Fractal Studies on Titanium-Silica Aerogels using SMARTer

Putra, Edy Giri Rachman; Ikram, Abarrul; Bharoto,; Santoso, Eko; Fang, Tao; Ibrahim, Norliza; Mohamed, Abdul Aziz

doi:10.1063/1.2906047

Cited by 3 publications

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“…S12 and S13 †). 59 Especially, the approximation of the low-q data (0.012-0.1 nm À1 ) reveals a mass fractal dimension (the negative slope) between 1.45-1.85 for all aerogel samples (Table S2 †), implying that the gelation of MOPs follows the diffusion-limited cluster aggregation (DLCA). 60 In the high-q region (0.2-2 nm À1 ), a noticeable change of the slope was observed from the neat HRhMOP (q À3.2 ) to the aerogel samples (q À3.78 for Aerogel-0), indicating a smoother surface of MOP-linked particles than the physical MOP aggregates.…”

Section: Structural Rearrangement Of the Linked Mop Network At The Molecular Scalementioning

confidence: 93%

Multiscale structural control of linked metal–organic polyhedra gel by aging-induced linkage-reorganization

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Section: Structural Rearrangement Of the Linked Mop Network At The Molecular Scalementioning

confidence: 93%

Multiscale structural control of linked metal–organic polyhedra gel by aging-induced linkage-reorganization

et al. 2021

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“…an average distance between micelles is about 20 nm (200 Å), indicated by the appearence a Bragg peak at Q = 0.03 Å -1 (4).…”

Section: A Number Of Micelles Increase By Increasing the Concentratmentioning

confidence: 99%

Small-Angle Neutron Scattering (SANS) Facility at BATAN for Nanostructure Studies in Materials Science and Biology

Putra¹

2010

AIP Conference Proceedings

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Structural changes of poly( N -isopropylacrylamide)-based microgels induced by hydrostatic pressure and temperature studied by small angle neutron scattering Structural analysis of cellulose hydrogel by small-angle and ultra-small-angle X-ray scattering AIP Conf. ABSTRACTA 36 meter small-angle neutron scattering (SANS) BATAN spectrometer (SMARTer) which is the second largest SANS spectrometer nowadays in the Asia-Oceania region was constructed at the neutron scattering laboratory (NSL) in Serpong, Indonesia. Lots of works on replacing, upgrading and improving the control system, experimental methods, data collection and reduction in the last three years have been carried out to revitalize and then optimize the performance of SMARTer. At first, some standard samples were measured for the inter-laboratory comparison and several kinds of substances such as liquid, gel, powder, and solid-state thin film have been investigated recently of proposed research interest. The morphological changes from ellipsoidal into cylindrical (worm-like) micelles of self-assembly amphiphilic molecules, sodium dodecyl sulfate (SDS) and transformation of disordered into ordered spherical micelle system from unimer Gaussian coils of PEO-PPO-PEO triblock copolymers (Pluronics) in solution by salt addition were also observed. Particle size and its distribution of spherical polystyrene latex and silica nanoparticles in dilute solution have been simply distinguished by applying a spherical calculation model. Bragg peaks which correspond to a lamellar structure was revealed from a powder sample of silver behenate [CH 3 (CH 2 ) 20 COOAg] nanoparticle and a solid-state PS-PEP, polystyrene-b-poly(ethylene-alt-propylene), diblock copolymer film. The growth mechanism and fractal structures from aggregation of nanoparticles such as Fe 3 O 4 ferrofluids or titanium-silica aerogels were investigated directly using a SANS technique through a power-law scattering of fractal structures approximation fitted at their scattering profiles. Meanwhile, magnetic structure from metal-alloys, CuNiFe showing anisotropic magnetic scattering structure properties up to 1 Tesla of external magnetic field was also accomplished confirming the nanocrystalline and magnetic domain sizes. The detail structure of n-dodecyl-β-Dmaltoside (β-DMS) core-shell micelle has been revealed by applying a contrast variation, H 2 O/D 2 O mixture. Preliminary investigation of globular protein on folding-unfolding, protein denaturation and protein self-assembly studies is being performed. It can be concluded that SMARTer, a 36 m SANS BATAN spectrometer becomes a major tool for structural investigations in the effective length scale of 1 -100 nm in materials science and biology.

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In situ scattering study of multiscale structural evolution during liquid–liquid phase transition in Mg-based metallic glasses

Liu

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Fractal Studies on Titanium-Silica Aerogels using SMARTer

Cited by 3 publications

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Multiscale structural control of linked metal–organic polyhedra gel by aging-induced linkage-reorganization

Multiscale structural control of linked metal–organic polyhedra gel by aging-induced linkage-reorganization

Small-Angle Neutron Scattering (SANS) Facility at BATAN for Nanostructure Studies in Materials Science and Biology

In situ scattering study of multiscale structural evolution during liquid–liquid phase transition in Mg-based metallic glasses

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