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Chandrasekaran, S.,Kim, E.J.,Chung, J.S.,Yoo, I.K.,Senthilkumar, V.,Kim, Y.S.,Bowen, C.R.,Adamaki, V.,Hyun Hur, S. Elsevier 2017 CHEMICAL ENGINEERING JOURNAL -LAUSANNE- Vol.309 No.-
This is the first demonstration of four distinct types of Lead Magnesium Titanate (PMT) perovskites including spheres, flakes, hierarchical flower and thin microbelt shapes that were finely tuned via facile solution method to develop cost effective and high performance photoanode materials for water splitting. The influence of solvent effects during structural tuning, purity, morphology, optical absorption, structural phase transition and stoichiometric formation of the prepared Lead Magnesium Titanate perovskites has been discussed in detail. A remarkable observation is that the thin microbelts structured PMT perovskite (PMTT) exhibited an excellent water splitting performance and it is more sensitive to the illuminated visible light. Owing to the unique structural features, the photoconversion efficiency value of PMTT perovskite is ~3.9, 3.54, 2.85 and 1.52 times higher than those of other prepared PMT perovskites including pristine PbTiO<SUB>3</SUB>. The excellent water splitting performance of PMTT (thin microbelts) may be ascribed to the remarkable structural features that include a large surface area, high optical absorbance, more active sites and high interface area of the microbelts, which provide large contact areas between the electrolyte and highly active materials for electrolyte diffusion and a rapid route for charge transfer with minimal diffusion resistance. In addition, each thin microbelt is directly in contact with the Ni foam substrate, which can also shorten the diffusion path for the electrons. The demonstrated approach paves the way for low-cost and high-throughput production of next generation, high performance and highly active water splitting perovskite photocatalysts.
Structure of the Double Four-spiral Semigroup
CHANDRASEKARAN, V.M.,LOGANATHAN, M. Department of Mathematics 2003 Kyungpook mathematical journal Vol.43 No.4
In this paper, we first give an alternative description of the fundamental orthodox semigroup $\bar{A}$(1, 2). We then use this to represent the double four-spiral semigroup $DSp_4$ as a regular Rees matrix semigroup over $\bar{A}$(1, 2).
STRUCTURE OF COEXTENSIONS OF REGULAR SEMIGROUPS BY RECTANGULAR BANDS
Chandrasekaran, V.M. 한국전산응용수학회 2003 Journal of applied mathematics & informatics Vol.12 No.1
In this paper, we described the structure of coextensions of regular semigroups by rectangular bands.
Structure of coextensions of regular semigroups by rectangular bands
V. M. Chandrasekaran 한국전산응용수학회 2003 Journal of applied mathematics & informatics Vol.12 No.1-2
In this paper, we described the structure of coextensions ofregular semigroups by rectangular bands.AMS Mathematics Subject Classication: 20M17.Keywords and Phrases: Regular semigroup, Coextension, rectangular band1. IntroductionThis paper is a continuation of the previous paper [1]. The structure of orthodoxsemigroups has been studied in [1] by using the technique in the paper [3] . Inthis paper, we use the same technique to study the structure of coextensionsos regular semigroups by rectangular bands. Since an orthodox semigroup is acoextension of inverse semigroup by rectangular bands this result generalises [1].2. PreliminariesWe use whenever possible the notation of Howie [2]. We also use the following
SPLIT MAP AND IDEMPOTENT SEPARATING CONGRUENCE
CHANDRASEKARAN, V. M.,LOGANATHAN, M. 한국전산응용수학회 2005 Journal of applied mathematics & informatics Vol.18 No.1
Let T be a regular semigroup and let S be a regular subsemigroup of T. In this paper we study the relationship between the idempotent separating congruence on S and the idempotent separating congruence on T, when T and S are connected by a splitmap ${\theta} : T {\to} S$.
Split map And idempotent separating congruence
V. M. Chandrasekaran,M. Loganathan 한국전산응용수학회 2005 Journal of applied mathematics & informatics Vol.18 No.1-2
Let T be a regular semigroup and let S be a regular subsemigroup of T. In this paper we study the relationship between the idempotent separating congruence on S and the idempotent separating congruence on T, when T and S are connected by a splitmap : T ! S.
Sudha Natesan,Chandrasekaran Sowrirajan,Premnath Dhanaraj,Israel V. M. V. Enoch 대한화학회 2014 Bulletin of the Korean Chemical Society Vol.35 No.7
The association of silybin with β-cyclodextrin and its influence on silybin’s binding with bovine serum albumin are reported. The stoichiometry, binding constant, and the structure of silybin–β-cyclodextrin inclusion complex are reported. The titrations of silybin with bovine serum albumin in the absence and presence of β- cyclodextrin are carried out and the differences in binding strengths are discussed. Molecular modeling is used to optimize the sites and mode of binding of silybin with bovine serum albumin. Förster resonance energy transfer is calculated and the proximity of interacting molecules is reported in the presence and absence of β- cyclodextrin.