Investigations on performance viability of NiTi, NiTiCu, CuAlNi and CuAlNiMn shape memory alloy/Kapton composite thin film for actuator application

Jayachandran, S. Arul; Katoch, Akash; Prabu, S.S. Mani; Manikandan, M.; Muralidharan, M.; Brolin, A.; Palani, I. A.

doi:10.1016/j.compositesb.2019.107182

Cited by 43 publications

(8 citation statements)

References 35 publications

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“…In biomedical engineering several attempts have been made to develop a Micro-Electro-Mechanical System (MEMS) using Cu-based shape memory alloys [ 24 , 25 , 26 ]. It is known that those devices can be constructed from various materials (silicone, polymers, ceramic), but a big step forward was made with the advent of intelligent BioMEMS.…”

Section: Discussionmentioning

confidence: 99%

In Vitro Evaluation of the Potential Anticancer Properties of Cu-Based Shape Memory Alloys

Lazić

Milašin

et al. 2023

Materials

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Due to the unique functional properties of shape memory alloys (SMAs) and current scientific interest in Cu-containing biomaterials, a continuously cast Cu-Al-Ni alloy in the form of rods has been investigated as a potential candidate for biomedical application. Additionally, the fact that Cu- complexes have an antitumour effect served as a cornerstone to develop more efficient drugs based on trace element complexes. In line with that, our study aimed to analyse the basic properties of the Cu-Al-Ni alloy, along with its anticancer properties. The detailed chemical analysis of the Cu-Al-Ni alloy was performed using XRF and SEM/EDX analyses. Furthermore, a microstructural and structure investigation was carried out, combined with hardness measurements using the static Vickers method. Observations have shown that the Cu-Al-Ni microstructure is homogeneous, with the presence of typical martensitic laths. XRD analysis confirmed the presence of two phases, β′ (monoclinic) and γ′ (orthorhombic). The viability of osteosarcoma cells in contact with the Cu-Al-Ni alloy was evaluated using epifluorescence microscopy, while their morphology and attachment pattern were observed and analysed using a high-resolution SEM microscope. Biocompatibility testing showed that the Cu-Al-Ni alloy exerted a considerable antineoplastic effect.

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Section: Discussionmentioning

confidence: 99%

In Vitro Evaluation of the Potential Anticancer Properties of Cu-Based Shape Memory Alloys

Lazić

Milašin

et al. 2023

Materials

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“…The shape recovery analysis was carried out as-reported in the previous work [18]. The plate heating setup consists of a substrate heater and a temperature controller.…”

Section: Shape Recovery Analysis Through Plate Heatingmentioning

confidence: 99%

Parametric investigation on laser micro-patterned CuAlNi Shape-memory alloy (SMA) bimorph micromirror and its actuation performance

Jayachandran

Karna

Gangwar

et al. 2021

Trans Indian Inst Met

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In this work, Shape-memory alloy (SMA)-based micromirrors were fabricated and the actuation was controlled through thermal stimulus. The micromirrors play a significant role in scanning and light deflection in the MEMS field. The SMA micromirrors were developed by coating CuAlNi thin film on strained kapton polyimide substrate using thermal evaporation. Later patterns were made on micromirrors for transmission and reflection of the light beam during actuation. The displacement of each distinct pattern was explored at different voltages ranging from 1 to 3 V through Joule heating technique. The maximum displacement observed was 1.9 mm for deltoid-patterned micromirror at 3 V. The ladder pattern recorded the minimum deflection of 1.1 mm at 3 V. The shape recovery ratio analysis showed that deltoid pattern bimorph had the highest recovery of 1.656. Energy-Dispersive X-ray Spectroscopy (EDS) analysis showed that the composition was maintained after the deposition.

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“…Hou et al [ 32 ] pointed out the importance of the substrate temperature and the fact that this can be challenging for polymeric substrates with shape-memory effect found for 3 μm TiNi sputtered at 703 K on 7.6 μm thick Kapton ® polyimide substrate. Jayachandran et al [ 33 ] deposited 1.75 μm NiTi and Cu-based films on a 50 μm pre-strained Kapton polyimide sheet using a flash evaporation technique. Pre-straining was mentioned as a step in generating the microactuators.…”

Section: Introductionmentioning

confidence: 99%

Actuating Bimorph Microstructures with Magnetron-Sputtered Ti-Ni-Cu Shape Memory Alloy Films

et al. 2022

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The generation of microactuation using narrow thermal hysteresis Ti-Ni-Cu shape-memory alloy films deposited on non-metallic substrates as the active element is studied based on a model previously developed for Ni-Ti/Si bimorphs. To this end, the compositional range in which the B2 (monoclinic) → B19 (orthorhombic) martensitic phase transformation occurs was considered, and films were deposited by magnetron sputtering on heated Si and Kapton substrates. Ultra-fine grains were observed for the 550 °C deposition temperature. The selected composition was close to Ti50Ni35Cu15, so the narrowing of the thermal hysteresis is not associated with a significant reduction in shape recovery capability. The microstructure and composition of the target materials and as-deposited films used in our experiments were characterized by X-ray diffraction and scanning electron microscopy, whereas the temperature dependence of the volume fraction of the martensite phase was derived using differential scanning calorimetry records for the target materials and from the temperature dependence of the electrical resistance data for the films. An original model was used to predict the actuation of cantilever-type bimorphs with Kapton and Si substrates.

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Investigations on performance viability of NiTi, NiTiCu, CuAlNi and CuAlNiMn shape memory alloy/Kapton composite thin film for actuator application

Cited by 43 publications

References 35 publications

In Vitro Evaluation of the Potential Anticancer Properties of Cu-Based Shape Memory Alloys

In Vitro Evaluation of the Potential Anticancer Properties of Cu-Based Shape Memory Alloys

Parametric investigation on laser micro-patterned CuAlNi Shape-memory alloy (SMA) bimorph micromirror and its actuation performance

Actuating Bimorph Microstructures with Magnetron-Sputtered Ti-Ni-Cu Shape Memory Alloy Films

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