Browsing by Author "Wu, CM"
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- ItemThe cold-neutron triple-axis spectrometer SIKA at OPAL(Australian Institute of Physics, 2018-01-31) Deng, G; Yano, SI; Wu, CM; Peng, JC; Gardner, JS; Imamovic, E; Vorderwisch, P; Li, WH; McIntyre, GJSIKA is a high-flux cold-neutron triple-axis spectrometer funded by Ministry of Science and Technology of Taiwan and currently being operated by National Synchrotron Radiation Research Center. It is located on the OPAL reactor face at the Australian Nuclear Science and Technology Organization (ANSTO). Its incident energy ranges from 2.6meV to 30meV with the highest flux at ~8meV. SIKA is equipped with a multiplexing analyzer consisting of an array of 13 PG crystal blades, a multi-wire detector, a single detector and a diffraction detector. The most frequently-used single-detector mode and the multi-Q constant-Ef mode are demonstrated by using the standard samples, namely, MnF2 and Pb single crystals, respectively. The spin-wave excitation of MnF2, the phonon dispersion of thermoelectric material SeSn, the spin dynamics of the spin-glass system (Ni0.40Mn0.60)TiO3, and other experimental data from SIKA are demonstrated as examples of SIKA’s capabilities and performance. The spin-wave excitation was observed in the quasi-one-dimensional spinladder compound SrCa13Cu24O41, indicating the low background of SIKA. These results indicate that SIKA is a highly-flexible cold triple-axis spectrometer with reasonably low background.
- ItemThe cold-neutron triple-axis spectrometer SIKA at OPAL(International Conference on Neutron Scattering, 2017-07-12) Deng, G; Yano, S; Wu, CM; Peng, JC; Imamovic, E; Vorderwisch, P; Li, WH; Gardner, JSSIKA is a high-flux cold-neutron triple-axis spectrometer built on the cold source CG4 of the 20MW Open Pool Australian Light-water (OPAL) reactor at Australian Nuclear Science and Technology Organization (ANSTO) by Taiwan.[1] As a state-of-the-art triple-axis spectrometer, SIKA is equipped with a large double-focusing pyrolytic graphite (PG) monochromator, a multiblade PG analyser and a multi-detector system. The design, functions, and capabilities of SIKA are presented. The spin wave excitation of MnF2, the phonon dispersion of thermoelectric material SeSn,[2] the spin dynamics of spin glass system (Ni0.40Mn0.60)TiO3[3] and other experimental data from SIKA are demonstrated as examples of SIKA’s capabilities and performance.
- ItemEffect of temperature on the conformation and functionality of poly(N-isopropylacrylamide) (PNIPAM)-grafted nanocellulose hydrogels(Elsevier, 2023-12-15) Raghuwanshi, VS; Mendoza, DJ; Browne, C; Ayurini, M; Gervinskas, G; Hooper, JF; Mata, JP; Wu, CM; Simon, GP; Garnier, GHypothesis Poly(N-isopropylacrylamide) [PNIPAM]-grafted cellulose nanofibers (CNFs) are new thermo-responsive hydrogels which can be used for a wide range of applications. Currently, there is no clear understanding of the precise mechanism by which CNFs and PNIPAM interact together. Here, we hypothesize that the physical crosslinking of grafted PNIPAM on CNF inhibits the free movement of individual CNF, which increases the gel strength while sustaining its thermo-responsive properties. Experiments The thermo-responsive behaviour of PNIPAM-grafted CNFs (PNIPAM-g-CNFs), synthesized via silver-catalyzed decarboxylative radical polymerization, and PNIPAM-blended CNFs (PNIPAM-b-CNFs) was studied. Small angle neutron scattering (SANS) combined with Ultra-SANS (USANS) revealed the nano to microscale conformation changes of these polymer hybrids as a function of temperature. The effect of temperature on the optical and viscoelastic properties of hydrogels was also investigated. Findings Grafting PNIPAM from CNFs shifted the lower critical solution temperature (LCST) from 32 °C to 36 °C. Below LCST, the PNIPAM chains in PNIPAM-g-CNF sustain an open conformation and poor interaction with CNF, and exhibit water-like behaviour. At and above LCST, the PNIPAM chains change conformation to entangle and aggregate nearby CNFs. Large voids are formed in solution between the aggregated PNIPAM-CNF walls. In comparison, PNIPAM-b-CNF sustains liquid-like behaviour below LCST. At and above LCST, the blended PNIPAM phase separates from CNF to form large aggregates which do not affect CNF network and thus PNIPAM-b-CNF demonstrates low viscosity. Understanding of temperature-dependent conformation of PNIPAM-g-CNFs engineer thermo-responsive hydrogels for biomedical and functional applications. © 2023 The Author(s). Published by Elsevier Inc. This is an open access article under the CC BY-NC-ND license.
- ItemEffects of oxygen deficiency on the magnetic ordering of Mn in Tb0.9Na0.1MnO2.9(Institute of Physics, 2008-03-12) Yang, CC; Wu, CM; Li, WH; Chan, TS; Liu, RS; Chen, YY; Avdeev, MMonovalent Na+ ions have been incorporated into a multiferroic TbMnO3 compound. Structural studies, using high-resolution neutron diffraction patterns, show that monovalent Na+-doping results in a noticeable oxygen deficiency in the compound. The alternations in crystalline and magnetic structures due to oxygen deficiency are investigated by neutron diffraction and magnetic susceptibility measurements. Na-doping turns the modulated incommensurate Mn spin structure, observed for the parent compound, into a simple commensurate one. The observed magnetic diffraction patterns agree very well with that calculated assuming a D-type arrangement for the Mn spins, with the moments pointing along the c-axis direction. No significant alternation in the ordering temperature of the Mn moments is found. © 2008, Institute of Physics
- ItemIn operando detection of lithium diffusion behaviors at low temperature in 18650 Li-ion battery anode(Elsevier, 2018-12-15) Wu, CM; Chang, CC; Avdeev, M; Pan, PI; Li, WHLithium diffusion process in an 18650 cell was investigated in-operando using neutron diffraction. The graphite anode delithiation rate and the amount of discharge capacity during the discharging process were correlated with the temperature and current rate. At room temperature, the lithium diffusion rate in LiC6 phase at the high rate capability (C/5) is same as at low rate capability (C/20), which means that lithium diffusion in LiC6 crystal phase is independent of the current rate in this range during the discharge process. Lowering temperature to −20 °C decreases both the lithium diffusion and capacity, although the latter can be partially recovered by using lower C-rate. © 2018 Elsevier B.V.
- ItemLarge magnetoresistance and charge transfer between the conduction and magnetic electrons in layered oxyselenide BiOCu0.96Se(Royal Society of Chemistry, 2013-8-27) Karna, SK; Hung, CH; Wu, CM; Wang, CW; Li, WH; Sankar, R; Chou, FC; Avdeev, MThe electrical and magnetic properties of slightly Cu-deficient BiOCu0.96Se have been investigated using neutron and X-ray diffraction, ac magnetic susceptibility, magnetization and electric resistivity measurements. The layered BiOCu0.96Se crystallizes into a tetragonal lattice with a P4/nmm symmetry. Thermal profiles of the electrical resistivity reveal a semiconductor type behavior, but depart from its course at low temperatures when antiferromagnetic coupling becomes thermally loosened at 140 K. Positive magnetoresistances are obtained at all temperatures studied. With an applied magnetic field of 0.5 kOe, the magnetoresistance reaches 235% at 2 K. It decreases with increasing temperature, but stabilizes to 70% above 60 K. Both ferromagnetic and antiferromagnetic coupling are detected between the Cu spins in the SeCu4 pyramidal blocks, which results in a non-collinear spin arrangement at low temperatures. The antiferromagnetic component becomes disordered above TN = 140 K, whereas the ferromagnetic moment persists up to TC = 300 K. Interlayer charge transfer between the conduction and magnetic electrons gives rise to an anomaly in the magnetic order parameter. © 2013, Royal Society of Chemistry.
- ItemLow temperature effect of lithium diffusion in 18650-type MNC battery(Australian Institute of Physics, 2016-02-02) Wu, CM; Avdeev, M; Chang, CC; Pan, PIInvestigations of the phenomena in atomic scale are essential for fully understandings of the activities in battery operation. The battery is known to be operated in a broad temperature range below and above the ambient temperature. Temperature change could affect the performance, and might even raise safety issue. Li-plating, where metallic Li-ions accumulate onto the graphite anode, is a recently realized atomic pheromone that severely degrades the performance of the battery. These including capacity loss, impedance raise, activity slowing down and aging speeding up. It is now known that intercalation into the graphite and platting onto the graphite surface can both occur when Li-ions return to the graphite anode upon charging. Li-plating will partially block the insertion of Li-ions onto the graphite electrode in some extent, which reduces the migration of Li-ions during discharging and charging. Clearly, local environment, such as temperature or electric field, could affect the insertion rate, but experimental study or theoretical modeling concerning these effects are still limited. Here, we report on the results of studies made, using cold neutron triple-axis spectrometer – SIKA’s elastic mode, on the Li+ diffusion rate of an 18650-type Li-ion battery in discharging-charging operations, carried out at and below the ambient temperature. Sizable in-situ neutron diffraction intensities for the {001} reflection of LiC6, for the {002} reflection of LiC12, as well as for the {004} reflection of LiC54 were clearly detected in very 5 minute interval during a discharging-charging operation, which were then used to extract the Li+ diffusion rate during operation. Interestingly, operation with a C/5 discharging rate performed at -20 ℃ causes a dramatically 25% reduction in the Li+ diffusion rate and even more surprisingly the discharge transfers only 35% of the Li out of the graphite anode since the diffusion essentially stop in the early stage (~1/3) of the discharge period. The reduction and stopping of Li+ diffusion can effectively corrected by employing a lower discharging rate in the operation.
- ItemLow-temperature effect on lithium diffusion in 18650 Li-ion battery(International Conference on Neutron Scattering, 2017-07-12) Wu, CM; Chang, CC; Pan, PI; Avdeev, MInvestigations of the phenomena at the atomic scale are essential for full understanding of battery operation. The cells are operated in a broad temperature range below and above the ambient temperature. Temperature change could affect the performance and might even raise the safety issue. Apparently, local environment, such as temperature or electric field, could affect the insertion rate, but experimental studies of these effects are still limited. Here, we report on the results of studies made, using cold neutron triple-axis spectrometer – SIKA’s elastic mode, on the Li+ diffusion rate of an 18650-type Li-ion battery in discharging-charging operations, carried out at and below the ambient temperature. Operation with a C/5 discharging rate performed at -20 ? showed a dramatic 25% reduction in the Li+ diffusion rate and even more surprisingly the discharge transfer of only 35% of Lithium out of the graphite anode since the diffusion essentially stops in the early stage (~1/3) of the discharge period. The reduction and stopping of Li+ diffusion can be effectively alleviated by employing a lower discharging rate in operation.
- ItemThe mechanism of the sodiation and desodiation in super P carbon electrode for sodium-ion battery(Elsevier, 2017-02-01) Wu, CM; Pan, PI; Cheng, YW; Liu, CP; Chang, CC; Avdeev, M; Lin, SKThe sodiation and desodiation of sodium (Na) into the Super-P carbon anode material were investigated using electrochemical analyses, high-resolution transmission electron microscopy (HRTEM), and neutron powder diffraction (NPD). In the sodiated Super-P carbon, sodium is stored both in the graphite interlayer space of carbon nano-particles and pores between the particles. Sodium metal clusters found in micro-pores between the carbon particles are responsible for the large irreversible capacity of the Super-P electrode. The graphite interlayer distance increases on sodiation from 3.57 Å to two distinct values of ∼3.84 and 4.41 Å. The mechanism of the process is discussed. © 2016 Elsevier B.V.
- ItemNanometer-thick ITIC bulk heterojunction films as non-rullerene acceptors in organic solar cells(American Chemical Society, 2024-07-25) Huang, TY; Le Brun, AP; Sochor, B; Wu, CM; Bulut, Y; Müller-Buschbaum, P; Roth, SV; Yang, YLThe nanomorphology of bulk heterojunctions (BHJs) plays a critical role in determining the performance of non-fullerene organic solar cells (OSCs). Thermal annealing is commonly used to reorganize the donor and acceptor phases within the BHJs. In this study, we investigate the vertical morphology of BHJ blend films incorporating the poly[(5,6-difluoro-2,1,3-benzothiadiazol-4,7-diyl)-alt-(3,3‴-di(2-octyldodecyl)-2,2′;5′,2″;5″,2‴-quaterthiophen-5,5‴-diyl)] (PffBT4T-2OD) polymer as the donor and 3,9-bis(2-methylene-(3-(1,1-dicyanomethylene)-indanone))-5,5,11,11-tetrakis(4-hexylphenyl)-dithieno[2,3-d:2′,3′-d′]-s-indaceno[1,2-b:5,6-b′]dithiophene (ITIC) as the acceptor. Neutron reflectivity patterns and scattering length density profiles reveal that the surface of the BHJ films became diffuse when the annealing temperature was above 150 °C. We further find that mitigated agglomeration of PffBT4T-2OD side chains exhibits minimal impact on morphology post-annealing. Instead, ITIC molecules trigger aggregations, accompanied by interface diffusion and increased film roughness. X-ray scattering confirms a 5-fold increase in aggregated ITIC nanodomains after annealing. Our findings highlight that unstable ITIC phases dominate the BHJ morphology of thin films, leading to the thermal instability of OSCs. This study enhances our understanding of the BHJ morphology and offers insights into improving the performance of energy conversion devices. © 2024 American Chemical Society
- ItemNSRRC neutron scattering group at ACNS(Australian Institute of Nuclear Science and Engineering (AINSE), 2018-11-19) Yano, SI; Wang, CW; Peng, H; Wu, CMThe National synchrotron radiation research centre (NSRRC) in Taiwan has a group of scientists stationed at the Australian Centre for Neutron Scattering (ACNS), ANSTO, Australia. Three Instrument Scientists were hired to operate neutron scattering instruments and to serve users; Chun-Min Wu works on Small angle neutron scattering instruments, Chin-wei Wang is a Powder diffractometer scientist and Shinichiro Yano works on the cold triple axis spectrometer SIKA. In addition, one staff member is a software engineer. Under this arrangement, we have built the cold triple axis spectrometer SIKA in the OPAL reactor beam hall at ANSTO. SIKA was designed to study dynamics in magnetic materials in the energy range of meV and below with high resolution. The Taiwan investment adds particular value to the area of materials science whereby Taiwan and Australia both benefit. Following 10 years of construc tion, SIKA has been in the user program since 2015 July with the number of scientific publications growing steadily since then. Taiwanese users now occupy about 20 percent of international proposals submitted to ACNS in the 2018-2 proposal round whilst the Taiwanese neutron scattering community is also growing. We hope for continued good relations between NSRRC and ANSTO with a view to expanding our col laboration. We are currently in the process of hiring an additional instrument scientist who would be working on a reflectometer at ACNS. In this talk, we will present scientific outcomes from the NSRRC neutron group and updates from SIKA. © The Authors.
- ItemPhytantriol-based cubosome formulation as an antimicrobial against Lipopolysaccharide-deficient gram-gegative bacteria(American Chemical Society, 2020-09-17) Lai, XF; Ding, Y; Wu, CM; Chen, X; Jiang, JH; Hsu, HY; Wang, Y; Le Brun, AP; Song, JN; Han, ML; Li, J; Shen, HHTreatment of multidrug-resistant (MDR) bacterial infections increasingly relies on last-line antibiotics, such as polymyxins, with the urgent need for discovery of new antimicrobials. Nanotechnology-based antimicrobials have gained significant importance to prevent the catastrophic emergence of MDR over the past decade. In this study, phytantriol-based nanoparticles, named cubosomes, were prepared and examined in vitro by minimum inhibitory concentration (MIC) and time-kill assays against Gram-negative bacteria: Acinetobacter baumannii, Klebsiella pneumoniae, and Pseudomonas aeruginosa. Phytantriol-based cubosomes were highly bactericidal against polymyxin-resistant, lipopolysaccharide (LPS)-deficient A. baumannii strains. Small-angle neutron scattering (SANS) was employed to understand the structural changes in biomimetic membranes that replicate the composition of these LPS-deficient strains upon treatment with cubosomes. Additionally, to further understand the membrane-cubosome interface, neutron reflectivity (NR) was used to investigate the interaction of cubosomes with model bacterial membranes on a solid support. These results reveal that cubosomes might be a new strategy for combating LPS-deficient Gram-negative pathogens. © 2020 American Chemical Society.
- ItemA polytherapy based approach to combat antimicrobial resistance using cubosomes(Springer Nature, 2022-01-17) Lai, XF; Han, ML; Ding, Y; Chow, SH; Le Brun, AP; Wu, CM; Bergen, PJ; Jiang, JH; Hsu, HY; Muir, BW; White, J; Song, JN; Li, J; Shen, HHA depleted antimicrobial drug pipeline combined with an increasing prevalence of Gram-negative ‘superbugs’ has increased interest in nano therapies to treat antibiotic resistance. As cubosomes and polymyxins disrupt the outer membrane of Gram-negative bacteria via different mechanisms, we herein examine the antimicrobial activity of polymyxin-loaded cubosomes and explore an alternative strategy via the polytherapy treatment of pathogens with cubosomes in combination with polymyxin. The polytherapy treatment substantially increases antimicrobial activity compared to polymyxin B-loaded cubosomes or polymyxin and cubosomes alone. Confocal microscopy and neutron reflectometry suggest the superior polytherapy activity is achieved via a two-step process. Firstly, electrostatic interactions between polymyxin and lipid A initially destabilize the outer membrane. Subsequently, an influx of cubosomes results in further membrane disruption via a lipid exchange process. These findings demonstrate that nanoparticle-based polytherapy treatments may potentially serve as improved alternatives to the conventional use of drug-loaded lipid nanoparticles for the treatment of “superbugs”. © The Authors - Open Access CC-BY 4.0
- ItemA polytherapy based approach to combat antimicrobial resistance using cubosomes(Springer Nature, 2022-01-17) Lai, XF; Han, ML; Ding, Y; Chow, SH; Le Brun, AP; Wu, CM; Bergen, PJ; Jiang, JH; Hsu, HY; Muir, BW; White, J; Song, JN; Shen, HHA depleted antimicrobial drug pipeline combined with an increasing prevalence of Gram-negative ‘superbugs’ has increased interest in nano therapies to treat antibiotic resistance. As cubosomes and polymyxins disrupt the outer membrane of Gram-negative bacteria via different mechanisms, we herein examine the antimicrobial activity of polymyxin-loaded cubosomes and explore an alternative strategy via the polytherapy treatment of pathogens with cubosomes in combination with polymyxin. The polytherapy treatment substantially increases antimicrobial activity compared to polymyxin B-loaded cubosomes or polymyxin and cubosomes alone. Confocal microscopy and neutron reflectometry suggest the superior polytherapy activity is achieved via a two-step process. Firstly, electrostatic interactions between polymyxin and lipid A initially destabilize the outer membrane. Subsequently, an influx of cubosomes results in further membrane disruption via a lipid exchange process. These findings demonstrate that nanoparticle-based polytherapy treatments may potentially serve as improved alternatives to the conventional use of drug-loaded lipid nanoparticles for the treatment of “superbugs”. Open Access: This article is licensed under a Creative Commons Attribution 4.0 International Licence.
- ItemProbing protein structures in solution by molecular dynamics simulation and small-angle x-ray scattering(International Union of Crystallography, 2021-08-14) Yang, HC; Lin, SW; Ge, YC; Huang, MY; Yang, CH; Liu, WM; Duff, AP; Wu, CM; Lan, YK; Su, AC; Yeh, YQ; Jeng, US; Chou, PTLore of chemical biology guides us that drug discovery of protein binding relies on either optimize the active site complexity of lock and key or induced-fit with conformation selection dynamics; yet, the latter that often-coupled protein interior transport dynamics was much harder to study due to its lack of strong interactions in transient states.[1-2] This study starts to make progress in using in-situ operando X-ray and neutron contrast variation techniques to depict the landscape of protein binding substrate dynamics in solution. We herein demonstrate, for the first time, the 3-D dynamical structures of hydrated CYP450 protein exterior surfaces to interior buried heme site by a distributed connection of channels that direct the reactant in and out. Using CYP450s of prostacyclin synthase (PGIS) and thromboxane synthase (TXAS) as prototypes we have unveiled the unique dynamics of P450 functional channels in/out the haem site, which drive a variety of water molecules motion, water density change and pre-organization toward the heme active site and hence harness the substrate binding selectivity. The result is able to clarify how these two proteins catalyze the same substrate of prostaglandin H2 by entirely different regio-chemical-selective pathways. © The Authors
- ItemQUOKKA - 40 metre reactor based monochromatic small angle neutron scattering instrument(International Conference on Neutron Scattering, 2017-07-12) Garvey, CJ; Gilbert, EP; Mata, JP; Wood, K; Wu, CMQuokka since it entered user service in 2009, has serviced the needs of the Australia neutron scattering community, but also has provided some innovative capabilities for those international users. Here we describe the current state of the Quokka instrument, and those developments in the instrument capabilities and its sample environments. The instrument is designed to enable measurements of scattered intensity on an absolute intensity scale over three orders of magnitude of the momentum transfer (3 x 10-4 Å-1 < q< 0.7 Å-1). The instrument is able to perform polarized neutron experiments and a new high count rate detector will be commissioned on the instrument next year. While the instrument has successfully engaged those traditional users of small angle scattering, the instrument has a particularly Australian context for its further development, and a nascent community has been stimulated to widen the user base in terms of scientific area.
- ItemQUOKKA a 40 m small angle neutron scattering (SANS) instrument(Australian Institute of Nuclear Science and Engineering (AINSE), 2018-11-19) Garvey, CJ; Gilbert, EP; Mata, JP; Wood, K; Wu, CMQUOKKA is a versatile small angle neutron scattering (SANS) instrument in operation at the Australian research reactor, OPAL [1]. SANS is a powerful techniques for structural characterisation require a minimum of special preparation. As a conventional 40 m pinhole instrument operating with a neutron velocity selector the instrument1 is capable of providing a statistical and non-destructive perspective on structure over length scales from 10’s to 1000’s of Ångstrom. QUOKKA has a large flexible sample area, capable of accommodating a variety of sample environments including: standard 20 position sample changer for automated measurements on solids, liquids, pastes and powders; Couette geometry rheometer for in situ rheometry/SANS; a stopped flow device; and a differential scanning calorimeter. QUOKKA is available for general use through a biannual proposal system. © The Authors.
- ItemQuokka, the pinhole small angle neutron scattering instrument, at OPAL(Australian Institute of Nuclear Science and Engineering, 2016-11-29) Gilbert, EP; Wood, K; Garvey, CJ; Mata, JP; Wu, CMQuokka is a 40 metre small angle neutron scattering instrument installed on the cold source of the OPAL research reactor operated by ANSTO. The instrument is designed to enable measurements of scattering vectors over three orders of magnitude, from 3 x 10-4 Å-1< q < 0.7 Å-1. The instrument is able to perform polarized neutron experiments and a new high count rate detector will be commissioned on the instrument next year. In addition to the standard 20-position automatic sample changer, a wide range of sample environment equipment is available for use on the beamline, some of which are unique worldwide. A rheometer, rapid heat/quench cell, dynamic light scattering, differential scanning calorimetry and a stop-flow mixing cell are all in use. The capabilities and performance of Quokka will be presented.
- ItemQuokka, the pinhole small-angle neutron scattering instrument(Australian Institute of Nuclear Science and Engineering (AINSE), 2020-11-11) Wood, K; Garvey, CJ; Mata, JP; Wakeham, D; Wu, CM; Gilbert, EPQuokka was the first Small Angle Neutron Scattering instrument to be in operation at the Australian research reactor, OPAL [1]. It is a 40 m pinhole instrument operating with a neutron velocity selector, an adjustable collimation system providing source-sample distances of up to 20 m and a two dimensional 1 metre square position-sensitive detector, capable of measuring neutrons scattered from the sample over a secondary flight path of up to 20 m. Also offering incident beam polarization and analysis capability as well as lens focusing optics, Quokka has been designed as a general purpose SANS instrument with a large sample area, capable of accommodating a variety of sample environments. Calibrated absolute scattering intensity measurements in a standard setup may be made over a range of wavelengths between 4 x 10-3 Å-1 and 0.7 Å-1. Here we describe Quokka’s design characteristics, performance and operation, including a high count rate detector, installed in 2018. Outputs from Quokka have been published in diverse fields such as magnetism, metallurgy, mineralogy, structural biology, polymers, food science and soft matter. We present here a selection of recent scientific highlights. © 2020 The Authors.
- ItemThe recent progress of polarized neutron scattering techniques at SIKA(Australian Nuclear Science and Technology Organisation, 2021-11-26) Yano, SC; Deng, GH; Rule, KC; de Souza, NR; Manning, AG; Peng, H; Wu, CMSIKA, the cold-neutron triple-axis spectrometer is on the CG4 beam port at the OPAL reactor, ACNS, ANSTO. We have reported the capabilities and status of SIKA in the last several user's meetings. In this meeting, we discuss the recent development of polarized neutron scattering experiments on SIKA. A 3He polarization analysis system is available for SIKA. We have performed several user experiments and commissioning experiments in the last two years. We would like to present some results by introducing the techniques we are trying to implement. In addition, we discuss our plan for the polarized neutron scattering experiment on the SIKA. © The Authors