Cover Page November-2019-Advanced Materials Letters

Advanced Materials Letters

Volume 10, Issue 11, Pages 825-831, November 2019
About Cover

Electric vehicles have seen steady development and growth over the last half-decade. The integration of modern technologies like Artificial Intelligence and Machine Learning leading the advancements in the lives and durability of batteries and their efficiency. With each passing year, electric mobility is seeing new heights. And more than 2 million electric vehicles started running on the road which is a record for a calendar year. If the current trends continue, the number of electric vehicles that would be sold in the year 2030 could be as high as 43 million. The cover photo of this November 2019 issue is inspired by the editorial article written by Dr. Ashutosh Tiwari on Current Global Scenario of Electric Vehicles.


Nanosecond Laser Surface Patterning of Ti6Al4V Bio-alloy for Improved Biological Performance

Sunita Kedia1,* Shazia Shaikh1,2, Ananda G. Majumdar3, Mahesh Subramanian3,4, A. K. Sahu5, Sucharita Sinha1,4

1Laser & Plasma Surface Processing Section, Bhabha Atomic Research Centre, Mumbai 400085, India

2University of Mumbai, Fort, Mumbai 400001, India

3Bio-Organic Division, Bhabha Atomic Research Centre, Mumbai 400085, India

4Homi Bhabha National Institute, Training School Complex, Anushaktinagar, Mumbai 400094, India

5Glass and Advanced Material Division, Bhabha Atomic Research Centre, Mumbai 400085, India

Adv. Mater. Lett., 2019, 10 (11), pp 825-831

DOI: 10.5185/amlett.2019.0026

Publication Date (Web): Oct 04, 2019

E-mail: skedia@barc.gov.in

Abstract

Biological performances such as osseointegration and biocompatibility of Ti6Al4V alloy primarily depends on topological and chemical properties of the surface of the bio-material. Here, a nanosecond pulsed Nd:YAG laser has been used to generate microstructures on Ti6Al4V surface by irradiating with 6000 number of laser shots per site. Formation of ripple structure and generation of sub-oxide phases on laser treated titanium surface supported uniform and dense growth of HAP on the sample. In contrast, discrete nucleation of HAP with comparable higher precipitation of calcium occurred on untreated Ti6Al4V sample when subjected to similar in vitro tests by exposing the sample to simulated body fluid. Initial interaction and growth of U2OS cells on untreated and laser treated Ti6Al4V substrates were quantified using MTT assay. More numbers of cell were attached to laser treated sample in comparison to untreated sample as observed in confocal microscope images. Our results suggested that surface patterning of Ti6Al4V alloy using nanosecond pulsed laser promoted bio-integration without compromising its biocompatibility. © VBRI Press.

Keywords

Laser surface patterning, Ti6Al4V bio-alloy, hydroxyapatite, U2OS cell.

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