A5051698178- Photonic Crystals and Applications
- Liquid Crystal Research Advancements
- Advanced Optical Imaging Technologies
- Biocrusts and Microbial Ecology
- Microbial Community Ecology and Physiology
- Pickering emulsions and particle stabilization
- Microplastics and Plastic Pollution
- Advanced Polymer Synthesis and Characterization
- Slime Mold and Myxomycetes Research
- Cultural Heritage Materials Analysis
- Genomics and Phylogenetic Studies
- Nanocomposite Films for Food Packaging
- bioluminescence and chemiluminescence research
- Building materials and conservation
- Photochromic and Fluorescence Chemistry
- Fluid Dynamics and Thin Films
- CO2 Reduction Techniques and Catalysts
- Polysaccharides and Plant Cell Walls
- Advanced Thermoelectric Materials and Devices
- Various Chemistry Research Topics
- Additive Manufacturing and 3D Printing Technologies
- Nonlinear Optical Materials Studies
- Advanced Materials and Mechanics
- Plant Reproductive Biology
- 3D Printing in Biomedical Research
Johnson Matthey (United Kingdom)
2023-2025
Diamond Light Source
2023-2025
University of Cambridge
2019-2024
Google (United Kingdom)
2021
Wageningen University & Research
2016-2018
Abstract The transfer of chirality across length-scales is an intriguing and universal natural phenomenon. However, connecting the properties individual building blocks to emergent features their resulting large-scale structure remains a challenge. In this work, we investigate origins mesophase in cellulose nanocrystal suspensions, whose self-assembly into chiral photonic films has attracted significant interest. By correlating ensemble behaviour suspensions with quantitative morphological...
Hydroxypropyl cellulose (HPC) is a biocompatible derivative capable of self-assembling into lyotropic chiral nematic phase in aqueous solution. This liquid crystalline reflects right-handed circular polarized light specific color as function the HPC weight fraction. Here, it demonstrated that, by introducing crosslinking agent, possible to drastically alter visual appearance mesophase terms reflected color, scattering distribution, and polarization response, resulting an exceptional matte...
Abstract Additive manufacturing is becoming increasingly important as a flexible technique for wide range of products, with applications in the transportation, health, and food sectors. However, to develop additional functionality it simultaneously control structuring across multiple length scales. In 3D printing, this can be achieved by employing inks intrinsic hierarchical order. Liquid crystalline systems represent such class self‐organizing materials; however, date they are only used...
The structural coloration of arthropods often arises from helicoidal structures made primarily chitin. Although it is possible to achieve analogous architectures by exploiting the self-assembly chitin nanocrystals (ChNCs), date no evidence has been reported such structures. Previous studies are identified have constrained both experimental inability access sub-micrometer pitches and intrinsically low birefringence crystalline To expand range accessible pitches, here, ChNCs isolated two...
Abstract Biodegradable photonic microspheres with structural colors are promising substitutes to polluting microbeads and toxic dyes. Here, amphiphilic polyester‐ block ‐poly(ethylene glycol) bottlebrush copolymers (BBCPs) polylactic acid or poly(ϵ‐caprolactone) as the hydrophobic synthesized used fabricate eco‐friendly pigments. Molecular parameters of BBCPs, including rigidity symmetry, precisely tailored by variation side chain lengths, which enables effective manipulation interfacial...
When a dispersion droplet dries, rich variety of spatial and temporal heterogeneities emerge. Controlling these phenomena is essential for many applications yet requires thorough understanding the underlying mechanisms. Although process film formation from initially dispersed polymer particles well documented known to involve three main stages - evaporation, particle deformation coalescence it impossible fully disentangle effects coalescence, as are closely linked. We circumvent this problem...
An optical method to detect nanoscale damage makes unpredictable fracture predictable.
In situ microscopy involves imaging of samples under real reaction conditions. For electron microscopy, micro-electromechanical systems (MEMS) chips have previously been developed that can hold a liquid or gas inside the vacuum microscope, with electrical contacts allow for heating biasing sample. These paved way high-resolution dynamic chemical reactions. Here, we report use such MEMS in an in-house setup hard X-ray nanoprobe, applied to Ni-rich cathode materials. We investigate and...
Structural color is an optical phenomenon resulting from light interacting with nanostructured materials. Although structural (SC) widespread in the tree of life, underlying genetics and genomics are not well understood. Here, we collected sequenced a set 87 structurally colored bacterial isolates 30 related strains lacking SC. Optical analysis colonies indicated that diverse bacteria at least two different phyla (
To unlock the widespread use of block copolymers as photonic pigments, there is an urgent need to consider their environmental impact (cf. microplastic pollution). Here we show how inverse glass architecture can enable biocompatible bottlebrush (BBCPs), which otherwise lack refractive index contrast needed for a strong response. A library pigments produced from poly(norbornene-graft-polycaprolactone)-block-poly(norbornene-graft-polyethylene glycol), with color tuned via either BBCP molecular...
Vivid colours found in living organisms are often the result of scattering from hierarchical nanostructures, where interplay between order and disorder their packing defines visual appearance. In case Flavobacterium IR1, complex arrangement cells polycrystalline three-dimensional lattices is to be a distinctive fingerprint colony organization. By combining analytical analysis angle-resolved response vivo bacterial colonies with numerical modelling, we show that can assess inter-cell distance...
Studying chemical reactions in an environment that closely mimics the system's natural operating conditions can offer crucial insights into dynamic oxidation processes. Transmission Electron Microscopes (TEMs) and X-ray Nanoprobes allow use of imaging spectroscopy to access nanoscale structural information about these However, controlled constraints make design implementation situ sample environments challenging. Here, we outline setup liquid for Hard Nanoprobe beamline (I14) at Diamond...
The brightest colours in nature often originate from the interaction of light with materials structured at nanoscale. Different organisms produce such coloration a wide variety and architectures. In case bacterial colonies, structural stem for periodic organization cells within colony, while considerable efforts have been spent on elucidating mechanisms responsible coloration, biochemical processes determining development this effect not explored. Here, we study influence nutrients...
Disordered arrangement of wax platelets on<italic>Tradescantia</italic>leaves increase long wavelength reflectance, contrary to the commonly observed UV-protection mechanism.
The majority of plant colours are produced by anthocyanin and carotenoid pigments, but colouration obtained nanostructured materials (i.e. structural colours) is increasingly reported in plants. Here, we identify a multilayer photonic structure the fruits Lantana strigocamara compare it with similar Viburnum tinus fruits. We used combination transmission electron microscopy (EM), serial EM tomography, scanning force optical simulations to characterise L. strigocamara. also examine...
Abstract Biodegradable photonic microspheres with structural colors are promising substitutes to polluting microbeads and toxic dyes. Here, amphiphilic polyester‐ block ‐poly(ethylene glycol) bottlebrush copolymers (BBCPs) polylactic acid or poly(ϵ‐caprolactone) as the hydrophobic synthesized used fabricate eco‐friendly pigments. Molecular parameters of BBCPs, including rigidity symmetry, precisely tailored by variation side chain lengths, which enables effective manipulation interfacial...
Christian Kuttner opened a general discussion of the paper by Pete Vukusic: You have pointed out differences between ordered, quasi-ordered and disordered systems. But how does this relate to short- long-range order? For example, some densely packed arrangements may very unifor
Het drooggedrag van watergedragen verven wordt in grote mate bepaald door de vervormbaarheid microscopisch kleine deeltjes waaruit ze bestaan. Om het effect deze op droogproces een suspensie druppel te testen, synthetiseren wij gecrosslinkte rubber nanodeeltjes water. De crosslinker voorkomt samenvloeiing deeltjes. fenomenen die we observeren bij drogen zo’n druppeltje, invasie lucht, capillaire deformatie, rimpelingen en breukvorming, blijken veranderen rond algemene transitiewaarde voor...
Christian Kuttner opened a discussion of the paper by Maria Helena Godinho: How do you quantify order, I suppose use NMR? Also, mentioned an order parameter to describe degree in layered structures – but this is defined for 3D ordered systems. Could