Edge Precision Manufacturing’s Post

Optical properties are a key concerns for many of our customers. We routinely do very detailed spectral analysis, such as that shown below, on materials both before and after our thermoforming process to ensure full understanding of transmissivity and background fluorescence at key wavelengths. Whether looking at fluorescence signals in the visible wavelength range (such as fluorescein at 518 nm or rhodamine at 580 nm) or molecular adsorption (such as individual amino acids below 300 nm or full proteins in the range of 3-10 microns), optical clarity of molded plastics is essential to achieving high signal-to-noise ratio. Discover how Edge can enhance your optical applications with precise material selection and process optimization: https://lnkd.in/eggtMm9u #optics #manufacutring #fluorescence #engineering #cellandgenetherapy

Our very recent publication on Advanced Materials designing a novel kind of polymeric form stable phase change materials via simple mixing ultra-high molecular weight of PEO and its oligomers. It is a application of our previous PNAS theorical work. Our new designed PCMs could exhibit ultra-high melting enthalpy up to 185 J/g which is higher than any other PEG based form stable PCMs reported in literatures. The form stable structrue was achieved by the ultra-long terminal relaxation time of UHMWPEO with molecular weight higher than 7 million g/mol due to the large number of entanglements per chain.

The study explores polymer entanglements, crucial for material toughness, by using supramolecular templates to precisely control their topology. By utilizing phenanthroline-copper(I) complexes, entanglements were installed into elastomers, resulting in reduced swelling and increased modulus. Even with minimal template usage, significant improvements were observed. Additionally, the formation of fluorescent exciplexes suggests a potential method for detecting and quantifying supramolecular templated entanglements in the future. Read more details: https://lnkd.in/dUG66tT8 #polymerscience

Read about our recent research and study developed together with the National Physical Laboratory (NPL) UK for the volume fraction determination of fibre-reinforced #polymer composites. The innovative microwave protocol ensures a selective #digestion of polymer matrix without attacking the reinforcing fibre or left regions of undigested polymer. The protocol was performed with ETHOS UP with the aim to develop a fast and easy-to-apply protocol for routine high throughput analysis, based on nitric acid only. #newdigestionmethod #microwavedigestion #ethosup #fiberfractiondetermination

Ultraviolet–visible Spectroscopy Ultraviolet (UV): spectroscopy or ultraviolet–visible (UV–VIS) spectrophotometry refers to absorption spectroscopy or reflectance spectroscopy in part of the ultraviolet and the full, adjacent visible regions of the electromagnetic spectrum.Being relatively inexpensive and easily implemented, this methodology is widely used in diverse applied and fundamental applications. The only requirement is that the sample absorb in the UV-Vis region, i.e. be a chromophore. Absorption spectroscopy is complementary to fluorescence spectroscopy. Parameters of interest, besides the wavelength of measurement, are absorbance (A) or transmittance (%T) or reflectance (%R), and its change with time. Absorbance : A=Ebc Spectrophotometer: A UV-vis spectrophotometer is an analytical instrument that measures the amount of ultraviolet (UV) and visible light that is absorbed by a sample. It is a widely used technique in chemistry, biochemistry, and other fields, to identify and quantify compounds in a variety of samples. UV-vis spectrophotometers work by passing a beam of light through the sample and measuring the amount of light that is absorbed at each wavelength. The amount of light absorbed is proportional to the concentration of the absorbing compound in the sample. #Optical_transitions #Applications #Ultraviolet_visible_spectrophotometer #Microspectrophotometry

📢#Article Highly-Cited Paper Red-Emitting Polymerizable Guanidinium Dyes as Fluorescent Probes in Molecularly Imprinted Polymers for Glyphosate Detection by Martha Kimani, et al. 👉https://lnkd.in/ehYxgfSz MDPI Bundesanstalt für Materialforschung und -prüfung #glyphosate #guanidiniumreceptors #fluorescentprobes #molecularlyimprintedpolymers #coreshellparticles This article belongs to the Special Issue Advances in the Manufacture of Sensors Based on Molecularly Imprinted Polymers https://lnkd.in/dStxXJt

The Influence of Different #Solvents on the Physical Properties of ZnO Thin Films by Alejandra López-Suárez and Dwight R. Acosta J. Compos. Sci. 2024, 8(8), 332; https://lnkd.in/dpTED26n Abstract Polycrystalline zinc oxide (ZnO) thin films were deposited on soda-lime glass substrates using the chemical spray pyrolysis method at three different substrate temperatures: 400, 450, and 500 °C. The solvents used in the precursor solution consisted of either ethanol or methanol. The effects of these solvents on the compositional, structural, morphological, electrical, and optical properties were studied with different techniques, including Rutherford Backscattering Spectrometry (RBS), X-ray diffraction (XRD), Scanning Electron Microscopy (SEM), four-point method, and Ultraviolet and Visible Spectroscopy (Uv-Vis). The results show that both temperature and the type of solvent modify the properties of the materials. An essential outcome of the study was that at 500 °C, the ZnO thin films prepared with either ethanol or methanol exhibited almost the same high-quality crystallinity, stoichiometry, average crystallite size, energy band gap, and resistivity. These findings contribute to our understanding of the properties of these materials and their potential applications. Keywords: #zinc #oxide; #chemical spray #pyrolysis; #ethanol; #methanol; physical properties

The Interdigitated Microsensor Electrode (IME) or Interdigitated Microelectrode Array (IDA), such as those designed, developed, and commercialized by Abtech Scientific Inc., is a highly versatile interrogation platform for the realization of electrochemical, particularly impedimetric, chemical and biological sensors for near patient diagnostics, electronic NOSES, and electronic TONGUES. The IME/IDA is also used for the impedimetric characterization of the time-temperature dynamics of polymers and organic glasses that are deposited onto the device. Our two recently published papers highlight this versatility. The first reports on the development and application of chemistries and protocols for the specific (covalent) immobilization of bioactive #hydrogels onto the multi-material device surface, the characterization of the adhesive strength at each step in the protocol, and the application of impedimetry for studying the swelling dynamics of the hydrogel. The second reports on the dielectric transition behavior of the CVD glass, methyl-m-toluate, and introduces the RTGE (Richert Tracy Guiseppi-Elie Ediger) equation that rationalizes the apparent permittivity as the glass is deposited at different IME/IDA substrate temperatures and grows in the z-axis. #biosensors #arrays #glasses #enose #etongue #impedance https://lnkd.in/ewuKHpXk https://lnkd.in/e5YENM6K

ETHOXY PILLAR ARENES Ethoxy pillar arenes exhibit some unique chemistry due to their structure and functional groups. Here are a few key aspects: 1. Host-Guest Chemistry: The pillar arene structure creates a rigid, cylindrical cavity that can selectively encapsulate guest molecules. The ethoxy groups can influence the size and shape of this cavity, affecting the types of guests that can be accommodated. 2. Self-Assembling Properties: Ethoxy pillar arenes can self-assemble into organized structures in solution or on surfaces, driven by non-covalent interactions such as hydrogen bonding and π-π stacking. This property is useful for creating materials with specific properties. 3. Functionalization: The ethoxy groups can be used to modify the pillar arenes' solubility, reactivity, and interaction with other molecules. For example, the presence of ethoxy groups can alter the electronic environment within the cavity, influencing how the pillar arene interacts with guest molecules. 4. Optical Properties: Ethoxy groups can affect the electronic and optical properties of pillar arenes. This includes changes in fluorescence, absorbance, or emission characteristics, which can be exploited in sensing and imaging applications. 5. Thermal and Chemical Stability: The ethoxy groups contribute to the overall stability of the pillar arene structure, influencing its behavior under different thermal and chemical conditions. These peculiarities make ethoxy pillar arenes versatile and valuable in various applications, from material science to drug delivery.

Happy to share our latest work: ‘’Silver nanoparticles from orange peel extract: colorimetric detection of Pb2+ and Cd2+ ions with a chemometric approach’’ a collaboration between our research group of Università di Camerino( Rita Giovannetti and SARA PIRAS) and the collegues of Università degli Studi di Pavia : Lisa Rita Magnaghi and Raffaela Biesuz. In this paper we report the green synthesis, in alkaline condition, of silver nanoparticles (AgNPs@OPE), obtained using orange peel water extract (OPE), that act as reducing and capping agent. The procedure permits the valorisation of a waste as orange peel, and lowers the environmental impact of the process. The AgNPs@OPE were deeply characterized by UV–Vis spectroscopy, FT-IR, SEM analysis and DLS analysis and successively used as colorimetric sensors for different metals in aqueous solution. The colourimetric assay showed that AgNPs@OPE were able to detect Pb2+ and Cd2+; the UV-Vis spectral modification resulted in a colour change, from pristine nanoparticles’ yellow to brown, due to the aggregation process. For the quantification of each of the two target cations, a calibration was performed by using the univariate linear regression, within the linearity ranges, exploiting the absorbance ratio between the main SPR band and the new band relative to the aggregate formation. Then a multivariate approach was followed to perform both Cd2+ and Pb2+ quantification by means of Partial Least Square regression (PLS) and target cations distinction by Linear Discriminant Analysis (LDA) applied on Principal Components Analysis (PCA) outputs. Finally, the ability to quantify and distinguish between Cd2+ and Pb2+ was tested in tap water samples spiked with the two cations in order to confirm the application of the AgNPs@OPE as selective sensor in real samples. #colorimetricsensor #silvernanoparticles #wastevalorisation #nanomaterials #chemometrics https://lnkd.in/dNk37iGf