A5047981728- Laser Material Processing Techniques
- biodegradable polymer synthesis and properties
- Advanced Surface Polishing Techniques
- Silk-based biomaterials and applications
- Additive Manufacturing Materials and Processes
- Additive Manufacturing and 3D Printing Technologies
- Advanced machining processes and optimization
- Hydrogels: synthesis, properties, applications
- Welding Techniques and Residual Stresses
- 3D IC and TSV technologies
- Nanocomposite Films for Food Packaging
- Semiconductor materials and devices
- Advanced Machining and Optimization Techniques
- Bone Tissue Engineering Materials
- Electrospun Nanofibers in Biomedical Applications
- Metal and Thin Film Mechanics
- Advanced Cellulose Research Studies
- Dye analysis and toxicity
- Microplastics and Plastic Pollution
- Adhesion, Friction, and Surface Interactions
- Semiconductor Lasers and Optical Devices
- Advanced Measurement and Metrology Techniques
- Wound Healing and Treatments
- Laser and Thermal Forming Techniques
- Advanced Sensor and Energy Harvesting Materials
Tomas Bata University in Zlín
2019-2022
Indian Institute of Technology Guwahati
2016-2021
Fraunhofer USA
2007-2016
Fraunhofer USA Center for Laser Applications
2015
University of Michigan
2012-2013
Fraunhofer Institute for Laser Technology
2009
Wayne State University
2008
Purdue University West Lafayette
2006
ABSTRACT This study explores the plasticizing effect of coconut oil (CO) on PLA for evaluating its suitability flexible packaging. Changes in morphological, mechanical, thermal, rheological, barrier and optical properties melt compounded Poly(lactic acid)–Coconut (PLA–CO) blend were investigated by varying mixing ratio. Water vapor permeability blends decreased 58% at 7 wt % plasticizer content. The tensile strength showed a decreasing trend with increasing percentage while elongation an...
In this study we report the preparation of novel multicomponent hydrogels as potential biomaterials for injectable comprised alginate, casein and bacterial cellulose impregnated with iron nanoparticles (BCF). These demonstrated amide cross-linking alginate–casein, ionic alginate supramolecular interaction due to incorporation BCF. Incorporation BCF into based on natural biopolymers was done reinforce impart magnetic properties critical targeted drug delivery. This aimed improve overall...
This article reports a novel fabrication of branched cum cross-linked poly(lactic acid) (PLA) with nanosilk fibroin graft chain topology by reactive extrusion process. It could be possible the addition small amount radical initiator (dicumyl peroxide (DCP)). Grafting silk nanocrystals (SNCs) on PLA macromolecules that provides remarkable improvement in rheological and thermal properties latter are confirmed 1H NMR Fourier transform infrared investigation. Significant is observed zero shear...
To reduce carbon emission, transportation sector has adapted lithium-ion battery-based hybridization of gasoline and diesel engines due to its efficiency, the availability technologies, nation-wide infrastructures. cut prismatic cylindrical electrodes for batteries, die cutting rotary knife slitting have been used. Both techniques disadvantages such as tool wear, process instability, inconsistency quality, redesign mechanical processes various battery sizes. High speed remote laser overcomes...
The article demonstrates the crystalline silk nano-discs (CSNs), with well-controlled morphology, which upon magnetization, yields magnetic nano-discs, making both prominent alternatives for replacing metal templates such as gold, silver, and so on in therapeutics implants. isolated β-sheet-rich discotic CSNs have ~50 nm diameter, high crystallinity (> 90%), are insoluble but provide good dispersibility stability aqueous solutions. melt blending-cum-electrospinning of functionalized CSN...
ABSTRACT Exacerbated environmental concerns about petroleum‐based plastics provide the impetus to foster sustainable poly(lactic acid) (PLA) based food packaging. Nonetheless, PLA has its foibilities such as brittleness, higher gas permeability, and slow crystallization. With intent mitigate above shortcomings, we report a maiden effort for fabrication of PLA/crystalline silk nano‐discs (CSNs) bionanocomposites by melt‐extrusion high temperature engineering packaging applications. Acid...
ABSTRACT This work demonstrates the synthesis of lactic acid oligomer‐grafted‐untreated bacterial cellulose (OLLA‐ g ‐BC) by in situ condensation polymerization which increased compatibilization between hydrophobic poly(lactic acid) (PLA) and hydrophilic BC, thus enhancing various properties PLA‐based bionanocomposites, indispensable for stringent food‐packaging applications. During OLLA‐ ‐BC, BC is converted into due to structural grafting OLLA chains with molecules. Subsequently,...
Cut surface quality of electrodes' affect lithium-ion battery performance. Current uses mechanical cutting require expensive tooling. Furthermore, tool wears out over time so that it results in process instability and poor cut quality. This may cause an internal short circuit significant heat generation. These problems can be solved by using a laser technique since has many advantages, such as no wear, high energy concentration, fast processing speed, very narrow affected zone, applicability...
ABSTRACT In this work, novel biodegradable crystalline silk nano‐discs (CSNs) having a disc‐like morphology have been utilized for fabrication of poly(lactic acid) (PLA) nanocomposites by melt‐extrusion. The main focus is to investigate the effect CSN on isothermal melt crystallization kinetics, spherulitic growth rates, morphology, and hydrolytic degradation PLA. Spherulitic rates are examined over wide range temperatures (90–120 °C). With incorporation CSN, kinetics PLA/CSN increases,...
Fiber lasers in MOPA configuration are a very flexible tool for micromachining applications since they allow to independently adjust the pulse parameters such as duration, repetition rates and energy while maintaining constant beam quality. The developed fiber laser provides an average power of 11 W maximum 0.5 mJ wide range at diffraction limited Its duration rate continuously adjustable from 10 ns cw 10kHz 1MHz respectively. Ablation experiments were carried out on stainless steel, nickel...