Thermal processing of zeolite seed layers for the fabrication of compact oriented MFI zeolite films

CrystEngComm ◽  
2018 ◽  
Vol 20 (32) ◽  
pp. 4531-4535 ◽  
Author(s):  
Yong Peng ◽  
Ruilan Xu ◽  
Xinde Jiang ◽  
Sheng Xu ◽  
Zhengbao Wang
Keyword(s):  
Thermal Processing ◽  
Seed Layer ◽  
Mfi Zeolite ◽  
Covalent Linkage ◽  
Zeolite Film ◽  
Zeolite Films ◽  
Seed Layers

The formation of a close-packed oriented MFI zeolite film through thermal processing created a strong covalent linkage between the seed layer and the substrate.

scholarly journals Integrated Polypyrrole Flexible Conductors for Biochips and MEMS Applications

2012 ◽  
Vol 2012 ◽  
pp. 1-5 ◽  
Author(s):  
Rakefet Ofek Almog ◽  
Hadar Ben-Yoav ◽  
Yelena Sverdlov ◽  
Tsvi Shmilovich ◽  
Slava Krylov ◽  
...  
Keyword(s):  
Cyclic Voltammetry ◽  
Aspect Ratio ◽  
Seed Layer ◽  
Conductive Polymer ◽  
Sensors And Actuators ◽  
Flexible Sensors ◽  
Planar Structures ◽  
Polymeric Substrates ◽  
Seed Layers ◽  
Structural Polymers

Integrated polypyrrole, a conductive polymer, interconnects on polymeric substrates were microfabricated for flexible sensors and actuators applications. It allows manufacturing of moving polymeric microcomponents suitable, for example, for micro-optical-electromechanical (MOEMS) systems or implanted sensors. This generic technology allows producing “all polymer” components where the polymers serve as both the structural and the actuating materials. In this paper we present two possible novel architectures that integrate polypyrrole conductors with other structural polymers: (a) polypyrrole embedded into flexible polydimethylsiloxane (PDMS) matrix forming high aspect ratio electrodes and (b) polypyrrole deposited on planar structures. Self-aligned polypyrrole electropolymerization was developed and demonstrated for conducting polymer lines on either gold or copper seed layers. The electropolymerization process, using cyclic voltammetry from an electrolyte containing the monomer, is described, as well as the devices’ characteristics. Finally, we discuss the effect of integrating conducting polymers with metal seed layer, thus enhancing the device durability and reliability.

TPA+-Mediated Conversion of Silicon Wafer into Preferentially-Oriented MFI Zeolite Film under Steaming

2007 ◽  
Vol 19 (17) ◽  
pp. 4120-4122 ◽  
Author(s):  
Watcharop Chaikittisilp ◽  
Mark E. Davis ◽  
Tatsuya Okubo
Keyword(s):  
Silicon Wafer ◽  
Mfi Zeolite ◽  
Zeolite Film

Thickness effect of sputtered ZnO seed layer on the fabrication of ZnO nanorods on flexible polyimide films and their ethanol gas sensing properties

2011 ◽  
Vol 1303 ◽  
Author(s):  
Hosang Ahn ◽  
Seon-Bae Kim ◽  
Dong-Joo Kim
Keyword(s):  
Seed Layer ◽  
Flexible Substrate ◽  
Zno Nanorods ◽  
Debye Length ◽  
Morphological Characteristics ◽  
Gas Absorption ◽  
Thickness Effect ◽  
Nitrate Hexahydrate ◽  
Zno Nanostructures ◽  
Seed Layers

ABSTRACTControlled ZnO nanostructures were grown on a flexible substrate for the future development of smart sensing tags. Thermolysis-assisted chemical solution deposition was used to grow ZnO nanorods at 85°C from 0.01mol of Zinc nitrate hexahydrate and HMT (Hexamethyltetramine) solution. To promote and modulate the ZnO nanorods, R.F. sputtered ZnO seed layers were deposited on polyimide substrates at various film thicknesses in the range of 8 to 160 nm. The optimum processing conditions to fabricate ZnO nanostructures have been investigated to examine the growth behaviors and to correlate the process parameters with the morphological characteristics. When the ethanol gas sensitivities were measured at different thickness of ZnO seed layers before growing ZnO nanorods, the highest sensitivity was obtained at 40 nm thick ZnO film at 300°C where the film thickness is similar to the Debye length. When ZnO nanorods were grown on such a ZnO seed layer, the sensitivities were more heavily influenced by the ZnO nanostructures rather than the thickness of the seed layer probably due to the dominant proportion of carrier density involved with the gas absorption.

Effects of composition and phonon scattering mechanisms on thermal transport in MFI zeolite films

2007 ◽  
Vol 102 (5) ◽  
pp. 053523 ◽  
Author(s):  
Yeny Hudiono ◽  
Abraham Greenstein ◽  
Carine Saha-Kuete ◽  
Brandon Olson ◽  
Samuel Graham ◽  
...  
Keyword(s):  
Thermal Transport ◽  
Phonon Scattering ◽  
Mfi Zeolite ◽  
Scattering Mechanisms ◽  
Zeolite Films

Solvent-Free Secondary Growth of Highly b-Oriented MFI Zeolite Films from Anhydrous Synthetic Powder

2019 ◽  
Vol 141 (7) ◽  
pp. 2916-2919 ◽  
Author(s):  
Xiaofei Lu ◽  
Yanwei Yang ◽  
Junjia Zhang ◽  
Yushan Yan ◽  
Zhengbao Wang
Keyword(s):  
Secondary Growth ◽  
Solvent Free ◽  
Mfi Zeolite ◽  
Zeolite Films

Microstructural control of a SSZ-13 zeolite film via rapid thermal processing

2019 ◽  
Vol 591 ◽  
pp. 117342 ◽  
Author(s):  
Jinseong Kim ◽  
Eunhee Jang ◽  
Sungwon Hong ◽  
Dongjae Kim ◽  
Eunjoo Kim ◽  
...  
Keyword(s):  
Thermal Processing ◽  
Rapid Thermal Processing ◽  
Zeolite Film ◽  
Microstructural Control

Effect of Hydrothermal Solutions on Optical and Electrical Properties of ZnO Nanowires Grown on a ZnO:Al Seed Layer for Improved Mechanical Performance

2020 ◽  
Vol 15 (3) ◽  
pp. 307-315
Author(s):  
H. Tugral Arslan ◽  
Cuneyt Arslan ◽  
N. Baydogan
Keyword(s):  
Seed Layer ◽  
Mechanical Performance ◽  
Sol Gel ◽  
Soda Lime ◽  
Zinc Nitrate ◽  
Zno Nanowires ◽  
Hydrothermal Growth ◽  
Optimal Size ◽  
Zno Nanowire ◽  
Seed Layers

ZnO nanowire arrays were fabricated by hydrothermal growth on Al-doped ZnO (ZnO:Al) seed layers coated on soda-lime silicate glass by sol–gel coating. The properties of the ZnO:Al seed layer were evaluated to obtain ZnO nanowires with the optimal size and length and to realize suitable adhesion of the ZnO:Al grains to the substrate. The optimal mechanical performance (adhesion and abrasion resistance) of the ZnO:Al seed layer was obtained at Al 1 at.%. The seed layers annealed between 400 and 500 C exhibited enhanced ZnO nanowire growth. Increasing the annealing temperature within this range improved the electrical and optical properties of the nanowires. Additionally, two chemical compounds, zinc acetate (ZA) and zinc nitrate (ZN), were used to compare the effects of the solution type on the hydrothermal growth. The nanowires grown in the ZA solution were thicker and had higher electrical conductivity compared to the ZN solution. The gamma transmission technique was used to determine the agglomeration of ZnO:Al nanospheres and to examine the crystallite size and density of the ZnO:Al seed layers.

Synthesis of MFI zeolite films on optical fibers for detection of chemical vapors

2005 ◽  
Vol 30 (11) ◽  
pp. 1270 ◽  
Author(s):  
Hai Xiao ◽  
Jian Zhang ◽  
Junhang Dong ◽  
Ming Luo ◽  
Robert Lee ◽  
...  
Keyword(s):  
Optical Fibers ◽  
Mfi Zeolite ◽  
Zeolite Films
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