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Investigation of shape memory effect in Ni-Ti based alloys Ni-Ti基合金形状记忆效应的研究
Communications in Physics Pub Date : 2021-09-27 DOI: 10.15625/0868-3166/15702
Dan Nguyen Huy, Xuan Hau Kieu, Hai Yen Nguyen, T. Pham, H.N. Nguyen, Doan Nuoi Dang, D. Tran
{"title":"Investigation of shape memory effect in Ni-Ti based alloys","authors":"Dan Nguyen Huy, Xuan Hau Kieu, Hai Yen Nguyen, T. Pham, H.N. Nguyen, Doan Nuoi Dang, D. Tran","doi":"10.15625/0868-3166/15702","DOIUrl":"https://doi.org/10.15625/0868-3166/15702","url":null,"abstract":"Shape memory alloys (SMAs) are ones which can return to their original shape under impact of temperature or external magnetic field. The SMAs are capable of many applications in the fields of biomedical, aerospace, microelectronics, automation, for examples, orthodontics, stents, bone anchors, automatic valves, heat sensors, nanotweezers, robots... Recently, researchers have discovered the shape memory effect (SME) on high entropy alloys (HEAs). The combination of superior properties of SMAs and HEAs (high strength, heat resistance, low diffusion coefficient...) would bring useful practical applications in practice. In this paper, we will present an overview of the research situation of SMAs and our initial results obtained on Ni-Ti based alloys of Ni-Ti, Ni-Ti-Zr-Cu-Cr, Ni-Ti-Zr-Cu-Co, Ni-Ti-Zr-Cu-Nb, and Ni-Ti-Zr-Cu-Hf prepared by melt-spinning method.","PeriodicalId":10571,"journal":{"name":"Communications in Physics","volume":"75 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-09-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77020506","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Fabrication of Silver Nanodendrites on Copper for Detecting Rhodamine 6G in Chili Powder Using Surface-enhanced Raman Spectroscopy 用表面增强拉曼光谱在铜表面制备银纳米枝晶检测辣椒粉中的罗丹明6G
Communications in Physics Pub Date : 2021-09-27 DOI: 10.15625/0868-3166/15899
Q. Luong, Tran Cao Dao, T. T. Vu, Manh Cuong Nguyen, Nhu Duong Nguyen
{"title":"Fabrication of Silver Nanodendrites on Copper for Detecting Rhodamine 6G in Chili Powder Using Surface-enhanced Raman Spectroscopy","authors":"Q. Luong, Tran Cao Dao, T. T. Vu, Manh Cuong Nguyen, Nhu Duong Nguyen","doi":"10.15625/0868-3166/15899","DOIUrl":"https://doi.org/10.15625/0868-3166/15899","url":null,"abstract":"Surface-enhanced Raman spectroscopy (SERS) is increasingly being used as a method for detecting traces of contaminants in a variety of specimens. In order to maximize SERS’s performance, the most important thing is to have highly active SERS substrates. In this report, we present a simple method for synthesizing silver nanodendrites (AgNDs) on the surface of a copper (Cu) plate using chemical deposition method. The results showed that, after fabrication, a large number of fern-like AgNDs formed on the Cu surface. These AgNDs are distributed evenly across the entire Cu surface with a relatively thick density. The prepared AgNDs were applied as SERS substrates for detecting Rhodamine 6G (R6G) in chili powders. The results showed that, using the prepared AgNDs substrates, as low as 10−10 M R6G in chili powders can be detected. This demonstrates the applicability of fabricated AgNDs as a highly active SERS substrate.","PeriodicalId":10571,"journal":{"name":"Communications in Physics","volume":"8 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-09-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86203407","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Ambiguities from Nuclear Interactions in the (^{12})C(p,2p)(^{11})B Reaction (^{12}) C(p,2p) (^{11}) B反应中核相互作用的模糊性
Communications in Physics Pub Date : 2021-08-29 DOI: 10.15625/0868-3166/16496
Nguyen Tri Toan Phuc, K. Ogata, Nguyễn Hoàng Phúc, B. Linh, V. H. Hải, L. X. Chung
{"title":"Ambiguities from Nuclear Interactions in the (^{12})C(p,2p)(^{11})B Reaction","authors":"Nguyen Tri Toan Phuc, K. Ogata, Nguyễn Hoàng Phúc, B. Linh, V. H. Hải, L. X. Chung","doi":"10.15625/0868-3166/16496","DOIUrl":"https://doi.org/10.15625/0868-3166/16496","url":null,"abstract":"We investigate the impact of ambiguities coming from the choice of optical potentials and nucleon-nucleon scattering cross sections on the spectroscopic factors extracted from the (^{12})C((p,2p)^{11})B reaction. These ambiguities are evaluated by analyzing the cross sections of the (^{12})C((p,2p)^{11})B reaction at 100 and 200 MeV within the framework of the distorted-wave impulse approximation with realistic choices of nuclear inputs. The results show that the studied ambiguities are considerably large in this energy region and careful choices of nuclear inputs used in the reaction calculations are required to extract reliable structure information.","PeriodicalId":10571,"journal":{"name":"Communications in Physics","volume":"24 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-08-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83886929","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
ELASTIC AND INELASTIC ALPHA TRANSFER IN THE 16O+12C SCATTERING 16o + 12c散射中的弹性和非弹性α传递
Communications in Physics Pub Date : 2021-07-09 DOI: 10.15625/0868-3166/2021/16002
Nguyen Tri Toan Phuc, Nguyễn Hoàng Phúc, D. T. Khoa
{"title":"ELASTIC AND INELASTIC ALPHA TRANSFER IN THE 16O+12C SCATTERING","authors":"Nguyen Tri Toan Phuc, Nguyễn Hoàng Phúc, D. T. Khoa","doi":"10.15625/0868-3166/2021/16002","DOIUrl":"https://doi.org/10.15625/0868-3166/2021/16002","url":null,"abstract":"The elastic scattering cross section measured at energies $Elesssim 10$ MeV/nucleon for some light heavy-ion systems having two identical cores like oc exhibits an enhanced oscillatory pattern at the backward angles. Such a pattern is known to be due to the transfer of the valence nucleon or cluster between the two identical cores. In particular, the elastic $alpha$ transfer has been shown to originate directly from the core-exchange symmetry in the elastic oc scattering. Given the strong transition strength of the $2^+_1$ state of $^{12}$C and its large overlap with the $^{16}$O ground state, it is natural to expect a similar $alpha$ transfer process (or inelastic $alpha$ transfer) to take place in the inelastic oc scattering. The present work provides a realistic coupled channel description of the $alpha$ transfer in the inelastic oc scattering at low energies. Based on the results of the 4 coupled reaction-channels calculation, we show a significant contribution of the $alpha$ transfer to the inelastic oc scattering cross section at the backward angles. These results suggest that the explicit coupling to the $alpha$ transfer channels is crucial in the studies of the elastic and inelastic scattering of a nucleus-nucleus system with the core-exchange symmetry.Keywords{optical potential, coupled reaction channels, inelastic $alpha$ transfer","PeriodicalId":10571,"journal":{"name":"Communications in Physics","volume":"76 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-07-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83871109","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Creation of Hollow-Gaussian Beam for Optical Trap by Dual-beam Nonliear Fabry-perot Interferometer 双光束非线性法布里-珀罗干涉仪制造光阱中空高斯光束
Communications in Physics Pub Date : 2021-07-04 DOI: 10.15625/0868-3166/2021/16029
N. M. Thang, Manh Thang Nguyen, Q. Ho
{"title":"Creation of Hollow-Gaussian Beam for Optical Trap by Dual-beam Nonliear Fabry-perot Interferometer","authors":"N. M. Thang, Manh Thang Nguyen, Q. Ho","doi":"10.15625/0868-3166/2021/16029","DOIUrl":"https://doi.org/10.15625/0868-3166/2021/16029","url":null,"abstract":"In this paper, a model of dual-beam nonlinear Fabry-Perot interferometer (DBNFPI) for creation laser hollow-Gaussian beam (HGB) is investigated. It includes a thin film of organic dye sandwiched between two optical mirrors, and irradiated by two signal and pump laser Gaussian beams. Based on the equation describing the output-input relation of intensities concerning pump intensity and the expression of the spatial intensity distribution of output signal beam (OSB), the range of pump intensity and collection of designed parameters are numerically calculated and discussed for HGB creation. These results give us the opportunity to use DBNFPI for optical trap of low-index dielectric particles.","PeriodicalId":10571,"journal":{"name":"Communications in Physics","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-07-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75218616","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Structure and Optical Property of Gold Nanoparticles Synthesized by Modified Polyol Method 改性多元醇法制备金纳米颗粒的结构与光学性质
Communications in Physics Pub Date : 2021-07-04 DOI: 10.15625/0868-3166/2021/15933
L. Việt
{"title":"Structure and Optical Property of Gold Nanoparticles Synthesized by Modified Polyol Method","authors":"L. Việt","doi":"10.15625/0868-3166/2021/15933","DOIUrl":"https://doi.org/10.15625/0868-3166/2021/15933","url":null,"abstract":"In this research, Au nanoparticles were successfully synthesized by modified polyol method with commercial precursors to be gold (III) chloride trihydrate (HAuCl4·3H2O), ethylene glycol (EG), poly(vinylpyrrolidone) (PVP), sodium borohydride (NaBH4). The structure and properties of as-prepared Au nanoparticles have been investigated by X ray diffraction (XRD), transmission electron microscopy (TEM), and UV-vis-NIR spectroscopy. As a result, Au nanoparticles with the average particle size of 28.80 nm were successfully synthesized in the range of about 50 nm. It is evidenced that the assembly of gold nanoparticles was presented in their nucleation, growth, and formation. ","PeriodicalId":10571,"journal":{"name":"Communications in Physics","volume":"14 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-07-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79033035","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Optical Properties of Silver Nanowires Conjugated with Protein 蛋白质偶联银纳米线的光学性质
Communications in Physics Pub Date : 2021-05-14 DOI: 10.15625/0868-3166/15823
D. Nga, V. V. Huy, C. V. Ha
{"title":"Optical Properties of Silver Nanowires Conjugated with Protein","authors":"D. Nga, V. V. Huy, C. V. Ha","doi":"10.15625/0868-3166/15823","DOIUrl":"https://doi.org/10.15625/0868-3166/15823","url":null,"abstract":"Optical properties of protein-conjugated metallic nanowires are theoretically investigated based on the Mie theory and the core-shell model. Our numerical calculations show that optical spectra of protein-conjugated nanowires can have more a maximum compared to these nanowires without biomolecules. This finding is in a good agreement with previous experiments. We provide better interpretation for the origin of optical peaks in absorption spectrum of nanowires. Our results can be used for designing biosensors and bio-detectors.","PeriodicalId":10571,"journal":{"name":"Communications in Physics","volume":"36 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-05-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81075160","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Normed Division Algebras Application to the Monopole Physics 范分代数在单极子物理中的应用
Communications in Physics Pub Date : 2021-04-16 DOI: 10.15625/0868-3166/15905
D. Le, Van-Hoang Le
{"title":"Normed Division Algebras Application to the Monopole Physics","authors":"D. Le, Van-Hoang Le","doi":"10.15625/0868-3166/15905","DOIUrl":"https://doi.org/10.15625/0868-3166/15905","url":null,"abstract":"We review some normed division algebras R,C,H,O applications to the monopole physics and MICZ-Kepler problems. More specifically, we will briefly review some results in applying the normed division algebras to interpret the existence of Dirac, Yang, and SO(8) monopoles. These monopoles also appear during the examination of the duality between isotropic harmonic oscillators and the MICZ-Kepler problems. We also revisit some of our newest results in the ninedimensional MICZ-Kepler problem using the generalized Hurwitz transformation.","PeriodicalId":10571,"journal":{"name":"Communications in Physics","volume":"93 5 1","pages":"235"},"PeriodicalIF":0.0,"publicationDate":"2021-04-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88384889","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Aggregation of Zoospores on Sharklet Microtopographic Surfaces 游动孢子在鲨鱼微地形表面的聚集
Communications in Physics Pub Date : 2021-04-16 DOI: 10.15625/0868-3166/15668
Nhung Nguyen, T. X. Hoang
{"title":"Aggregation of Zoospores on Sharklet Microtopographic Surfaces","authors":"Nhung Nguyen, T. X. Hoang","doi":"10.15625/0868-3166/15668","DOIUrl":"https://doi.org/10.15625/0868-3166/15668","url":null,"abstract":"Surfaces with engineered microtopographies are potential candidate against biofouling to replace the use of biocides in the marine environment. Understanding the antifouling mechanism of microtopographic surfaces against marine microorganisms, however, has been limited. In this work, we theoretically studied the aggregation of Ulva linza zoospores on the Sharklet topographic surfaces by employing the extended Surface Energetic Attachment (SEA) model proposedin a previous work. The energy parameters of the model were obtained by matching theoretical results with experimental data for one type of Sharklet surface. Monte Carlo simulations were then carried out for a series of Sharklet surfaces with various numbers of distinct features. Inagreement with prior experimental results, our simulations indicate that engineered topographies promote smaller aggregates than those on a smooth surface. Furthermore, we show that the maximum effect of the Sharklet topography on the aggregate size of U. linza can be obtained with just 3 distinct features.","PeriodicalId":10571,"journal":{"name":"Communications in Physics","volume":"5 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-04-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81976161","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
One-step hydrothermal synthesis and photocatalytic activity of SnO2/rGO nanocomposites: effects of pH values 一步水热合成SnO2/rGO纳米复合材料及其光催化活性:pH值的影响
Communications in Physics Pub Date : 2021-04-16 DOI: 10.15625/0868-3166/15916
T. V. Pham
{"title":"One-step hydrothermal synthesis and photocatalytic activity of SnO2/rGO nanocomposites: effects of pH values","authors":"T. V. Pham","doi":"10.15625/0868-3166/15916","DOIUrl":"https://doi.org/10.15625/0868-3166/15916","url":null,"abstract":"In this study, tin oxide /reduced graphene oxide (SnO2/rGO) samples were prepared by hydrothermal method. The structural characteristics, phase composition, morphology, and size of the samples were studied by X-ray diffraction, Raman scattering spectroscopy, and scanning electron microscopy. Results showed that SnO2 nanoparticles had tetragonal rutile crystal structure with a size ranging from 4.65 nm to 5.77 nm when the pH was increased from 5 to 9. The SnO2 nanoparticle morphology together with rGO layers was observed in the FESEM image of these samples. The absorption spectra of SnO2/rGO samples show the characteristic absorption peak of SnO2 at 296 nm, in which the band gap value of the material decreased from 4.91 eV to 4.81 eV when pH was increased from 5 to 9. The simultaneous formation of the two phases of SnO2 and rGO was demonstrated by Raman scattering spectroscopy. Photocatalytic degradation of methylene blue reached 86% after 90 min under visible light.","PeriodicalId":10571,"journal":{"name":"Communications in Physics","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-04-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76116803","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 3
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