B. Hopp
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View article: A comparative study of femtosecond pulsed and continuous wave lasers on physiological responses through activation of phytochromes in seeds
A comparative study of femtosecond pulsed and continuous wave lasers on physiological responses through activation of phytochromes in seeds Open
Red light activates phytochrome photoreceptors, which mediate such key developmental steps as germination and seedling photomorphogenesis in Arabidopsis thaliana. To examine the details of these responses, we developed a novel experimental…
View article: Laser ablation as a tool for fragmentation of active pharmaceutical ingredient particles: overview
Laser ablation as a tool for fragmentation of active pharmaceutical ingredient particles: overview Open
Poor water solubility affects approximately 40% of marketed drugs and 90% of those in development, limiting bioavailability and posing challenges for the pharmaceutical industry. Reducing particle size enhances solubility and bioavailabili…
View article: The Effect of Halide Composition on the Luminescent Properties of Ternary Cesium–Copper Halide Pseudo‐Perovskite Films
The Effect of Halide Composition on the Luminescent Properties of Ternary Cesium–Copper Halide Pseudo‐Perovskite Films Open
Ternary copper halide pseudo‐perovskites are in the forefront of research as potential active materials in light emission applications. The optoelectronic properties of these compounds can be fine‐tuned by the preparation of mixed‐halide c…
View article: Investigation of Photocatalytic PVDF Membranes Containing Inorganic Nanoparticles for Model Dairy Wastewater Treatment
Investigation of Photocatalytic PVDF Membranes Containing Inorganic Nanoparticles for Model Dairy Wastewater Treatment Open
Membrane separation processes are promising methods for wastewater treatment. Membrane fouling limits their wider use; however, this may be mitigated using photocatalytic composite materials for membrane preparation. This study aimed to in…
View article: A comparative study of femtosecond pulsed laser ablation of meloxicam in distilled water and in air
A comparative study of femtosecond pulsed laser ablation of meloxicam in distilled water and in air Open
The increasing prevalence of water insoluble or poorly soluble drugs calls for the development of new formulation methods. Common approaches include the reduction of particle size and degree of crystallinity. Pulsed laser ablation is a cle…
View article: A comparative study of femtosecond pulsed laser ablation of meloxicam in distilled water and in air
A comparative study of femtosecond pulsed laser ablation of meloxicam in distilled water and in air Open
The increasing prevalence of water insoluble or poorly soluble drugs calls for the development of new formulation methods. Common approaches include the reduction of particle size and degree of crystallinity. Pulsed laser ablation is a che…
View article: Anti-counterfeiting protection, personalized medicines − Development of 2D identification methods using laser technology
Anti-counterfeiting protection, personalized medicines − Development of 2D identification methods using laser technology Open
Counterfeiting of the products for healing is as old as trading, and it is difficult to quantify the magnitude of the problem. It is known that substandard and/or falsified (SF) medicines are a growing global threat to health, and they cau…
View article: Production of ibuprofen-magnetite nanocomposites by pulsed laser ablation
Production of ibuprofen-magnetite nanocomposites by pulsed laser ablation Open
We investigated the application of pulsed laser ablation (PLA) for the production of magnetic nanoparticles (MNPs)/drug nanocomposites. Magnetic drug delivery vehicles can provide a multifunctional theranostic platform and allow for a comb…
View article: Fabrication of Submicrometer-Sized Meloxicam Particles Using Femtosecond Laser Ablation in Gas and Liquid Environments
Fabrication of Submicrometer-Sized Meloxicam Particles Using Femtosecond Laser Ablation in Gas and Liquid Environments Open
In pharmaceutical development, more and more drugs are classified as poorly water-soluble or insoluble. Particle size reduction is a common way to fight this trend by improving dissolution rate, transport characteristics and bioavailabilit…
View article: Characterization of plasma reflectivity response of optical glasses processed by 34 fs pulses: analysis in the context of ablation parameters
Characterization of plasma reflectivity response of optical glasses processed by 34 fs pulses: analysis in the context of ablation parameters Open
One of the methods successfully applied for the improvement of the temporal contrast of ultrashort, high-intensity pulses is the plasma mirror (PM) technique [1].An advantage of this approach is that it can effectively be utilized in the e…
View article: Classification of minerals and the assessment of lithium and beryllium content in granitoid rocks by laser-induced breakdown spectroscopy
Classification of minerals and the assessment of lithium and beryllium content in granitoid rocks by laser-induced breakdown spectroscopy Open
LIBS analysis is efficient in the classification of mineral grains and the prospecting of Be and Li in granitoid rocks.
View article: Processing of optical glasses by single, 34 fs pulses in the strong field ionization domain: ablation characteristics and crater morphology
Processing of optical glasses by single, 34 fs pulses in the strong field ionization domain: ablation characteristics and crater morphology Open
The material response of Borofloat, BK7, and B270 glass targets to 34 fs pulses of 800 nm central wavelength is analyzed in the 1–30 J/cm 2 fluence domain. The contours of the craters change with the fluence very much the same for all thre…
View article: Wetting and evaporation on a carbon cloth type gas diffusion layer for passive direct alcohol fuel cells
Wetting and evaporation on a carbon cloth type gas diffusion layer for passive direct alcohol fuel cells Open
Gas diffusion layers (GDL) have a crucial importance in passive air breathing direct alcohol fuel cells as they play a pivotal role in governing fuel distribution on the anode side and in preventing water flooding on the cathode side. We r…
View article: Age‐Related Absorption of the Human Lens in the Near‐Ultraviolet Range
Age‐Related Absorption of the Human Lens in the Near‐Ultraviolet Range Open
The purpose of the present study was to determine the age dependence of the ultraviolet (UV) absorption of the different parts of the human crystalline lens. Cryostat sections of human cadaveric lenses (60 μm) were cut. The UV absorbance o…
View article: Time integrated transient reflectivity versus ablation characteristics of Borofloat, BK7, and B270 optical glasses ablated by 34 fs pulses
Time integrated transient reflectivity versus ablation characteristics of Borofloat, BK7, and B270 optical glasses ablated by 34 fs pulses Open
Ablation and plasma mirror characteristics of Borofloat, BK7, and B270 glasses processed with 34 fs pulses of 800 nm central wavelength are compared in the 10 14 –10 15 W/cm 2 intensity domain. With thresholds of 1.7-1.9 × 10 14 W/cm 2 , h…
View article: Single-shot surface ablation and transient reflectivity changes of optical glasses induced by 34 fs laser pulses
Single-shot surface ablation and transient reflectivity changes of optical glasses induced by 34 fs laser pulses Open
Results of a comparative study on single-shot surface ablation of commercial optical glasses together with the transient reflectivity enhancement during the process are reported. Three types of optical glasses: Schott's BOROFLOAT®, BK7 and…
View article: Homogenization with coherent light illuminated beam shaping diffusers for vision applications: spatial resolution limited by speckle pattern
Homogenization with coherent light illuminated beam shaping diffusers for vision applications: spatial resolution limited by speckle pattern Open
Background Homogenizing properties of beam shaping diffusers illuminated with coherent laser light was studied with special regard on their use in vision applications. Experimental Two diffusers projecting circular pattern at different sca…