Polymer composite from biowaste material have gained enough interest by its unique light weight, high strength, high corrosion resistance, affordability, pollution free, renewability and ecofriendly natures. These important factors are relevant to form an energy efficient domain which will boost the fuel economy in many engineering and industrial sectors. In present study, composite material has developed from waste chicken eggshells (CES). Existing hydrophilic semipermeable membrane in eggshell create trouble during the development of composite with hydrophobic matrix. So (CES)/matrix interface was modified by treating CES with sodium hydroxide chemical which better known as “Mercerization”. Structural, morphological, vibrational and mechanical properties were investigated both for untreated and treated CES particle as well as composites. Structural result showed an increase in crystallite size of ESP which indicated the additional crystal growth in crystalline region. A smooth surface with porous membrane were spotted from morphological study. Combinely, porous membrane and crystallite size increment facilitated the interfacial bonding between ESP/matrix which may cause the improvement in mechanical properties of composites.Polymer composite from biowaste material have gained enough interest by its unique light weight, high strength, high corrosion resistance, affordability, pollution free, renewability and ecofriendly natures. These important factors are relevant to form an energy efficient domain which will boost the fuel economy in many engineering and industrial sectors. In present study, composite material has developed from waste chicken eggshells (CES). Existing hydrophilic semipermeable membrane in eggshell create trouble during the development of composite with hydrophobic matrix. So (CES)/matrix interface was modified by treating CES with sodium hydroxide chemical which better known as “Mercerization”. Structural, morphological, vibrational and mechanical properties were investigated both for untreated and treated CES particle as well as composites. Structural result showed an increase in crystallite size of ESP which indicated the additional crystal growth in crystalline region. A smooth surface with porous membra...
{"title":"Mercerization effect on bio-waste eggshell reinforced polymer composite for energy saving application","authors":"C. Dash, A. Das, S. Behera, D. Bisoyi","doi":"10.1063/1.5122394","DOIUrl":"https://doi.org/10.1063/1.5122394","url":null,"abstract":"Polymer composite from biowaste material have gained enough interest by its unique light weight, high strength, high corrosion resistance, affordability, pollution free, renewability and ecofriendly natures. These important factors are relevant to form an energy efficient domain which will boost the fuel economy in many engineering and industrial sectors. In present study, composite material has developed from waste chicken eggshells (CES). Existing hydrophilic semipermeable membrane in eggshell create trouble during the development of composite with hydrophobic matrix. So (CES)/matrix interface was modified by treating CES with sodium hydroxide chemical which better known as “Mercerization”. Structural, morphological, vibrational and mechanical properties were investigated both for untreated and treated CES particle as well as composites. Structural result showed an increase in crystallite size of ESP which indicated the additional crystal growth in crystalline region. A smooth surface with porous membrane were spotted from morphological study. Combinely, porous membrane and crystallite size increment facilitated the interfacial bonding between ESP/matrix which may cause the improvement in mechanical properties of composites.Polymer composite from biowaste material have gained enough interest by its unique light weight, high strength, high corrosion resistance, affordability, pollution free, renewability and ecofriendly natures. These important factors are relevant to form an energy efficient domain which will boost the fuel economy in many engineering and industrial sectors. In present study, composite material has developed from waste chicken eggshells (CES). Existing hydrophilic semipermeable membrane in eggshell create trouble during the development of composite with hydrophobic matrix. So (CES)/matrix interface was modified by treating CES with sodium hydroxide chemical which better known as “Mercerization”. Structural, morphological, vibrational and mechanical properties were investigated both for untreated and treated CES particle as well as composites. Structural result showed an increase in crystallite size of ESP which indicated the additional crystal growth in crystalline region. A smooth surface with porous membra...","PeriodicalId":7262,"journal":{"name":"ADVANCES IN BASIC SCIENCE (ICABS 2019)","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-08-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89482046","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}
DSSCs based on three different counter electrodes (CEs) viz. platinum (Pt), multiwalled carbon nanotubes (MWCNTs), and mixed Pt/MWCNTs were prepared and their photovoltaic performance is compared. The pastes of MWCNTs and Pt/MWCNTs CEs were coated on indium tin oxide (ITO) glass substrates with doctor blade method whereas the Pt CE is prepared by drop casting method. The structural and catalytic properties of the CEs under reference were investigated by X-ray diffraction (XRD) and Cyclic voltammetry (CV), respectively. Three DSSCs with these three different CEs having ZnO as a photoanode material were assembled in a sandwiched arrangement and the photovoltaic performance of these cells were measured with the help of solar simulator under standard conditions (1.5 Sun, 100 mW cm−2). The DSSC based on mixed Pt/MWCNTs CE exhibited the highest performance (η =3.78%) as compared to the cells based on Pt (η =2.69 %) and MWCNTs (η =2.26 %) CEs which are higher than the DSSCs made with conventional Pt CE.DSSCs based on three different counter electrodes (CEs) viz. platinum (Pt), multiwalled carbon nanotubes (MWCNTs), and mixed Pt/MWCNTs were prepared and their photovoltaic performance is compared. The pastes of MWCNTs and Pt/MWCNTs CEs were coated on indium tin oxide (ITO) glass substrates with doctor blade method whereas the Pt CE is prepared by drop casting method. The structural and catalytic properties of the CEs under reference were investigated by X-ray diffraction (XRD) and Cyclic voltammetry (CV), respectively. Three DSSCs with these three different CEs having ZnO as a photoanode material were assembled in a sandwiched arrangement and the photovoltaic performance of these cells were measured with the help of solar simulator under standard conditions (1.5 Sun, 100 mW cm−2). The DSSC based on mixed Pt/MWCNTs CE exhibited the highest performance (η =3.78%) as compared to the cells based on Pt (η =2.69 %) and MWCNTs (η =2.26 %) CEs which are higher than the DSSCs made with conventional Pt CE.
{"title":"Fabrication and characterization of MWCNTs and Pt/MWCNTs counter electrodes for dye sensitized solar cells","authors":"Bulkesh Siwach, D. Mohan, Monika Barala","doi":"10.1063/1.5122369","DOIUrl":"https://doi.org/10.1063/1.5122369","url":null,"abstract":"DSSCs based on three different counter electrodes (CEs) viz. platinum (Pt), multiwalled carbon nanotubes (MWCNTs), and mixed Pt/MWCNTs were prepared and their photovoltaic performance is compared. The pastes of MWCNTs and Pt/MWCNTs CEs were coated on indium tin oxide (ITO) glass substrates with doctor blade method whereas the Pt CE is prepared by drop casting method. The structural and catalytic properties of the CEs under reference were investigated by X-ray diffraction (XRD) and Cyclic voltammetry (CV), respectively. Three DSSCs with these three different CEs having ZnO as a photoanode material were assembled in a sandwiched arrangement and the photovoltaic performance of these cells were measured with the help of solar simulator under standard conditions (1.5 Sun, 100 mW cm−2). The DSSC based on mixed Pt/MWCNTs CE exhibited the highest performance (η =3.78%) as compared to the cells based on Pt (η =2.69 %) and MWCNTs (η =2.26 %) CEs which are higher than the DSSCs made with conventional Pt CE.DSSCs based on three different counter electrodes (CEs) viz. platinum (Pt), multiwalled carbon nanotubes (MWCNTs), and mixed Pt/MWCNTs were prepared and their photovoltaic performance is compared. The pastes of MWCNTs and Pt/MWCNTs CEs were coated on indium tin oxide (ITO) glass substrates with doctor blade method whereas the Pt CE is prepared by drop casting method. The structural and catalytic properties of the CEs under reference were investigated by X-ray diffraction (XRD) and Cyclic voltammetry (CV), respectively. Three DSSCs with these three different CEs having ZnO as a photoanode material were assembled in a sandwiched arrangement and the photovoltaic performance of these cells were measured with the help of solar simulator under standard conditions (1.5 Sun, 100 mW cm−2). The DSSC based on mixed Pt/MWCNTs CE exhibited the highest performance (η =3.78%) as compared to the cells based on Pt (η =2.69 %) and MWCNTs (η =2.26 %) CEs which are higher than the DSSCs made with conventional Pt CE.","PeriodicalId":7262,"journal":{"name":"ADVANCES IN BASIC SCIENCE (ICABS 2019)","volume":"49 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-08-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78287033","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}
The Theoretical calculations were performed by using Cowan’s computer code. The ground configuration 4d105S2 and ground most level 1S0 of cesium seven (Cs viii) time ionized atom. Incorporating other interacting even parity configurations even parity configurations 5 snd (n=6,7), 5sns (n=7,8), 5p2, 5sng (n=6,7) 5p4f, 5d2, 6p2, 5p6p, 6s2, 5d6s, and odd parity configurations, 5snp (n=6,7), 4d95s25p, 4d95s24f, 5snf (n=4,5), 5p5d, 5s6p, 5p6s, 5p5g, 5d4f, 6p6s, 6p6s, 6p6d and 4f6s. The initial energy parameter scaling applied for Eav and ζ at 100% of the HFR values and Fk, Gk and Rk at 85% of the HFR values. All The reported energy levels were taken from NIST ASD levels list. The levels were used to run the least square fitted (LSF). This allowed adjusting the energy to the real values and hence a better prediction was achieved.The Theoretical calculations were performed by using Cowan’s computer code. The ground configuration 4d105S2 and ground most level 1S0 of cesium seven (Cs viii) time ionized atom. Incorporating other interacting even parity configurations even parity configurations 5 snd (n=6,7), 5sns (n=7,8), 5p2, 5sng (n=6,7) 5p4f, 5d2, 6p2, 5p6p, 6s2, 5d6s, and odd parity configurations, 5snp (n=6,7), 4d95s25p, 4d95s24f, 5snf (n=4,5), 5p5d, 5s6p, 5p6s, 5p5g, 5d4f, 6p6s, 6p6s, 6p6d and 4f6s. The initial energy parameter scaling applied for Eav and ζ at 100% of the HFR values and Fk, Gk and Rk at 85% of the HFR values. All The reported energy levels were taken from NIST ASD levels list. The levels were used to run the least square fitted (LSF). This allowed adjusting the energy to the real values and hence a better prediction was achieved.
{"title":"Systematic calculation of seven times ionized cesium","authors":"A. Husain, S. Jabeen","doi":"10.1063/1.5122468","DOIUrl":"https://doi.org/10.1063/1.5122468","url":null,"abstract":"The Theoretical calculations were performed by using Cowan’s computer code. The ground configuration 4d105S2 and ground most level 1S0 of cesium seven (Cs viii) time ionized atom. Incorporating other interacting even parity configurations even parity configurations 5 snd (n=6,7), 5sns (n=7,8), 5p2, 5sng (n=6,7) 5p4f, 5d2, 6p2, 5p6p, 6s2, 5d6s, and odd parity configurations, 5snp (n=6,7), 4d95s25p, 4d95s24f, 5snf (n=4,5), 5p5d, 5s6p, 5p6s, 5p5g, 5d4f, 6p6s, 6p6s, 6p6d and 4f6s. The initial energy parameter scaling applied for Eav and ζ at 100% of the HFR values and Fk, Gk and Rk at 85% of the HFR values. All The reported energy levels were taken from NIST ASD levels list. The levels were used to run the least square fitted (LSF). This allowed adjusting the energy to the real values and hence a better prediction was achieved.The Theoretical calculations were performed by using Cowan’s computer code. The ground configuration 4d105S2 and ground most level 1S0 of cesium seven (Cs viii) time ionized atom. Incorporating other interacting even parity configurations even parity configurations 5 snd (n=6,7), 5sns (n=7,8), 5p2, 5sng (n=6,7) 5p4f, 5d2, 6p2, 5p6p, 6s2, 5d6s, and odd parity configurations, 5snp (n=6,7), 4d95s25p, 4d95s24f, 5snf (n=4,5), 5p5d, 5s6p, 5p6s, 5p5g, 5d4f, 6p6s, 6p6s, 6p6d and 4f6s. The initial energy parameter scaling applied for Eav and ζ at 100% of the HFR values and Fk, Gk and Rk at 85% of the HFR values. All The reported energy levels were taken from NIST ASD levels list. The levels were used to run the least square fitted (LSF). This allowed adjusting the energy to the real values and hence a better prediction was achieved.","PeriodicalId":7262,"journal":{"name":"ADVANCES IN BASIC SCIENCE (ICABS 2019)","volume":"16 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-08-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87136929","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}
Hydrodynamic model for magnetised semiconductor plasma along with coupled mode approach has been used to study parametric dispersion and threshold characteristics for relativistic mass variation of electrons. Expression for nonlinear second order susceptibility and threshold pump field required to incite parametric interaction in semiconductor plasma has been derived. Effects of various parameters on threshold pump field as well as dispersion coefficient have been plotted for a doped InSb crystal duly irradiated by CO2 laser at 77K. External magnetic field and doping concentrations emerged as control parameters for favourable threshold and dispersion characteristics of the medium.
{"title":"Effect of relativistic mass variation of electron on nonlinear parametric dispersion characteristics in magnetised semiconductor plasmas","authors":"S. Chouhan, S. Dubey, S. Ghosh","doi":"10.1063/1.5122374","DOIUrl":"https://doi.org/10.1063/1.5122374","url":null,"abstract":"Hydrodynamic model for magnetised semiconductor plasma along with coupled mode approach has been used to study parametric dispersion and threshold characteristics for relativistic mass variation of electrons. Expression for nonlinear second order susceptibility and threshold pump field required to incite parametric interaction in semiconductor plasma has been derived. Effects of various parameters on threshold pump field as well as dispersion coefficient have been plotted for a doped InSb crystal duly irradiated by CO2 laser at 77K. External magnetic field and doping concentrations emerged as control parameters for favourable threshold and dispersion characteristics of the medium.","PeriodicalId":7262,"journal":{"name":"ADVANCES IN BASIC SCIENCE (ICABS 2019)","volume":"37 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-08-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84969492","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}
The Er3+/Yb3+ codoped Gd2O3nanocrystal (NC) is synthesized by combustion route using rare earths nitrates as precursors with urea as reducing agent. The prepared samples further calcined at 800 °C for better emission intensities. The FESEM image of calcined NChas used to analyse for the shape and size of particles. The agglomerated particles are investigated. The comparatives study of down conversion and up conversion behaviour of calcined NC are monitored, consequently, the red band dominated over the green band assigned at 656, 548 and 523 nm corresponding to 4F9/2 → 4I15/2, 4S3/2→4I15/2 and 2H11/2→4I15/2 transition, respectively. The Fluorescence intensity ratio is investigated with laser pump power. The color CIE coordinates of the calcinedsample at different wavelength (380 and 976 nm) are calculated which shows almostinvariant and applicable as display device.
{"title":"Photoluminescence study in Gd2O3: Er3+/Yb3+ nanocrystal as a promising sensing probe","authors":"S. K. Maurya, K. Krishna, M. Upadhaya, K. Kumar","doi":"10.1063/1.5122625","DOIUrl":"https://doi.org/10.1063/1.5122625","url":null,"abstract":"The Er3+/Yb3+ codoped Gd2O3nanocrystal (NC) is synthesized by combustion route using rare earths nitrates as precursors with urea as reducing agent. The prepared samples further calcined at 800 °C for better emission intensities. The FESEM image of calcined NChas used to analyse for the shape and size of particles. The agglomerated particles are investigated. The comparatives study of down conversion and up conversion behaviour of calcined NC are monitored, consequently, the red band dominated over the green band assigned at 656, 548 and 523 nm corresponding to 4F9/2 → 4I15/2, 4S3/2→4I15/2 and 2H11/2→4I15/2 transition, respectively. The Fluorescence intensity ratio is investigated with laser pump power. The color CIE coordinates of the calcinedsample at different wavelength (380 and 976 nm) are calculated which shows almostinvariant and applicable as display device.","PeriodicalId":7262,"journal":{"name":"ADVANCES IN BASIC SCIENCE (ICABS 2019)","volume":"9 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-08-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89579466","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}
Low-cost porous mullite ceramic was prepared by using bauxite and fly ash as raw material. The porous mullite ceramic was fabricated maintaining 80% bauxite and 20% fly ash composition. Compacted samples were heat treated at four different temperature 1300°C, 1400°C, 1450°C and 1500°C to study the formation of mullite phase. XRD analysis confirmedthe formation of mullite as a major phase at 1400°C and above. It was found that with an increase in the firing temperature up to 1450°C porosity increases, linear shrinkage decreases and density decreases. After 1450°C normal trend was noticed. FESEM microstructure showed the presence ofdistributed pores, lathe-shaped mullite grains, and the glassy phase. The flexural strength was also investigated to find out the mechanical stability of the porous mullite ceramics.Low-cost porous mullite ceramic was prepared by using bauxite and fly ash as raw material. The porous mullite ceramic was fabricated maintaining 80% bauxite and 20% fly ash composition. Compacted samples were heat treated at four different temperature 1300°C, 1400°C, 1450°C and 1500°C to study the formation of mullite phase. XRD analysis confirmedthe formation of mullite as a major phase at 1400°C and above. It was found that with an increase in the firing temperature up to 1450°C porosity increases, linear shrinkage decreases and density decreases. After 1450°C normal trend was noticed. FESEM microstructure showed the presence ofdistributed pores, lathe-shaped mullite grains, and the glassy phase. The flexural strength was also investigated to find out the mechanical stability of the porous mullite ceramics.
{"title":"Preparation of low-cost porous mullite ceramics by recycling fly ash","authors":"A. Yadav, S. Patel, S. Bhattacharyya","doi":"10.1063/1.5122332","DOIUrl":"https://doi.org/10.1063/1.5122332","url":null,"abstract":"Low-cost porous mullite ceramic was prepared by using bauxite and fly ash as raw material. The porous mullite ceramic was fabricated maintaining 80% bauxite and 20% fly ash composition. Compacted samples were heat treated at four different temperature 1300°C, 1400°C, 1450°C and 1500°C to study the formation of mullite phase. XRD analysis confirmedthe formation of mullite as a major phase at 1400°C and above. It was found that with an increase in the firing temperature up to 1450°C porosity increases, linear shrinkage decreases and density decreases. After 1450°C normal trend was noticed. FESEM microstructure showed the presence ofdistributed pores, lathe-shaped mullite grains, and the glassy phase. The flexural strength was also investigated to find out the mechanical stability of the porous mullite ceramics.Low-cost porous mullite ceramic was prepared by using bauxite and fly ash as raw material. The porous mullite ceramic was fabricated maintaining 80% bauxite and 20% fly ash composition. Compacted samples were heat treated at four different temperature 1300°C, 1400°C, 1450°C and 1500°C to study the formation of mullite phase. XRD analysis confirmedthe formation of mullite as a major phase at 1400°C and above. It was found that with an increase in the firing temperature up to 1450°C porosity increases, linear shrinkage decreases and density decreases. After 1450°C normal trend was noticed. FESEM microstructure showed the presence ofdistributed pores, lathe-shaped mullite grains, and the glassy phase. The flexural strength was also investigated to find out the mechanical stability of the porous mullite ceramics.","PeriodicalId":7262,"journal":{"name":"ADVANCES IN BASIC SCIENCE (ICABS 2019)","volume":"48 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-08-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88420443","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}
CdS being a member of II-VI group, having a wide optical band gap of 2.42 eV makes it suitable for use in the area of photovoltaic and laser devices. It is normally an n-type semiconductor and by d...
{"title":"Effect of iron ion implantation dose on optical and structural properties of CdS nanowires","authors":"J. Kaur, Ravinder Singh","doi":"10.1063/1.5122358","DOIUrl":"https://doi.org/10.1063/1.5122358","url":null,"abstract":"CdS being a member of II-VI group, having a wide optical band gap of 2.42 eV makes it suitable for use in the area of photovoltaic and laser devices. It is normally an n-type semiconductor and by d...","PeriodicalId":7262,"journal":{"name":"ADVANCES IN BASIC SCIENCE (ICABS 2019)","volume":"128 ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-08-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91461903","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}
A new chiral derivatizing reagent, (S)-naproxen (Npx) benzotriazole ester, has been synthesized and it was characterized by UV, IR, 1HNMR, elemental analysis and polarimetric studies. It was used a...
{"title":"Synthesis of (S)-naproxen based amide bond forming chiral reagent and application for liquid chromatographic resolution of (RS)-salbutamol","authors":"Poonam Malik, R. Bhushan","doi":"10.1063/1.5122389","DOIUrl":"https://doi.org/10.1063/1.5122389","url":null,"abstract":"A new chiral derivatizing reagent, (S)-naproxen (Npx) benzotriazole ester, has been synthesized and it was characterized by UV, IR, 1HNMR, elemental analysis and polarimetric studies. It was used a...","PeriodicalId":7262,"journal":{"name":"ADVANCES IN BASIC SCIENCE (ICABS 2019)","volume":"45 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-08-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75736578","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}
Li ion beam irradiation persuaded modifications in the thermodynamic properties of liquid crystalline material 4-n (hexyloxy) benzoic acid (HOBA) have been investigated. The irradiation has been carried out by a pelletron beam using 3 nA current at fluences (1010, 1011, 1012, 1013 ions∕cm2) at room temperature in the crystalline phase of the material. The pure and irradiated liquid crystalline material has a phase sequence of I-N-Cr. The pure and irradiated materials were explored using differential scanning calorimeter (DSC). Thermodynamic studies of the pure and irradiated materials reveal that all the transition temperature is depressed as compared to those of pure materials by the Li ion beam irradiation. The average transition enthalpies and entropies of the irradiated materialare increased as compared to those of purematerial.Li ion beam irradiation persuaded modifications in the thermodynamic properties of liquid crystalline material 4-n (hexyloxy) benzoic acid (HOBA) have been investigated. The irradiation has been carried out by a pelletron beam using 3 nA current at fluences (1010, 1011, 1012, 1013 ions∕cm2) at room temperature in the crystalline phase of the material. The pure and irradiated liquid crystalline material has a phase sequence of I-N-Cr. The pure and irradiated materials were explored using differential scanning calorimeter (DSC). Thermodynamic studies of the pure and irradiated materials reveal that all the transition temperature is depressed as compared to those of pure materials by the Li ion beam irradiation. The average transition enthalpies and entropies of the irradiated materialare increased as compared to those of purematerial.
{"title":"Changes in the thermodynamic properties of 4-n(hexyloxy) benzoic acid by Li+3 ion beam irradiation","authors":"Satendra Kumar, R. Verma, R. Dhar, A. Tripathi","doi":"10.1063/1.5122331","DOIUrl":"https://doi.org/10.1063/1.5122331","url":null,"abstract":"Li ion beam irradiation persuaded modifications in the thermodynamic properties of liquid crystalline material 4-n (hexyloxy) benzoic acid (HOBA) have been investigated. The irradiation has been carried out by a pelletron beam using 3 nA current at fluences (1010, 1011, 1012, 1013 ions∕cm2) at room temperature in the crystalline phase of the material. The pure and irradiated liquid crystalline material has a phase sequence of I-N-Cr. The pure and irradiated materials were explored using differential scanning calorimeter (DSC). Thermodynamic studies of the pure and irradiated materials reveal that all the transition temperature is depressed as compared to those of pure materials by the Li ion beam irradiation. The average transition enthalpies and entropies of the irradiated materialare increased as compared to those of purematerial.Li ion beam irradiation persuaded modifications in the thermodynamic properties of liquid crystalline material 4-n (hexyloxy) benzoic acid (HOBA) have been investigated. The irradiation has been carried out by a pelletron beam using 3 nA current at fluences (1010, 1011, 1012, 1013 ions∕cm2) at room temperature in the crystalline phase of the material. The pure and irradiated liquid crystalline material has a phase sequence of I-N-Cr. The pure and irradiated materials were explored using differential scanning calorimeter (DSC). Thermodynamic studies of the pure and irradiated materials reveal that all the transition temperature is depressed as compared to those of pure materials by the Li ion beam irradiation. The average transition enthalpies and entropies of the irradiated materialare increased as compared to those of purematerial.","PeriodicalId":7262,"journal":{"name":"ADVANCES IN BASIC SCIENCE (ICABS 2019)","volume":"100 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-08-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85869646","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}
P. K. Ingalagondi, Omnath Patil, G. Shivaraj, T. Sankarappa, S. M. Hanagodimath
The effect of solvents on absorption and fluorescence spectra of a newly synthesized coumarin laser dye namely; 6-Methoxy-4 (2-Methoxy methyl) –Chromen-2 one (2-MMC) has been studied in different solvents at room temperature (300 K). Ground and excited state dipole moments were estimated using Lippert’s Bakhshiev’s and Kawski- Chamma-Violet’s equations. It is found that the ground state dipole moment is less than that of excited state dipole moment.The effect of solvents on absorption and fluorescence spectra of a newly synthesized coumarin laser dye namely; 6-Methoxy-4 (2-Methoxy methyl) –Chromen-2 one (2-MMC) has been studied in different solvents at room temperature (300 K). Ground and excited state dipole moments were estimated using Lippert’s Bakhshiev’s and Kawski- Chamma-Violet’s equations. It is found that the ground state dipole moment is less than that of excited state dipole moment.
溶剂对新合成香豆素激光染料吸收光谱和荧光光谱的影响研究了6-甲氧基-4(2-甲氧基甲基)- chromen2 - one (2-MMC)在不同溶剂下的室温(300 K)反应。基态和激发态偶极矩用利珀特的巴赫希耶夫方程和考夫斯基-查马-维奥莱特方程估计。发现基态偶极矩小于激发态偶极矩。溶剂对新合成香豆素激光染料吸收光谱和荧光光谱的影响研究了6-甲氧基-4(2-甲氧基甲基)- chromen2 - one (2-MMC)在不同溶剂下的室温(300 K)反应。基态和激发态偶极矩用利珀特的巴赫希耶夫方程和考夫斯基-查马-维奥莱特方程估计。发现基态偶极矩小于激发态偶极矩。
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