scispace - formally typeset
Search or ask a question
Author

Taíse Matte Manhabosco

Bio: Taíse Matte Manhabosco is an academic researcher from Universidade Federal de Ouro Preto. The author has contributed to research in topics: Corrosion & Boron nitride. The author has an hindex of 10, co-authored 34 publications receiving 400 citations. Previous affiliations of Taíse Matte Manhabosco include Universidade Federal do Rio Grande do Sul.

Papers
More filters
Journal ArticleDOI
TL;DR: In this article, the anticorrosive properties of nitrided Ti6Al4V in phosphate buffer saline solution (PBS), simulating the body environment, were evaluated by Electrochemical Impedance Spectroscopy (EIS).

123 citations

Journal ArticleDOI
TL;DR: Tribological and corrosion properties of Ti6Al4V alloy both bare and coated by diamond-like carbon (DLC) were investigated in PBS solution as mentioned in this paper, and the films obtained by a PACVD technique present high hardness, good corrosion and wear resistance and lower friction coefficient compared to bare alloy.
Abstract: Tribological and corrosion properties of Ti6Al4V alloy both bare and coated by diamond-like carbon (DLC) were investigated in PBS solution. The films obtained by a PACVD technique present high hardness, good corrosion and wear resistance and lower friction coefficient compared to bare alloy. Tribocorrosion tests on bare alloy showed that when wear stops, the alloy rapidly passivates. DLC films present superior wear resistance under dry conditions. However, film life is greatly reduced during tribocorrosion tests.

48 citations

Journal ArticleDOI
TL;DR: In this paper, diamond-like carbon films (DLC) were deposited on titanium substrates in acetonitrile and N,N-dimethyl formamide (DMF) liquids by the liquid-phase electrodeposition technique at ambient pressure and temperature.

41 citations

Journal ArticleDOI
TL;DR: In this paper, saccharin was added to the cobalt solution at three different concentrations: 10,g/l, 20 and 50 g/l. The additive caused a morphological, microstructural and magnetic behaviour change in cobalt films.
Abstract: The use of additives to improve the quality of electrodeposited magnetic films is of current interest since magnetic films are widely used in data storage devices and sensors. This is a study of the influence of adding sodium saccharin in the electrodeposition of cobalt thin films on silicon, the most widely used material in magnetic recording media. Saccharin was added to the cobalt solution at three different concentrations: 10 g/l, 20 g/l and 50 g/l. The additive caused a morphological, microstructural and magnetic behaviour change in cobalt films. The levelling and brightening effect of saccharin was verified visually and by atomic force microscope. The films became single-phase structured by adding 50 g/l saccharin, on the contrary of the dual-phase structure found in the basic Co solution. The remanent magnetization ( M r ) and the coercive field ( H c ) of the films were improved and the metallic nuclei size decreased as the saccharin concentration increased.

30 citations

Journal ArticleDOI
TL;DR: In this article, a study of corrosion resistance and cell viability of carbon films on bare and nitrided Ti-6Al-4V was presented, which showed that films tend to diminish the osteoblastic cell viability and the observed variations on film roughness do not improve cell viability.

26 citations


Cited by
More filters
01 May 1993
TL;DR: Comparing the results to the fastest reported vectorized Cray Y-MP and C90 algorithm shows that the current generation of parallel machines is competitive with conventional vector supercomputers even for small problems.
Abstract: Three parallel algorithms for classical molecular dynamics are presented. The first assigns each processor a fixed subset of atoms; the second assigns each a fixed subset of inter-atomic forces to compute; the third assigns each a fixed spatial region. The algorithms are suitable for molecular dynamics models which can be difficult to parallelize efficiently—those with short-range forces where the neighbors of each atom change rapidly. They can be implemented on any distributed-memory parallel machine which allows for message-passing of data between independently executing processors. The algorithms are tested on a standard Lennard-Jones benchmark problem for system sizes ranging from 500 to 100,000,000 atoms on several parallel supercomputers--the nCUBE 2, Intel iPSC/860 and Paragon, and Cray T3D. Comparing the results to the fastest reported vectorized Cray Y-MP and C90 algorithm shows that the current generation of parallel machines is competitive with conventional vector supercomputers even for small problems. For large problems, the spatial algorithm achieves parallel efficiencies of 90% and a 1840-node Intel Paragon performs up to 165 faster than a single Cray C9O processor. Trade-offs between the three algorithms and guidelines for adapting them to more complex molecular dynamics simulations are also discussed.

29,323 citations

12 Aug 2016
TL;DR: In this article, the authors proposed a hybrid threshold adaptable quantum secret sharing scheme, using an m-bonacci orbital angular momentum (OAM) pump, Lagrange interpolation polynomials, and reverse Huffman-Fibonacci-tree coding.
Abstract: With prevalent attacks in communication, sharing a secret between communicating parties is an ongoing challenge. Moreover, it is important to integrate quantum solutions with classical secret sharing schemes with low computational cost for the real world use. This paper proposes a novel hybrid threshold adaptable quantum secret sharing scheme, using an m-bonacci orbital angular momentum (OAM) pump, Lagrange interpolation polynomials, and reverse Huffman-Fibonacci-tree coding. To be exact, we employ entangled states prepared by m -bonacci sequences to detect eavesdropping. Meanwhile, we encode m -bonacci sequences in Lagrange interpolation polynomials to generate the shares of a secret with reverse Huffman-Fibonacci-tree coding. The advantages of the proposed scheme is that it can detect eavesdropping without joint quantum operations, and permits secret sharing for an arbitrary but no less than threshold-value number of classical participants with much lower bandwidth. Also, in comparison with existing quantum secret sharing schemes, it still works when there are dynamic changes, such as the unavailability of some quantum channel, the arrival of new participants and the departure of participants. Finally, we provide security analysis of the new hybrid quantum secret sharing scheme and discuss its useful features for modern applications.

400 citations

Journal ArticleDOI
TL;DR: This review will briefly explore major representatives of metallic biomaterials along with the key existing and emerging strategies for surface and bulk modification used to improve biointegration, mechanical strength and flexibility of biometals, and discuss their compatibility with the concept of 3D printing.
Abstract: Metallic biomaterials are engineered systems designed to provide internal support to biological tissues and they are being used largely in joint replacements, dental implants, orthopaedic fixations and stents. Higher biomaterial usage is associated with an increased incidence of implant-related complications due to poor implant integration, inflammation, mechanical instability, necrosis and infections, and associated prolonged patient care, pain and loss of function. In this review, we will briefly explore major representatives of metallic biomaterials along with the key existing and emerging strategies for surface and bulk modification used to improve biointegration, mechanical strength and flexibility of biometals, and discuss their compatibility with the concept of 3D printing.

376 citations

Journal ArticleDOI
TL;DR: Ta has the lowest wear rate compared to DLC, GLC and TiN because it has a lower wear rate with high contact pressure as well as higher hardness to elasticity ratio.

225 citations

Journal Article
TL;DR: In this article, the authors investigated the interlayer sliding energy landscape of hexagonal boron nitride (h-BN) via a van der Waals corrected density functional theory approach.
Abstract: The interlayer sliding energy landscape of hexagonal boron nitride (h-BN) is investigated via a van der Waals corrected density functional theory approach. It is found that the main role of the van der Waals forces is to anchor the layers at a fixed distance, whereas the electrostatic forces dictate the optimal stacking mode and the interlayer sliding energy. A nearly free-sliding path is identified, along which band gap modulations of ∼0.6 eV are obtained. We propose a simple geometric model that quantifies the registry matching between the layers and captures the essence of the corrugated h-BN interlayer energy landscape. The simplicity of this phenomenological model opens the way to the modeling of complex layered structures, such as carbon and boron nitride nanotubes.

208 citations