Uéslen Rocha
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View article: (Invited) Influence of Nd<sup>3</sup>⁺ Doping and Thermal Annealing on Luminescent Properties and Thermal Sensing of Na₂Ti₆O₁₃ Nanocrystals
(Invited) Influence of Nd<sup>3</sup>⁺ Doping and Thermal Annealing on Luminescent Properties and Thermal Sensing of Na₂Ti₆O₁₃ Nanocrystals Open
This study investigates the effects of Nd 3 ⁺ doping and thermal annealing (at 250, 500, 650, and 800 °C) on the structural and luminescent properties of Nd 3 ⁺‐doped Na₂Ti₆O₁₃ nanocrystals (NCs), with a focus on their potential for therma…
View article: Temporal trends in microplastic accumulation in placentas from pregnancies in Hawaiʻi
Temporal trends in microplastic accumulation in placentas from pregnancies in Hawaiʻi Open
Microplastics are created for commercial use, are shed from textiles, or result from the breakdown of larger plastic items. Recent reports have shown that microplastics accumulate in human tissues and may have adverse health consequences. …
View article: COVID-19 Infection Changes the Functions and Morphology of Erythrocytes: A Multidisciplinary Study
COVID-19 Infection Changes the Functions and Morphology of Erythrocytes: A Multidisciplinary Study Open
Hematological problems are associated with Coronavirus disease 2019 (COVID-19). Respiratory impairment is the higher point studied, although without experimental studies related to the oxygen transport performed by erythrocytes. Therefore,…
View article: 3D‐Printed Acoustofluidic Devices for Raman Spectroscopy of Cells
3D‐Printed Acoustofluidic Devices for Raman Spectroscopy of Cells Open
Acoustofluidics leads to innovative methods for cellular levitation that can help Raman biospectroscopy avoid spurious substrate signals while keeping cells alive within a controlled microenvironment. In article number 2100552, Harrisson D…
View article: Bioconjugation Between CdTe Quantum Dots and a Cationic Protein: An Analytical Method to Determine Protamine in Drug and Urine Samples
Bioconjugation Between CdTe Quantum Dots and a Cationic Protein: An Analytical Method to Determine Protamine in Drug and Urine Samples Open
CdTe quantum dots (QD-CdTe) functionalized with mercaptosuccinic acid (MSA) were synthesized in an aqueous medium, varying synthesis time from 0.5 to 4 h. The nanoprobe were characterized by a direct relationship between synthesis time and…
View article: Raman-acoustofluidic integrated system for single-cell analysis
Raman-acoustofluidic integrated system for single-cell analysis Open
Confocal Raman microscopy offers a particular pathway for monitoring chemical "fingerprints" of intracellular components like the cell membrane, organelles, and nucleus. Nevertheless, conventional Raman acquisitions of fixed or randomly di…
View article: Optomagnetic Nanoplatforms for In Situ Controlled Hyperthermia
Optomagnetic Nanoplatforms for In Situ Controlled Hyperthermia Open
Magnetic nanoparticles (M:NPs) are unique agents for in vivo thermal therapies due to their multimodal capacity for efficient heat generation under optical and/or magnetic excitation. Nevertheless, their transfer from laboratory to the cli…
View article: Core–shell rare-earth-doped nanostructures in biomedicine
Core–shell rare-earth-doped nanostructures in biomedicine Open
The current status of the use of core–shell rare-earth-doped nanoparticles in biomedical applications is reviewed highlighting the most relevant advances.
View article: Magnetic upconverting fluorescent NaGdF4:Ln3+ and iron-oxide@NaGdF4:Ln3+ nanoparticles
Magnetic upconverting fluorescent NaGdF4:Ln3+ and iron-oxide@NaGdF4:Ln3+ nanoparticles Open
Microwave assisted solvothermal method has been employed to synthesize multifunctional upconverting β-NaGdF4:Ln3+ and magnetic-upconverting Fe3O4/γ-Fe2O3@NaGdF4:Ln3+ (Ln = Yb and Er) nanoparticles. The powder x-ray diffraction data confirm…
View article: Nanopartículas multifuncionais de fluoreto de lantânio dopadas com Nd3+ como agentes de contrastes e terapêuticos
Nanopartículas multifuncionais de fluoreto de lantânio dopadas com Nd3+ como agentes de contrastes e terapêuticos Open
In this work, we investigated the possible applications of Nd3+ ions doped lanthanium trifluoride (LaF3) nanocrystals as infrared constrast agents in the first and second biological windows of the electromagnetic spectrum, which extend fro…
View article: LaF3 core/shell nanoparticles for subcutaneous heating and thermal sensing in the second biological-window
LaF3 core/shell nanoparticles for subcutaneous heating and thermal sensing in the second biological-window Open
We report on Ytterbium and Neodymium codoped LaF3 core/shell nanoparticles capable of simultaneous heating and thermal sensing under single beam infrared laser excitation. Efficient light-to-heat conversion is produced at the Neodymium hig…
View article: Optical lattice-like cladding waveguides by direct laser writing: fabrication, luminescence, and lasing
Optical lattice-like cladding waveguides by direct laser writing: fabrication, luminescence, and lasing Open
We report on the fabrication of optical lattice-like waveguide structures in an Nd:YAP laser crystal by using direct femtosecond laser writing. With periodically arrayed laser-induced tracks, the waveguiding cores can be located in either …
View article: Correction: Self-monitored photothermal nanoparticles based on core–shell engineering
Correction: Self-monitored photothermal nanoparticles based on core–shell engineering Open
Correction for 'Self-monitored photothermal nanoparticles based on core-shell engineering' by Erving C. Ximendes et al., Nanoscale, 2016, 8, 3057-3066.
View article: Neodymium-doped nanoparticles for infrared fluorescence bioimaging: The role of the host
Neodymium-doped nanoparticles for infrared fluorescence bioimaging: The role of the host Open
The spectroscopic properties of different infrared-emitting neodymium-doped nanoparticles (LaF3:Nd3+, SrF2:Nd3+, NaGdF4: Nd3+, NaYF4: Nd3+, KYF4: Nd3+, GdVO4: Nd3+, and Nd:YAG) have been systematically analyzed. A comparison of the spectra…