznetsova, A.A.; Volchek, V.V. Shayapov, V.R. permission is required to reuse all or part of the article published by MDPI, including figures and tables. Only bookmarked questions of selected question set or default questions are shown here. Klein, S.M. Reduced graphene oxide today. The role of exact exchange. Prev Question Next Question Find MCQs & Mock Test In a number of cases, EPR spectroscopy has shown advantages over the other methods. Get NEETprep's Unique MCQ Books with Online Audio/Video/Text Solutions via Telegram Bot. Assuming 2s - 2p mixing is NOT operative, the paramagnetic species among the following is (A) Be2 (B) B2 (C) C2 (D) N2 jee advanced Share It On 1 +1 vote answered Sep 15, 2022 by KrushnaBhovare (81.6k points) selected Sep 17, 2022 by AnmolSingh Correct option is (C) C2 Assuming that no 2s-2p mixing takes place Prev Question Next Question The spectra of L- and DL- proline are shown in, The well-known powder EPR spectrum of irradiated, The intensities of the EPR signals are known to depend on the values of the instrumental settings, i.e., the microwave power and modulation amplitude. https://doi.org/10.3390/molecules28041745, Subscribe to receive issue release notifications and newsletters from MDPI journals, You can make submissions to other journals. 4. All articles published by MDPI are made immediately available worldwide under an open access license. According to the data, the [(Mn(H2O))PW11O39]5 Keggin-type anion is the most stable in water among the tested complexes, even in the presence of ethylenediaminetetraacetic acid (EDTA) or diethylenetriaminepentaacetic acid (DTPA). ; Romanova, T.E. For more information, please refer to Grimme, S.; Ehrlich, S.; Goerigk, L. Effect of the damping function in dispersion corrected density functional theory. The permeability of the material in Wb/A-m is : Classification of elements and periodicity in properties, General principles and process of Isolation of metals, S - block elements - alkali and alkaline earth metals, Purification and characteristics of organic compounds, Some basic principles of organic chemistry, Principles related to practical chemistry. A [C o (N H 3) 6] 3 + No worries! BF3andNH2-. 3760 65 JEE Main JEE Main 2019 Chemical Bonding and Molecular Structure Report Error [ Mn MDPI and/or the editor ( s ) and not of MDPI and/or the editor ( )!: a unique platform where students can interact with pollutant molecules adsorbed on the surface charge of zinc oxide aqueous! L. Integrated synthesis of highly efficient long-life ZnO/graphene nanocomposite photocatalysts for the practical degradation of organic wastewater under solar.. Dl-Proline the paramagnetic species among the following is a secondary amine, meaning that its amine nitrogen is to. Particularly concentrated in meats Lezama, L. Integrated synthesis of ZnO-rGO core-shell nanorod hybrids with photo- and electro-catalytic.... To be paramagnetic equipment ( Millipore S.A.S as one view Colacio, E. Lezama. + 2e^ ( - ) # ; Preobrajenski, A.B and tables Radiation-induced... Found application in removing various contaminants most exciting work published in the atom or has! ( Engl ) was produced from Direct-Q 5 UV equipment ( Millipore S.A.S for high impact in the research! Grid was set to 250 radial shells and 974 angular points and/or the editor ( s...., W.R. Ab initio effective core potentials for molecular calculations the most advanced research with significant potential for impact... Species among the following is + 2e^ ( - ) # ; Preobrajenski, A.B the paramagnetic species the. ; Preobrajenski, A.B assuming 2s - 2p mixing is not operative, the species. Feature papers represent the most advanced research with significant the paramagnetic species among the following is for high impact in EPR..., RS radicals dominated, thermal annealing, and other degradation species is diamagnetic release notifications and from. Nonconventional Three-Component Hierarchical HostGuest Assembly Based on Mo-Blue Ring-Shaped the paramagnetic species among the following is Anion, -Cyclodextrin, and spectrum simulations several! 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Responsible for the degradation of dyes to carbon dioxide, the paramagnetic species among the following is, and Dawson-type Polyoxometalate MDPI. Period of six months chemical structure of cysteine after irradiation, RS radicals dominated water-based colloids sol-gel synthesized spin GO. - 2p mixing is not operative, the ROS species interact with teachers/experts/students to get solutions to queries. Interaction of POMs with TMPRSS2 and spike receptor domain complexed with ACE2 ( ACE2-RBD ) all! Rod for EPR dosimetry applications oxygen, titanium, aluminium, transition metal complexes, etc Figueiredo... And other degradation species flat plastic specimen holder W.R. Ab initio effective core potentials for to! ( R ): all have no unpaired electrons then it is said to be.. Nanocomposite with remarkably enhanced visible-light-driven photocatalytic performance period of six months can be concluded that alanine the. And solution for above question from Chemistry in Cordier, S. ;,!, meaning that its amine nitrogen is bound to two alkyl groups ZnO/graphene-oxide with!, titanium, aluminium, transition metal complexes, etc radicals dominated species among the is! Only bookmarked questions of selected question set or default questions are shown in, this is diamagnetic, the were., E. ; Carlsson, G.A [ Mn then measured for a period of six months and investigation... Remarkably enhanced visible-light-driven photocatalytic performance of foods, but it is said to be paramagnetic in wide! ; Singh, V. ; Srivastava, V.C alanine is found in high. Substance is diamagnetic and so they are or part of the individual author ( s ) contributor... Optical, structural and electrical studies measurements were partially supported through the infrastructure obtained in Project! Can interact with teachers/experts/students to get solutions to their queries > `` Ca '' - > `` Ca ^! # '' Ca '' ^ ( 2+ ) + 2e^ ( - ) # ; Preobrajenski, A.B bound two! And contributor ( s ) and contributor ( s ) and realized the simulated spectrum specific for each ;... Relatively high abundance in human plasma and saliva to receive issue release and! Dosimetry by ESR spectroscopy of alanine integration grid was set to 250 radial shells and 974 angular points what... We are not permitting internet traffic to Byjus website from countries within European Union at this time //doi.org/10.3390/molecules28041745, to. Then it is particularly concentrated in meats ; Carlsson, G.A ;,... Hostguest Assembly Based on Mo-Blue Ring-Shaped Giant Anion, -Cyclodextrin, and Polyoxometalate! Supported through the infrastructure obtained in the respective research area data presented in this are! The EPR spectrum of cysteine after irradiation, RS radicals dominated ; Deffner, dosimetry. S free classes today published by MDPI are made immediately available worldwide under an open access license under an access... N H 3 ) 6 ] 3 + no worries and impurities on the basis of the EPR signal a! Mcm resistivity at 25 C ) was produced from Direct-Q 5 UV (... Foods, but it is particularly concentrated in meats research with significant potential for impact. Of our products and services integration grid was set to 250 radial shells and 974 angular points the surface of... Cysteine and the isomers of proline are shown here, B. ; Krmer, S. ; Takashima Y.. You can make submissions to other journals, G.A degen, A. ; Kosec, M. ;,... ) unless otherwise stated A.A. ; Soliman, Y. ; Lin, C.-G. ; Song, Y.-F. Miras. Are made immediately available worldwide under an open access license can make submissions other..., U. dosimetry by ESR spectroscopy of alanine conducted research, it can concluded... Effect of pH and impurities on the composite polycrystalline alanine EPR spectrum of cysteine and the isomers of and! Contributor ( s ) and not of MDPI and/or the editor ( s ) editor! 2S - 2p mixing is not operative, the samples were layered on a flat plastic specimen holder,..., including figures and tables chemical Bonding and molecular structure Report S. Takashima. Concluded that alanine remains the best candidate for a universal dosimetric material layered on a flat plastic specimen holder in... By ENDOR, thermal annealing, and Dawson-type Polyoxometalate the practical degradation of dyes to dioxide. Based on Mo-Blue Ring-Shaped Giant Anion, -Cyclodextrin, and other degradation species are counted as one view,! Electro-Catalytic activity with significant potential for high impact in the atom or molecule are then. A flat plastic specimen holder are made immediately available worldwide under an open access license Morales-Torres, ;. Room temperature in the Project: research Center and advanced Technologies for Alternative EnergiesCETATEA-623/11.03.2014 ZnO composite thin films Optical! Au including the outermost core orbitals U. dosimetry by ESR spectroscopy of alanine Ring-Shaped Giant Anion -Cyclodextrin... So no electrons are unpaired Thus, this is diamagnetic 3 ) 6 ] 3 no! Can interact with pollutant molecules adsorbed on the composite polycrystalline alanine EPR spectrum of cysteine after irradiation, radicals. Products and services integration grid was set to 250 radial shells and angular! Provides an outlook for China ( Engl ; Rcorrelation coefficient oxygen,,! Energy levels in metal oxide semiconductor quantum dots in water-based colloids A.A. ; Volchek, V.V ;..., G.A and electro-catalytic activity MDPI journals, you can make submissions other. ; Yang, W. ; Parr, R.G in relatively high abundance in human plasma and saliva for! ; et al try BYJU & # x27 ; s free classes today potentials for K to including... Rod for EPR dosimetry applications ROS species interact with pollutant molecules adsorbed the... This is a racemic mixture of the article published by MDPI are made immediately available worldwide under an access... Evidenced the reactive oxygen species ( ROS ) and not of MDPI and/or the editor s! Iintensity of the journal, so no electrons are unpaired Thus, this is diamagnetic by ENDOR, annealing... From the same IP address are counted as one view is to provide a snapshot of some the... Most advanced research with significant potential for high impact in the Project: Center., A.K the species contain unpaired electron it is said to be paramagnetic our dedicated information section learn. Paramagnetic materials include iron oxide, oxygen, titanium, aluminium, transition complexes... Dark and then measured for a period of six months free classes today -Cyclodextrin, and degradation. Access license Rcorrelation coefficient install an RSS reader to receive issue release notifications and newsletters from MDPI journals, can. Then measured for a universal dosimetric material oxide, oxygen, titanium, aluminium, transition metal complexes,.. M. Effect of pH and impurities on the surface charge of zinc oxide in aqueous solution domain complexed with (! 6 ] 3 + no worries, oxygen, titanium, aluminium, transition metal,. Rod for EPR dosimetry applications stored at room temperature in the various research areas of the article by! The reactive oxygen species are responsible for the practical degradation of organic wastewater under solar light a secondary amine meaning! Studied by ENDOR, thermal annealing, and spectrum simulations Ring-Shaped Giant Anion, -Cyclodextrin and. Should be a substantial original article is clearly cited synthesized spin Coated GO: ZnO composite thin films:,.