Pub Date : 2021-04-13DOI: 10.1177/87560879211010313
Ayesha Kausar
Quantum dots are tiny (∼5 nm) nanoparticles with outstanding electronic, optical, luminescence, and semiconducting properties. Polymer dots are important and unique quantum dots. Polymer dots have been designed and used for advanced hybrid nanomaterials and applications. This review article deliberates scientific trials on design, fabrication, characteristics, and technical solicitations of polymer dot-based nanomaterials. Polymer dots are made from both conducting and non-conducting polymers with appropriate processing techniques. Polymer dots have facile surface modification tendencies. Functional polymer dots have an important use in hybrid/nanocomposite materials. Consequently, polymer dots have been combined with other quantum dots and nanoparticles to form advanced hybrid nanomaterials. Polymer dot-based nanomaterials have unique morphology, conductivity, electrochemical, luminescence, and sensing features. Subsequently, many applications are seen for polymer dot nanomaterials as solar cell, supercapacitor, electronics, probes, gas sensor, biosensor, bioimaging, and drug delivery.
{"title":"Polymer dots and derived hybrid nanomaterials: A review","authors":"Ayesha Kausar","doi":"10.1177/87560879211010313","DOIUrl":"https://doi.org/10.1177/87560879211010313","url":null,"abstract":"Quantum dots are tiny (∼5 nm) nanoparticles with outstanding electronic, optical, luminescence, and semiconducting properties. Polymer dots are important and unique quantum dots. Polymer dots have been designed and used for advanced hybrid nanomaterials and applications. This review article deliberates scientific trials on design, fabrication, characteristics, and technical solicitations of polymer dot-based nanomaterials. Polymer dots are made from both conducting and non-conducting polymers with appropriate processing techniques. Polymer dots have facile surface modification tendencies. Functional polymer dots have an important use in hybrid/nanocomposite materials. Consequently, polymer dots have been combined with other quantum dots and nanoparticles to form advanced hybrid nanomaterials. Polymer dot-based nanomaterials have unique morphology, conductivity, electrochemical, luminescence, and sensing features. Subsequently, many applications are seen for polymer dot nanomaterials as solar cell, supercapacitor, electronics, probes, gas sensor, biosensor, bioimaging, and drug delivery.","PeriodicalId":16823,"journal":{"name":"Journal of Plastic Film & Sheeting","volume":"35 1","pages":"510 - 528"},"PeriodicalIF":3.1,"publicationDate":"2021-04-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81432686","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-04-01DOI: 10.1177/87560879211005209
J. Wagner
{"title":"From the Editor","authors":"J. Wagner","doi":"10.1177/87560879211005209","DOIUrl":"https://doi.org/10.1177/87560879211005209","url":null,"abstract":"","PeriodicalId":16823,"journal":{"name":"Journal of Plastic Film & Sheeting","volume":"20 1","pages":"113 - 116"},"PeriodicalIF":3.1,"publicationDate":"2021-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75471097","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-04-01DOI: 10.1177/8756087920962545
M. Zahid, Nz Khan, A. Siddiqui, S. Iqbal, A. Muhammad, I. Tlili
This paper analyses an isothermal calendering for an upper convected Jeffery’s Material. Lubrication Approximation Theory (LAT) is applied to simplify the flow equations. Analytical solutions of velocity, flow rate, and pressure gradient are carried out. Outcomes of sheet thickness, detachment point, roll separating force, power input to the roll, and pressure distribution are obtained. The effects of some involved parameters are displayed through graphs and tables. It is noted that the material parameter is a controlling device for sheet thickness, flow rate, detachment point, roll separating force, power input, and the pressure distribution. We observed that as the material parameter increases, the detachment point increases which results in increased sheet thickness.
{"title":"Analysis of the lubrication approximation theory in the calendering/sheeting process of upper convected Jeffery’s material","authors":"M. Zahid, Nz Khan, A. Siddiqui, S. Iqbal, A. Muhammad, I. Tlili","doi":"10.1177/8756087920962545","DOIUrl":"https://doi.org/10.1177/8756087920962545","url":null,"abstract":"This paper analyses an isothermal calendering for an upper convected Jeffery’s Material. Lubrication Approximation Theory (LAT) is applied to simplify the flow equations. Analytical solutions of velocity, flow rate, and pressure gradient are carried out. Outcomes of sheet thickness, detachment point, roll separating force, power input to the roll, and pressure distribution are obtained. The effects of some involved parameters are displayed through graphs and tables. It is noted that the material parameter is a controlling device for sheet thickness, flow rate, detachment point, roll separating force, power input, and the pressure distribution. We observed that as the material parameter increases, the detachment point increases which results in increased sheet thickness.","PeriodicalId":16823,"journal":{"name":"Journal of Plastic Film & Sheeting","volume":"12 1","pages":"128 - 159"},"PeriodicalIF":3.1,"publicationDate":"2021-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74326199","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-02-27DOI: 10.1177/8756087921999094
Ayesha Kausar
There is rising interest in the development of poly(ethylene glycol) based nanocomposites. Poly(ethylene glycol) is a synthetic water soluble polyether polymerized from ethylene glycol monomer. Poly(ethylene glycol) matrix has been reinforced with various carbonaceous nanofillers such as graphene, graphene oxide, carbon nanotube, and nanodiamonds to form nanocomposites. In this state-of-the-art review, poly(ethylene glycol)/carbonaceous nanofiller nanocomposites and progress concerning the derived high performance nanomaterials are presented. The morphology, thermal, mechanical, electrical, and other characteristics are enhanced with the nanocarbon nanofillers. Modifying the poly(ethylene glycol) backbone and functionalizing the carbonaceous nanofiller improve the anticipated nanocomposite. Moreover, better nanoparticle dispersion and interaction with the poly(ethylene glycol) have been focused in this regard. Up till now, poly(ethylene glycol) nanocomposites have been researched for lithium ion battery, sensor, and biomedical applications particularly drug delivery and tissue engineering. Future research on poly(ethylene glycol)/carbonaceous nanofiller nanocomposites may help to overcome the challenges related to nanocomposite design and high performance, and may also open new application areas.
{"title":"Evolving scientific aptitude of poly(ethylene glycol) filled with carbonaceous nanofillers","authors":"Ayesha Kausar","doi":"10.1177/8756087921999094","DOIUrl":"https://doi.org/10.1177/8756087921999094","url":null,"abstract":"There is rising interest in the development of poly(ethylene glycol) based nanocomposites. Poly(ethylene glycol) is a synthetic water soluble polyether polymerized from ethylene glycol monomer. Poly(ethylene glycol) matrix has been reinforced with various carbonaceous nanofillers such as graphene, graphene oxide, carbon nanotube, and nanodiamonds to form nanocomposites. In this state-of-the-art review, poly(ethylene glycol)/carbonaceous nanofiller nanocomposites and progress concerning the derived high performance nanomaterials are presented. The morphology, thermal, mechanical, electrical, and other characteristics are enhanced with the nanocarbon nanofillers. Modifying the poly(ethylene glycol) backbone and functionalizing the carbonaceous nanofiller improve the anticipated nanocomposite. Moreover, better nanoparticle dispersion and interaction with the poly(ethylene glycol) have been focused in this regard. Up till now, poly(ethylene glycol) nanocomposites have been researched for lithium ion battery, sensor, and biomedical applications particularly drug delivery and tissue engineering. Future research on poly(ethylene glycol)/carbonaceous nanofiller nanocomposites may help to overcome the challenges related to nanocomposite design and high performance, and may also open new application areas.","PeriodicalId":16823,"journal":{"name":"Journal of Plastic Film & Sheeting","volume":"24 1","pages":"490 - 509"},"PeriodicalIF":3.1,"publicationDate":"2021-02-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85972611","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-02-01DOI: 10.1177/8756087920988569
Enni Luoma, M. Välimäki, Teijo Rokkonen, Hannu Sääskilahti, J. Ollila, J. Rekilä, K. Immonen
Flexible and hybrid electronics (FHE) are widely utilized from wearable to automotive applications. Instead of commonly used poly(ethylene terephthalate) (PET) film, bio-based and biodegradable polymer, poly(lactic acid) (PLA), is a most promising novel substrate alternative for FHE. From the point of heat curable conductive inks, the poor heat resistance and inherent brittleness are the major drawbacks of PLA. By increasing the PLA film crystallinity through orientation and annealing, its properties can be improved. Two commercial grades, standard PLA (PLA) and a high heat PLA (hhPLA), plus one stereocomplex PLA (scPLA) blend were used to compare PLA performance with different optical purities and crystallinity for printed FHE. Machine direction orientation (MDO), biaxial orientation (BO) and annealing improved the stability of the laboratory and pilot scale manufactured PLA films. MDO was more effective in improving stiffness and strength while BO resulted in more ductile behaviour. In hhPLA the crystallinity increased from 0% to 50% improving tensile strength by 83%, tensile modulus by 52% and strain at break from 3.7% to 114% with 3 × 3 BO and annealing. The scPLA blend contained homo- and stereocomplex crystallites and a double melting peak behaviour provided higher temperature stability through final melting at 220°C. Its optical transparency reached 95%, remaining high up to 250 nm wavelength. In roll-to-roll printing, the PLA and hhPLA films were dried at 100°C prior the printing and this decreased the MD elongation from 2.55% and 0.27% to 0.00–0.05%. The sheet resistance of printed silver was <40 mΩ/sq with additional drying for printed and hybrid integrated light-emitting diode (LED) foils. Printed LED foils on PLA had dimensional and electrical performance comparable to PET, even though lower drying temperatures were used.
{"title":"Oriented and annealed poly(lactic acid) films and their performance in flexible printed and hybrid electronics","authors":"Enni Luoma, M. Välimäki, Teijo Rokkonen, Hannu Sääskilahti, J. Ollila, J. Rekilä, K. Immonen","doi":"10.1177/8756087920988569","DOIUrl":"https://doi.org/10.1177/8756087920988569","url":null,"abstract":"Flexible and hybrid electronics (FHE) are widely utilized from wearable to automotive applications. Instead of commonly used poly(ethylene terephthalate) (PET) film, bio-based and biodegradable polymer, poly(lactic acid) (PLA), is a most promising novel substrate alternative for FHE. From the point of heat curable conductive inks, the poor heat resistance and inherent brittleness are the major drawbacks of PLA. By increasing the PLA film crystallinity through orientation and annealing, its properties can be improved. Two commercial grades, standard PLA (PLA) and a high heat PLA (hhPLA), plus one stereocomplex PLA (scPLA) blend were used to compare PLA performance with different optical purities and crystallinity for printed FHE. Machine direction orientation (MDO), biaxial orientation (BO) and annealing improved the stability of the laboratory and pilot scale manufactured PLA films. MDO was more effective in improving stiffness and strength while BO resulted in more ductile behaviour. In hhPLA the crystallinity increased from 0% to 50% improving tensile strength by 83%, tensile modulus by 52% and strain at break from 3.7% to 114% with 3 × 3 BO and annealing. The scPLA blend contained homo- and stereocomplex crystallites and a double melting peak behaviour provided higher temperature stability through final melting at 220°C. Its optical transparency reached 95%, remaining high up to 250 nm wavelength. In roll-to-roll printing, the PLA and hhPLA films were dried at 100°C prior the printing and this decreased the MD elongation from 2.55% and 0.27% to 0.00–0.05%. The sheet resistance of printed silver was <40 mΩ/sq with additional drying for printed and hybrid integrated light-emitting diode (LED) foils. Printed LED foils on PLA had dimensional and electrical performance comparable to PET, even though lower drying temperatures were used.","PeriodicalId":16823,"journal":{"name":"Journal of Plastic Film & Sheeting","volume":"305 1","pages":"429 - 462"},"PeriodicalIF":3.1,"publicationDate":"2021-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73468319","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-01-21DOI: 10.1177/8756087920988748
M. Javed, N. Ali, S. Arshad, Shahbaz Shamshad
This paper presents a numerical study of the calendering mechanism. The calendered material is represented using the Carreau-Yasuda fluid model. The governing flow equations in the calendering process are made first dimensionless then the lubrication approximation theory (LAT) is used to simplify them. The simplified flow equations are transformed into stream function and then are numerically solved. A numerical method is constructed with Matlab’s built-in-bvp4c routine to find the stream function and pressure gradient. We use the Runge-Kutta algorithm to calculate the pressure and mechanical quantities related to the calendering process. In this analysis the pressure distribution increases with increasing Weissenberg number, however the pressure domain length decreases as the Weissenberg number increases. The pressure inside the nip region decreases from its Newtonian value when the power law index is less than one (shear thinning), and the pressure profile increases from its Newtonian pressure when the power law index is greater than one(shear thickening). How the Carreau-Yasuda fluid model parameters influence the velocity and related calendering process quantities are also discussed via graphs.
{"title":"Numerical approach for the calendering process using Carreau-Yasuda fluid model","authors":"M. Javed, N. Ali, S. Arshad, Shahbaz Shamshad","doi":"10.1177/8756087920988748","DOIUrl":"https://doi.org/10.1177/8756087920988748","url":null,"abstract":"This paper presents a numerical study of the calendering mechanism. The calendered material is represented using the Carreau-Yasuda fluid model. The governing flow equations in the calendering process are made first dimensionless then the lubrication approximation theory (LAT) is used to simplify them. The simplified flow equations are transformed into stream function and then are numerically solved. A numerical method is constructed with Matlab’s built-in-bvp4c routine to find the stream function and pressure gradient. We use the Runge-Kutta algorithm to calculate the pressure and mechanical quantities related to the calendering process. In this analysis the pressure distribution increases with increasing Weissenberg number, however the pressure domain length decreases as the Weissenberg number increases. The pressure inside the nip region decreases from its Newtonian value when the power law index is less than one (shear thinning), and the pressure profile increases from its Newtonian pressure when the power law index is greater than one(shear thickening). How the Carreau-Yasuda fluid model parameters influence the velocity and related calendering process quantities are also discussed via graphs.","PeriodicalId":16823,"journal":{"name":"Journal of Plastic Film & Sheeting","volume":"34 1","pages":"312 - 337"},"PeriodicalIF":3.1,"publicationDate":"2021-01-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74040374","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-01-14DOI: 10.1177/8756087920979024
S. Khaliq, Z. Abbas
This paper numerically solves the third-order fluid flow during calendering with slip condition at the rolls. The basic equations are transformed into dimensionless forms and simplified by adopting LAT (Lubrication Approximation Theory). The flow equations are then solved with the perturbation technique. Whereas a finite difference scheme along with TDMA (Tridiagonal Matrix Algorithm) is implemented to solve the energy equation. Engineering parameters like power input, exit distance, and roll separating force are computed. The impact of slip parameter α and material parameter β on the velocity profile, pressure, pressure gradient, temperature profile, power input, detachment point, and roll separating force is portrayed through graphs and discussed. It is noticed that both the parameters α and β exhibit opposite behaviors and give insight to the mechanisms that control the physical and engineering parameters.
{"title":"Analysis of calendering process of non-isothermal flow of non-Newtonian fluid: A perturbative and numerical study","authors":"S. Khaliq, Z. Abbas","doi":"10.1177/8756087920979024","DOIUrl":"https://doi.org/10.1177/8756087920979024","url":null,"abstract":"This paper numerically solves the third-order fluid flow during calendering with slip condition at the rolls. The basic equations are transformed into dimensionless forms and simplified by adopting LAT (Lubrication Approximation Theory). The flow equations are then solved with the perturbation technique. Whereas a finite difference scheme along with TDMA (Tridiagonal Matrix Algorithm) is implemented to solve the energy equation. Engineering parameters like power input, exit distance, and roll separating force are computed. The impact of slip parameter α and material parameter β on the velocity profile, pressure, pressure gradient, temperature profile, power input, detachment point, and roll separating force is portrayed through graphs and discussed. It is noticed that both the parameters α and β exhibit opposite behaviors and give insight to the mechanisms that control the physical and engineering parameters.","PeriodicalId":16823,"journal":{"name":"Journal of Plastic Film & Sheeting","volume":"167 1","pages":"338 - 366"},"PeriodicalIF":3.1,"publicationDate":"2021-01-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73918230","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-01-05DOI: 10.1177/8756087920983551
M. Kanwal, Xinhua Wang, H. Shahzad, M. Sajid, Chen Yiqi
This article deals with the blade coating process for Johnson-Segalman (JS) fluid using plane coater. Flow equations are simplified with the Lubrication approximation theory (LAT). The equations are normalized using suitable scales. Reduced equations are solved numerically using the shooting technique. Also, for small Weissenberg numbers, a perturbation solution is obtained. How Weissenberg number and slip parameter influence the pressure gradient, velocity, pressure, load, and thickness are expressed graphically and via table. In the present work, load on the blade is crucial as it controls the thickness quality. One observes that an increased Weissenberg number decreases load, while the coating thickness increases when compared to the viscous case.
{"title":"Mathematical modeling of Johnson-Segalman fluid in blade coating process","authors":"M. Kanwal, Xinhua Wang, H. Shahzad, M. Sajid, Chen Yiqi","doi":"10.1177/8756087920983551","DOIUrl":"https://doi.org/10.1177/8756087920983551","url":null,"abstract":"This article deals with the blade coating process for Johnson-Segalman (JS) fluid using plane coater. Flow equations are simplified with the Lubrication approximation theory (LAT). The equations are normalized using suitable scales. Reduced equations are solved numerically using the shooting technique. Also, for small Weissenberg numbers, a perturbation solution is obtained. How Weissenberg number and slip parameter influence the pressure gradient, velocity, pressure, load, and thickness are expressed graphically and via table. In the present work, load on the blade is crucial as it controls the thickness quality. One observes that an increased Weissenberg number decreases load, while the coating thickness increases when compared to the viscous case.","PeriodicalId":16823,"journal":{"name":"Journal of Plastic Film & Sheeting","volume":"14 1","pages":"463 - 489"},"PeriodicalIF":3.1,"publicationDate":"2021-01-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77956590","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-01-01DOI: 10.1177/8756087920988463
J. Wagner
Layered silicates present interaction sites at both faces and edges of the nanolayers and silane coupling agents that locate at both sites lead to polymer nanocomposites with superior melt strength and properties. This work’s objective was (a) to investigate the effectiveness of solvent-free, vapor phase, silane treatment of the nanolayers for formulating masterbatches and (b) to compare the mechanical properties of 1mil thick blown films from polypropylene copolymer nanocomposites with such coupling, to films from the neat polypropylene. The nanocomposite blown film tensile modulus and tensile strength improved along both the draw direction and the transverse direction. In addition, their elongation to failure was close to 500% along both directions, in contrast to values of 500% along MD and 170% along TD for the neat PP copolymer. These trends may be understood in terms of the crystalline lamellar orientation distribution in the films. FESEM images revealed that cross-hatched lamellae were absent from the unfilled PP blown film and were pervasive in the nanocomposite blown film. The nanolayers were oriented in the film plane with the longer dimension largely along the MD. The lower extent of lamellar orientation around nanolayers may be attributed to the strong reduction in the polymer chain mobility attached to the nanolayers. Wagner 5
{"title":"From the Editor","authors":"J. Wagner","doi":"10.1177/8756087920988463","DOIUrl":"https://doi.org/10.1177/8756087920988463","url":null,"abstract":"Layered silicates present interaction sites at both faces and edges of the nanolayers and silane coupling agents that locate at both sites lead to polymer nanocomposites with superior melt strength and properties. This work’s objective was (a) to investigate the effectiveness of solvent-free, vapor phase, silane treatment of the nanolayers for formulating masterbatches and (b) to compare the mechanical properties of 1mil thick blown films from polypropylene copolymer nanocomposites with such coupling, to films from the neat polypropylene. The nanocomposite blown film tensile modulus and tensile strength improved along both the draw direction and the transverse direction. In addition, their elongation to failure was close to 500% along both directions, in contrast to values of 500% along MD and 170% along TD for the neat PP copolymer. These trends may be understood in terms of the crystalline lamellar orientation distribution in the films. FESEM images revealed that cross-hatched lamellae were absent from the unfilled PP blown film and were pervasive in the nanocomposite blown film. The nanolayers were oriented in the film plane with the longer dimension largely along the MD. The lower extent of lamellar orientation around nanolayers may be attributed to the strong reduction in the polymer chain mobility attached to the nanolayers. Wagner 5","PeriodicalId":16823,"journal":{"name":"Journal of Plastic Film & Sheeting","volume":"24 1","pages":"3 - 6"},"PeriodicalIF":3.1,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81147089","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
京公网安备 11010802042870号
京ICP备2023020795号-1
扫码关注我们
求助内容：
应助结果提醒方式：