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We experimentally demonstrate spectral broadening and shaping of exponentially-decaying nanosecond pulses via nonlinear mixing with a phase-modulated pump in a periodically-poled lithium niobate (PPLN) waveguide. A strong, 1550~nm pulse is…

Optics · Physics 2015-06-22 Imad Agha , Serkan Ates , Luca Sapienza , Kartik Srinivasan

In this work the physicochemical characterization of liposomes loaded with a newly synthesised carboranyl porphyrazine (H2HECASPz) is described. This molecule represents a potential drug for different anticancer therapies, such as Boron…

One of the major limitations of nanomedicine is the scarce penetration of nanoparticles in tumoral tissues. These constrains have been tried to be solved by different strategies, such as the employ of polyethyleneglycol (PEG) to avoid the…

Quantitative Methods · Quantitative Biology 2021-02-11 Victor M. Moreno , Alejandro Baeza , Maria Vallet-Regi

Optical properties and morphology of laser generated Aluminum and Copper phthalocyanine nanoparticles (nAlPc and nCuPc) in water are experimentally studied. Near infrared laser source of nanosecond pulse duration was used for fragmentation…

General Physics · Physics 2019-04-12 I. I. Rakov , S. M. Pridvorova , G. A. Shafeev

Poly-dl-lactic acid (PDLLA) was blended with type I collagen to attempt to overcome the instantaneous gelation of electrospun collagen scaffolds in biological environments. Scaffolds based on blends of type I collagen and PDLLA were…

Biological Physics · Physics 2015-10-01 Xiangchen Qiao , Stephen J. Russell , Xuebin Yang , Giuseppe Tronci , David J. Wood

Microscale hydrogels comprised of macromolecular networks have increasingly been used for applications involving cell encapsulation, tissue engineering and for the storage and release of active cargo molecules. However, the majority of such…

Biological Physics · Physics 2025-01-07 Ngoc-Duy Dinh , Marc Rodriguez-Garcia , Zenon Toprakcioglu , Yi Shen , Tuomas Knowles

Rhodamine B is a synthetic dye used for coloring textiles, paper and ceramics. In addition, Rhodamine B is also often used for coloring ingredients in food ingredients such as crackers, syrups, candy, cakes, and is often used for coloring…

Accumulation of plastic waste is a major environmental problem. Enzymes, particularly esterases, play an important role in the biodegradation of polyesters. These enzymes are usually only active on aliphatic polyesters, but a few have…

Biomolecules · Quantitative Biology 2019-04-01 Beatriz C. Almeida , Pedro Figueiredo , Alexandra T. P. Carvalho

We use molecular dynamics simulations to study a semidilute, unentangled polymer solution containing well dispersed, weakly attractive nanoparticles (NP) of size ($\sigma_N$) smaller than the polymer radius of gyration $R_g$. We find that…

Soft Condensed Matter · Physics 2018-09-18 Valerio Sorichetti , Virginie Hugouvieux , Walter Kob

The discovery of colossal barocaloric effects in neopentyl glycol (NPG) makes plastic crystals promising candidates for solid-state refrigerants with lower environmental impact than vapour compression fluids. Optimising operational…

Polyynes are linear carbon chains characterized by alternated single and triple bonds and terminated by hydrogen or other terminal substituents. They can be synthesized by pulsed laser ablation in liquid (PLAL) as a scalable,…

Micro- and nanogels are widely used to stabilise emulsions and simultaneously implement their responsiveness to the external stimuli. One of the factors that improves the emulsion stability is the nanogel softness. Here, we study how the…

Soft Condensed Matter · Physics 2023-02-08 Alexander V. Petrunin , Steffen Bochenek , Walter Richtering , Andrea Scotti

In this work, the preparation of nanocomposites based on poly(L-lactide) PLLA and graphite nanoplatelets (GNP) was assessed, by applying, for the first time, the reactive extrusion (REX) polymerization approach, which is considered a low…

Applied Physics · Physics 2019-10-31 Alberto Fina , Samuele Colonna , Lorenza Maddalena , Mauro Tortello , Orietta Monticelli

There is a crucial need for effective and easily dispersible colloidal microsensors able to detect local pH changes before irreversible damages caused by demineralization, corrosion, or biofilms occur. One class of such microsensors is…

Applied Physics · Physics 2024-09-05 C. A. S. Burel , A. Teolis , A. Alsayed , C. B. Murray , B. Donnio , R. Dreyfus

We investigate the reliability of simulations of polyelectrolyte systems in aqueous environments, simulations that are performed using an efficient multi scale coarse grained polarizable pseudo-particle particle approach, denoted as pppl,…

Soft Condensed Matter · Physics 2024-01-01 Michel Masella , Fabien Léonforté

Mechanisms regulating the escape of Ly$\alpha$ photons and ionizing radiation remain poorly understood. To study these processes we analyze VLA 21cm observations of one Green Pea (GP), J160810+352809 (hereafter J1608), and HST COS spectra…

Astrophysics of Galaxies · Physics 2019-03-27 Jed H. McKinney , Anne E. Jaskot , M. S. Oey , Min S. Yun , Tara Dowd , James D. Lowenthal

We report on performance results achieved for recently produced LAPPDs - largest comercially available planar geometry photodetectors based on microchannel plates. These results include electron gains of up to $10^{7}$, low dark noise rates…

Optically levitated nanomechanical resonators in vacuum perform ultrahigh sensitivity for mechanical quantities by overcoming the limitations of clamped resonators. However, the generally levitated silica nanoparticles (NPs) with low…

Acoustics offers rich possibilities for characterising and monitoring the biopolymer structures being employed in the field of biomedical engineering. Here we explore the rudimentary acoustic properties of two common biodegradable polymers…

Materials Science · Physics 2010-10-29 N G Parker , M L Mather , S P Morgan , M JW Povey

Upconverting nanoparticles (UCNPs) are promising optical biomechanical force sensors due to their near infrared excitation, low toxicity, photostability, and linear colorimetric sensitivity to micronewtons of force. Recently, a composite…

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