Understanding the role of nitrogen in plasma-assisted surface modification of magnetic recording media with and without ultrathin carbon overcoats

N Dwivedi, RJ Yeo, N Satyanarayana, S Kundu… - Scientific reports, 2015 - nature.com
A novel scheme of pre-surface modification of media using mixed argon-nitrogen plasma is
proposed to improve the protection performance of 1.5 nm carbon overcoats (COC) on …

Coherent anti-Stokes Raman spectroscopy of single and multi-layer graphene

A Virga, C Ferrante, G Batignani, D De Fazio… - Nature …, 2019 - nature.com
Spontaneous Raman spectroscopy is a powerful characterization tool for graphene
research. Its extension to the coherent regime, despite the large nonlinear third-order …

Graphene overcoats for ultra-high storage density magnetic media

N Dwivedi, AK Ott, K Sasikumar, C Dou, RJ Yeo… - Nature …, 2021 - nature.com
Hard disk drives (HDDs) are used as secondary storage in digital electronic devices owing
to low cost and large data storage capacity. Due to the exponentially increasing amount of …

Dual single atoms (Pt, Ni) and PtNi alloy nanoparticles encapsulated N-doped carbon framework for durable ORR and HER electrocatalysts

TD Le, DS Kim, GJ Oh, GS Shin, T Van Tran… - Sustainable Materials …, 2024 - Elsevier
High-activity, stable, and high-efficiency bifunctional Pt-based catalysts that promote oxygen
reduction reactions (ORRs) and hydrogen evolution reactions (HERs) are urgently needed …

Atomic Cross-Talk at the Interface: Enhanced Lubricity and Wear and Corrosion Resistance in Sub 2 nm Hybrid Overcoats via Strengthened Interface Chemistry

R Kumar, P Bharti, K Sasikumar, C Dhand, R Kumar… - Nano Letters, 2022 - ACS Publications
Friction, wear, and corrosion remain the major causes of premature failure of diverse
systems including hard-disk drives (HDDs). To enhance the areal density of HDDs beyond 1 …

Interface Engineering and Controlling the Friction and Wear of Ultrathin Carbon Films: High sp3 Versus High sp2 Carbons

N Dwivedi, RJ Yeo, Z Zhang, C Dhand… - Advanced Functional …, 2016 - Wiley Online Library
Understanding and engineering interfaces, and controlling the friction and wear of materials,
are extremely important for many technological applications, particularly for magnetic …

Natural coconut liquid derived nanosheets structured carbonaceous material for high-performance supercapacitors

YT Nakate, UT Nakate, RS Mane, DJ Shirale - Colloids and Surfaces A …, 2021 - Elsevier
Bio-derived carbon has been remarkably emerging potential candidates for high
performance super-capacitive materials. Herein, we report the spray deposited vertically …

Coconut-water-mediated carbonaceous electrode: A promising eco-friendly material for bifunctional water splitting application

SD Raut, NM Shinde, YT Nakate, BG Ghule… - ACS …, 2021 - ACS Publications
The organic and eco-friendly materials are extended to prevail over the worldwide energy
crisis where bio-inspired carbonaceous electrode materials are being prepared from …

Structural characterization of ultrathin diamond-like carbon overcoats for high areal density magnetic recording

W Chatarat, N Chanlek, C Euaruksakul, H Nakajima… - Materialia, 2023 - Elsevier
This paper reports a comprehensive study on chemical structures of ultrathin diamond-like
carbon (DLC) overcoats for high areal density magnetic recording. The DLC overcoats were …

Atomic scale interface manipulation, structural engineering, and their impact on ultrathin carbon films in controlling wear, friction, and corrosion

N Dwivedi, RJ Yeo, LJK Yak… - … Applied Materials & …, 2016 - ACS Publications
Reducing friction, wear, and corrosion of diverse materials/devices using< 2 nm thick
protective carbon films remains challenging, which limits the developments of many …