Results 51 to 60 of about 30,569 (272)

From Food to Power: Hydrogel Thermoelectrics for Ingestible Electronics

open access: yesAdvanced Functional Materials, EarlyView.
We introduce a fully edible thermoelectric–electrochromic platform that harvests heat from food and converts it into a visible color change. N‐type and p‐type hydrogel thermoelectric generators connected in series power anthocyanin‐based electrochromic displays, demonstrating the feasibility of safe, biodegradable, ingestible systems for on‐food ...
Antonia Georgopoulou   +3 more
wiley   +1 more source

Grayscale Photomasks Enable Noncontact Optical Patterning of Hydroxypropyl Cellulose Gels for Dynamic Art

open access: yesAdvanced Functional Materials, EarlyView.
Mask‐encoded UV exposure translates digital color information into pixel‐resolved structural‐color patterns in hydroxypropyl cellulose gels. Gaussian‐process‐guided calibration links UV processing conditions, wavelength, and mask opacity, enabling parallel fabrication of multicolor images in a single 10 s exposure.
Mengting Ye   +8 more
wiley   +1 more source

Determinação de zinco em solo utilizando colorimetria Determination of zinc in soil using colorimetry

open access: yesQuímica Nova, 2007
In terms of soil fertility, zinc is a micronutrient that is very important in the culture of soy, maize, rice and coffee, because it is a structural and functional component of a great number of enzymes.
Karina Fraige   +2 more
doaj   +1 more source

Nanoamphizymes: Self‐Assembled Amphiphilic Enzymatic Nanomaterials for High‐Performance Biocatalysis and Biosensing

open access: yesAdvanced Functional Materials, EarlyView.
An amphiphilic GOx nanoamphizyme was constructed by covalently introducing hydrophobic PPNI linkers onto GOx, enabling spontaneous self‐assembly into tunable nanoparticles. Mild crosslinking further stabilized the assemblies and enhanced catalytic performance and stability.
Yuan‐Hao Hsiao   +4 more
wiley   +1 more source

Multidimensional‐Encoded High‐Fidelity Spectrometers With a Floating‐Base Bipolar Junction

open access: yesAdvanced Functional Materials, EarlyView.
A floating‐base bipolar junction photodetector enables multidimensional spectral encoding through synergistic gate‐ and drain‐bias modulation of interfacial barrier matching. The resulting complementary spectral responses form a diverse, weakly correlated response matrix, enabling robust and high‐fidelity spectral reconstruction even at sub‐nanoampere ...
Sang‐Hyeon Lee   +11 more
wiley   +1 more source

Properties of thermally modified teakwood

open access: yesMaderas: Ciencia y Tecnología, 2021
Thermal modification is a treatment that seeks to improve the properties of wood and reduce the heterogeneity in its color. The objective of this work was to evaluate the effect of thermal treatment on the anatomical, chemical, physical, mechanical ...
Elaine Cristina Lengowski   +4 more
doaj  

Perylene Diimide-Based Fluorescent and Colorimetric Sensors for Environmental Detection

open access: yesSensors, 2020
Perylene tetracarboxylic diimide (PDI) and its derivatives exhibit excellent thermal, chemical and optical stability, strong electron affinity, strong visible-light absorption and unique fluorescence on/off features.
Shuai Chen   +4 more
doaj   +1 more source

Engineering Intraframework Energy Transfer in Metal‐Organic Frameworks for Luminescent Discrimination of Bisphenol Pollutants

open access: yesAdvanced Functional Materials, EarlyView.
A family of isostructural lanthanide metal–organic frameworks serves as a model platform to disentangle metal‐to‐metal and linker‐to‐linker energy transfer during luminescence sensing. The results reveal that rigid lanthanide energy migration governs sensing performance, whereas linker‐mediated pathways exert only minor effects, providing mechanistic ...
Zongsu Han   +4 more
wiley   +1 more source

Multispectral and Colorimetric Approaches for Non-Destructive Maturity Assessment of Specialty Arabica Coffee

open access: yesFoods
This study evaluated the integration of non-invasive remote sensing and colorimetry to classify the maturity stages of Coffea arabica fruits across four varieties: Caturra Amarillo, Excelencia, Milenio, and Típica.
Seily Cuchca Ramos   +7 more
doaj   +1 more source

Tooth Lightness Changes with Listerine Healthy White after Application of Tooth-Coloring-Inducing Foods

open access: yes치위생과학회지, 2023
Background: The purpose of this study is to investigate the tooth whitening effect of Listerine Healthy White and provide effective management of extrinsic discoloration by comparing the whitening effects of existing whitening products.Methods: The ...
Moon-Jin Jeong   +6 more
doaj   +1 more source

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