Mechanical Property Enhancement of Nanocomposite Microstructures Generated by Two Photon Polymerization

2010 ◽  
Vol 1 (4) ◽  
Author(s):  
M. Alubaidy ◽  
K. Venkatakrishnan ◽  
B. Tan ◽  
Abdulsalam Mahmood
Keyword(s):  
Mechanical Properties ◽  
Femtosecond Laser ◽  
Volume Fraction ◽  
Laser Material Processing ◽  
Laser Material ◽  
Two Photon ◽  
Reinforced Polymer ◽  
Direct Fabrication ◽  
Polymer Microstructures ◽  
Two Photon Polymerization

The mechanical properties of nanofiber reinforced polymer microstructures were investigated in this work by means of nanoindentation. The femtosecond laser was used to generate nanofibers on selected area on the surface of the substrate and to generate microstructures. These microstructures were formed via two photon polymerization using femtosecond laser material processing by incorporation of silicon nanofibers into Ormocer matrix. Results show that the hardness and elastic modulus of the nanocomposites have improved by 25% and 75%, respectively, with the incorporation of nanofibers using the described method, which has the potential of direct fabrication of reinforced micro-/nanostructures. The volume fraction of the generated nanofibers in the nanocomposite was calculated by using nanoindentation analysis.

scholarly journals Fabrication Of Nanofibers Reinforced Polymer Microstructures Using Femtosecond Laser Material Processing

2021 ◽  
Author(s):  
Mohammed-Amin Alubaidy
Keyword(s):  
Material Processing ◽  
Femtosecond Laser ◽  
Laser Material Processing ◽  
Laser Material ◽  
Reinforced Polymer ◽  
Polymer Microstructures

Fabrication Of Nanofibers Reinforced Polymer Microstructures Using Femtosecond Laser Material Processing

scholarly journals Fabrication Of Nanofibers Reinforced Polymer Microstructures Using Femtosecond Laser Material Processing

2021 ◽  
Author(s):  
Mohammed-Amin Alubaidy
Keyword(s):  
Material Processing ◽  
Femtosecond Laser ◽  
Laser Material Processing ◽  
Laser Material ◽  
Reinforced Polymer ◽  
Polymer Microstructures

Fabrication Of Nanofibers Reinforced Polymer Microstructures Using Femtosecond Laser Material Processing

scholarly journals Two-Photon Polymerization of Albumin Hydrogel Nanowires Strengthened with Graphene Oxide

Biomimetics ◽  
2021 ◽  
Vol 6 (4) ◽  
pp. 66
Author(s):  
Nikita Nekrasov ◽  
Natalya Yakunina ◽  
Vladimir Nevolin ◽  
Ivan Bobrinetskiy ◽  
Pavel Vasilevsky ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Graphene Oxide ◽  
Femtosecond Laser ◽  
Laser Pulses ◽  
Femtosecond Laser Pulses ◽  
Nanoelectromechanical Systems ◽  
Force Microscopy ◽  
Two Photon ◽  
Direct Laser ◽  
Two Photon Polymerization

Multifunctional biomaterials can pave a way to novel types of micro- and nanoelectromechanical systems providing benefits in mimicking of biological functions in implantable, wearable structures. The production of biocomposites that hold both superior electrical and mechanical properties is still a challenging task. In this study, we aim to fabricate 3D printed hydrogel from a biocomposite of bovine serum albumin with graphene oxide (BSA@GO) using femtosecond laser processing. We have developed the method for functional BSA@GO composite nanostructuring based on both two-photon polymerization of nanofilaments and direct laser writing. The atomic-force microscopy was used to probe local electrical and mechanical properties of hydrogel BSA@GO nanowires. The improved local mechanical properties demonstrate synergistic effect in interaction of femtosecond laser pulses and novel composite structure.

scholarly journals Rapid Fabrication of Continuous Surface Fresnel Microlens Array by Femtosecond Laser Focal Field Engineering

Micromachines ◽  
2020 ◽  
Vol 11 (2) ◽  
pp. 112 ◽  
Author(s):  
Linyu Yan ◽  
Dong Yang ◽  
Qihuang Gong ◽  
Yan Li
Keyword(s):  
Femtosecond Laser ◽  
Three Dimensional ◽  
Fresnel Lens ◽  
Two Dimensional ◽  
Direct Writing ◽  
Lens Array ◽  
Two Photon ◽  
Rapid Fabrication ◽  
Continuous Surface ◽  
Two Photon Polymerization

Femtosecond laser direct writing through two-photon polymerization has been widely used in precision fabrication of three-dimensional microstructures but is usually time consuming. In this article, we report the rapid fabrication of continuous surface Fresnel lens array through femtosecond laser three-dimensional focal field engineering. Each Fresnel lens is formed by continuous two-photon polymerization of the two-dimensional slices of the whole structure with one-dimensional scan of the corresponding two-dimensional engineered intensity distribution. Moreover, we anneal the lens array to improve its focusing and imaging performance.

Assessing of Mechanical Properties of Natural Fiber Reinforced Polymer Matrix Hybrid Composites

2015 ◽  
Vol 766-767 ◽  
pp. 199-204 ◽  
Author(s):  
Kumar Jayachandran Nirmal ◽  
D. Premkumar
Keyword(s):  
Mechanical Properties ◽  
Epoxy Resin ◽  
Natural Fiber ◽  
Volume Fraction ◽  
Hybrid Composites ◽  
Natural Fibres ◽  
Fiber Reinforced Polymer ◽  
Resin Matrix ◽  
Reinforced Polymer ◽  
Individual Type

An experimental analysis has been carried out to investigate the mechanical properties of composites reinforced by sisal, coir, and banana fibres into epoxy resin matrix. The natural fibres were extracted by retting and manual processes. The composites fabricated by epoxy resin and reinforcement in the hybrid combination of Sisal-Banana and Sisal-Coir with the volume fraction of fibres varying from 5% to 30%. It has been identified that the mechanical properties increase with the increase of volume fraction of fibres to a certain extent and then decreases. The hybridization of the reinforcement in the composite shows greater mechanical properties when compared to individual type of natural fibres reinforced. For all the composites tested, the tensile strength of the composite increased up to 25% of volume fraction of the fibres and further for the increase in the volume fraction of fibre the mechanical properties were decreased. As same as tensile properties, the flexural and impact strength also increased linearly up to 25% of volume fraction of fibres and further for the increase in the volume fraction of fibre the mechanical properties were slightly decreased. Key Words: Sisal, Banana, Coir, Epoxy, Hybrid composite.

Femtosecond Laser Material Processing - How Short is Short?

2005 ◽  
pp. 819-821
Author(s):  
Yehiam Prior ◽  
Kaiyin Zhang ◽  
V. Batenkov ◽  
Yuri Paskover ◽  
I.Sh. Averbukh ◽  
...  
Keyword(s):  
Material Processing ◽  
Femtosecond Laser ◽  
Laser Material Processing ◽  
Laser Material

scholarly journals Band structure of cavity-type hypersonic phononic crystals fabricated by femtosecond laser-induced two-photon polymerization

2016 ◽  
Vol 108 (20) ◽  
pp. 201901 ◽  
Author(s):  
A. M. Rakhymzhanov ◽  
A. Gueddida ◽  
E. Alonso-Redondo ◽  
Z. N. Utegulov ◽  
D. Perevoznik ◽  
...  
Keyword(s):  
Femtosecond Laser ◽  
Band Structure ◽  
Phononic Crystals ◽  
Two Photon ◽  
Two Photon Polymerization

scholarly journals Bioinspired polymer microstructures for directional transport of oily liquids

2017 ◽  
Vol 4 (3) ◽  
pp. 160849 ◽  
Author(s):  
C. Plamadeala ◽  
F. Hischen ◽  
R. Friesenecker ◽  
R. Wollhofen ◽  
J. Jacak ◽  
...  
Keyword(s):  
Friction And Wear ◽  
Technical Problems ◽  
Oil Transport ◽  
Two Photon ◽  
Liquid Front ◽  
Polymer Microstructures ◽  
Wear Reduction ◽  
The Right ◽  
Directional Transport ◽  
Two Photon Polymerization

Nature has always served as an inspiration for scientists, helping them to solve a large diversity of technical problems. In our case, we are interested in the directional transport of oily liquids and as a model for this application we used the flat bug Dysodius lunatus . In this report, we present arrays of drops looking like polymer microstructures produced by the two-photon polymerization technique that mimic the micro-ornamentation from the bug's cuticle. A good directionality of oil transport was achieved, directly controlled by the direction of the pointed microstructures at the surface. If the tips of the drop-like microstructures are pointing towards the left side, the liquid front moves to the right and vice versa. Similar effects could be expected for the transport of oily lubricants. These results could, therefore, be interesting for applications in friction and wear reduction.

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