Electrical Characterization of Multi-Walled Carbon Nanotubes

León, Joseba; Flacker, Alexander; Ar, Vaz; Veríssimo, Carla; Mb, de Moraes; Moshkalev, Stanislav A.

doi:10.1166/jnn.2010.2585

Cited by 10 publications

(6 citation statements)

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“…To obtain the substrate (25 x 25mm), a thin layer of PA were exposed to UV light source (OSRAM 400W, wavelength 350-430 nm) for 180s, reaching the final thickness of 0.8 mm, for further details see Nobrega and Campos (21). Pre-treatment and nucleation are similar to one of the possible routes mentioned by Gawrilov (22), with adaptations (16).…”

Section: Experimental Processmentioning

confidence: 78%

Electroplated Magnet Membranes for MEMS Applications

et al. 2011

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The influence of a magnetic field on electrodeposition of nickel films over polymeric substrates which renders flexible membranes with permanent magnet layers is studied. Samples of membranes with nickel deposited by electroplating in presence and absence of magnetic field are compared. To improve adherence, the electroplated layer is deposited over an electroless contact layer, after a wet pre-treatment. Mechanical and magnetic properties of the samples were measured as function of process parameters. Experimental results confirm that the magnetic field has a positive impact over properties of deposited films.

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Section: Experimental Processmentioning

confidence: 78%

Electroplated Magnet Membranes for MEMS Applications

et al. 2011

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“…To build the Ni-P/Au hard mask, it is necessary to create a Sn/Pd seed layer onto the BCB using a process similar to the one proposed by Garrilow [14] with adaptations [15] using a two-step process. The sample was immersed successively in tin (Sn 2+ ) and palladium (Pd 2+ ) solutions three times.…”

Section: Methodsmentioning

confidence: 99%

Multi-Chip Module (MCM-D) Using Thin Film Technology

Adamo¹,

Flacker²,

Freitas³

et al. 2020

JICS

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Multi-chip Module (MCM) is a technology that can be applied to silicon and alumina modules allowing advantages in the integration complexity. This paper reports a MCM-D (D for deposition) technology suitable to fabricate passive components using two metal levels and non-photosensitive polymer benzocyclobutene as dielectric. The devices are produced using thin film technology, vacuum metallization, electroless and electrolytic deposition, photolithography process and wet etching. Electrical measurements and focused ion beam (FIB) were used to evaluate the characteristics of the MCM-D structures.

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“…33 Pre-treatment and nucleation are similar to one of the possible routes mentioned by Gawrilov, 34 with adaptations made due to specific material properties. 28 Pre-treatment.-Some ME samples were pre-treated with an acid solution, containing sulfuric and nitric acid 19:1 (%Vol), during time varying from 15 to 150s, with and without ultrasonic agitation.…”

Section: Methodsmentioning

confidence: 99%

“…A similar configuration was used to Nickel-Watt's bath electrowinning with Pt anode. 27 Here we report the application of this technique for deposition of thin Nickel films using the process described in Leon et al 28 Ni films is considered one of the best alternative to devices demanding good mechanical (hardness and flexibility) and magnetic properties along with thermal and chemical stability (corrosion and wear resistance), like lab-on-a-chips in which metallic film will be in contact to analyzed samples under analysis. [29][30][31][32] To achieve this objective, wet processes involving etching, catalytic activation and plating were investigated and optimized here to deposit a Ni film expecting excellent adhesion, and avoiding use of high-cost plasma or sputtering equipments.…”

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confidence: 99%

Electroplated Nickel Permanent Magnetic Films over Polymeric Membranes

Campos

Flacker

Vaz

et al. 2011

J. Electrochem. Soc.

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The influence of a magnetic field on electrodeposition of nickel films over polymeric substrates, which renders flexible membranes with a permanent magnet layer, has been studied. Samples of membranes with nickel deposited by electroplating in presence and absence of magnetic field are compared. The electroplated layer is deposited over an electroless contact layer, after a wet pre-treatment to improve adherence. Mechanical and magnetic properties of the samples were measured as function of process parameters. Experimental results confirm that the magnetic field has a positive impact over properties of deposited films. Pre-treatment using different process times influences uniformity and adherence of the deposited films. Results show also that films electroplated in presence of magnetic field outperformed those deposited in its absence, with enhanced maximum energy product and reduced surface roughness. On the other hand, films electroplated in presence of magnetic field tend to be less resistant to fracture during flexure tests.Nucleation.-The seed layer is obtained by sensitizing the polymer with an acid stannous chloride solution (1 g/l), then activating it with palladium chloride solution (0.25 g/l). The stannous ions (Sn 2þ ) absorbed on the surface reduce the palladium ions (Pd 2þ ), by the reaction (1). The palladium metal atoms form clusters and the seed layer which catalyzes the electroless nickel deposition. 35,36 z

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Electrical Characterization of Multi-Walled Carbon Nanotubes

Cited by 10 publications

References 0 publications

Electroplated Magnet Membranes for MEMS Applications

Electroplated Magnet Membranes for MEMS Applications

Multi-Chip Module (MCM-D) Using Thin Film Technology

Electroplated Nickel Permanent Magnetic Films over Polymeric Membranes

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