Nanoimprint lithography: Emergent materials and methods of actuation

Cox, Lewis M.; Martinez, Alina M.; Blevins, Adrienne; Sowan, Nancy; Ding, Yifu; Bowman, Christopher N.

doi:10.1016/j.nantod.2019.100838

Cited by 111 publications

(82 citation statements)

References 122 publications

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“…The second stage includes substrates covered with a suspension containing monodisperse colloids (e.g., polystyrene) after a compound treatment to improve their hydrophilic character. After drying, a hexagonal close-pressed (HCP) monolayer or bilayer, called a colloidal crystal mask [ 14 ] (CCM), is framed, and this mask is then used to design new nanospheres ( Figure 3 ). The subsequent removal of the mask (lift-off) by sonication in an adequate solvent or by stripping leaves an array of ordered nanodots on the surface of the substrate.…”

Section: Classification Of Nanostructuresmentioning

confidence: 99%

“…An annealing step is sometimes necessary to crystallise the sample or/and induce a crystallographic phase change. Nanosphere lithography is otherwise called colloidal lithography or characteristic lithography [ 14 , 15 ].…”

Section: Classification Of Nanostructuresmentioning

confidence: 99%

“…Furthermore, a few gatherings have hypothetically examined the behaviour of colloidal suspensions to comprehend their steadiness and additionally the system of arrangement of the mask [ 18 ]. Through the years, nanosphere lithography has been attracting attention because of its capability to fabricate a wide assortment of one-, two- or three-dimensional nanostructures [ 14 , 15 , 16 , 17 , 18 ]. For biomedical applications, the most reasonable strategy for manufacturing nanospheres by this method with desired properties ought to be accurately assessed.…”

Section: Classification Of Nanostructuresmentioning

confidence: 99%

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Nanomaterials for Biomedical Applications: Production, Characterisations, Recent Trends and Difficulties

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Designing of nanomaterials has now become a top-priority research goal with a view to developing specific applications in the biomedical fields. In fact, the recent trends in the literature show that there is a lack of in-depth reviews that specifically highlight the current knowledge based on the design and production of nanomaterials. Considerations of size, shape, surface charge and microstructures are important factors in this regard as they affect the performance of nanoparticles (NPs). These parameters are also found to be dependent on their synthesis methods. The characterisation techniques that have been used for the investigation of these nanomaterials are relatively different in their concepts, sample preparation methods and obtained results. Consequently, this review article aims to carry out an in-depth discussion on the recent trends on nanomaterials for biomedical engineering, with a particular emphasis on the choices of the nanomaterials, preparation methods/instruments and characterisations techniques used for designing of nanomaterials. Key applications of these nanomaterials, such as tissue regeneration, medication delivery and wound healing, are also discussed briefly. Covering this knowledge gap will result in a better understanding of the role of nanomaterial design and subsequent larger-scale applications in terms of both its potential and difficulties.

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Section: Classification Of Nanostructuresmentioning

confidence: 99%

Section: Classification Of Nanostructuresmentioning

confidence: 99%

Section: Classification Of Nanostructuresmentioning

confidence: 99%

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Nanomaterials for Biomedical Applications: Production, Characterisations, Recent Trends and Difficulties

et al. 2021

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“…These materials combined the groundbreaking properties of advanced materials, i.e., reshapability, remoldability and shape memory at the nanoscale. An interesting review on nanoimprint lithography presented by this research group summarizes the emergent materials used, most of which were based on click chemistry [217].…”

Section: Advanced Technological Applications Of Thermosets Obtained Bmentioning

confidence: 99%

The Use of Click-Type Reactions in the Preparation of Thermosets

et al. 2020

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Click chemistry has emerged as an effective polymerization method to obtain thermosets with enhanced properties for advanced applications. In this article, commonly used click reactions have been reviewed, highlighting their advantages in obtaining homogeneous polymer networks. The basic concepts necessary to understand network formation via click reactions, together with their main characteristics, are explained comprehensively. Some of the advanced applications of thermosets obtained by this methodology are also reviewed.

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“…Piezoelectric ceramic materials are routinely used to create micro (nano) electromechanical (M(N)EM) devices. [ 17 ] However, they require in situ high temperature processing which is incompatible with polymer platforms that are fabricated by high throughput processes such as nanoimprint [ 18 ] and injection moulding. [ 19 ]…”

Section: Introductionmentioning

confidence: 99%

Active Chiral Plasmonics: Flexoelectric Control of Nanoscale Chirality

Gilroy

McKay

Devine

et al. 2020

Advanced Photonics Research

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The ability to electrically control the optical properties of metamaterials is an essential capability required for technological innovation. The creation of dynamic electrically tunable metamaterials in the visible and near infrared regions is important for a range of imaging and fiber optic technologies. However, current approaches require complex nanofabrication processes which are incompatible for low‐cost device production. Herein, a novel simple approach is reported for electrical control of optical properties which uses a flexoelectric dielectric element to electromechanically manipulate the form factor of a chiral nanostructure. By altering the dimensions of the chiral nanostructure, the polarization properties of light are allowed to be electrically controlled. The flexoelectric element is part of a composite metafilm that is templated onto a nanostructured polymer substrate. As the flexoelectric element does not require in situ high temperature annealing, it can be readily combined with polymer‐based substrates produced by high throughput methods. This is not the case for piezoelectric elements, routinely used in microelectromechanical (MEM) devices which require high temperature processing. Consequently, combining amorphous flexoelectric dielectrics and low‐cost polymer‐based materials provides a route to the high throughput production of electrically responsive disposable metadevices.

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Nanoimprint lithography: Emergent materials and methods of actuation

Cited by 111 publications

References 122 publications

Nanomaterials for Biomedical Applications: Production, Characterisations, Recent Trends and Difficulties

Nanomaterials for Biomedical Applications: Production, Characterisations, Recent Trends and Difficulties

The Use of Click-Type Reactions in the Preparation of Thermosets

Active Chiral Plasmonics: Flexoelectric Control of Nanoscale Chirality

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