Laser-based few-cycle terahertz (THz) radiation sources have seen significant advancements in the past 20 years, driven by major progress in intense femtosecond laser sources. More recently, scientists have developed several critical technologies to generate intense THz pulses, leading to a new field of nonlinear THz spectroscopy. In this talk, I will review recent advancements in the...
The localized plasmon resonance enables effective input of energy into metal nanoparticles by light irradiation. Using ultrashort laser pulses leads to the generation of a hot electron gas, the dynamics of which results in diverse phenomena: transient ultrafast modulation of the optical absorption and near-field, multiphoton emission of electrons and broadband light, and a strong localized...
Mechanics enabled by photon absorption generates work from materials and is perhaps one of the most important applications of light active matter, which mediates an intensity-to-stress transduction and moves in intensity gradients. Photomechanics can be put at work in surface structuring of materials, which has applications in several areas of science and engineering including photonics and...
Africa is rich with natural resources that serve as feedstocks for new materials and products with commercial value. The continent also grapples with waste from various industries that could be transformed into valuable products. The presentation will highlight opportunities that exist for these products in selected industry sectors including agriculture, mining, wastewater treatment and...
Biopolymers originate from renewable resources such as plant oils and agro-industrial waste. Due to the environmental concerns and sustainability issues around petroleum-based polymers, biopolymers are viewed as the wave of the future. When incinerated or degraded naturally, oil-based polymers release the greenhouse gas CO2, thus contributing to global warming. Biopolymers are considered...
HUDA USMAN [1], TAGBO H.R. NIEPA [1,2]
[1] Carnegie Mellon University (Chemical Engineering Department, Pittsburgh, United States)
[2] Carnegie Mellon University (Biomedical Engineering Department, Pittsburgh, United States)
Corresponding author: Tagbo H.R. Niepa. tniepa@andrew.cmu.edu
Keywords: PDMS, magnetic nanoparticles, in situ cultivation, magnetic microbial cultures,...
The advent of large language models and data-intensive AI algorithms has only intensified the already exponential demand for data. Seagate Technology is a mass capacity data storage provider, researching and manufacturing hard disk drive (HDD) technologies to store greater amounts of data cheaper and more sustainably. Novel technologies such as Heat Assisted Magnetic Recording (HAMR) require...
One of the key advances in nanoscience and nanotechnology has been our increasing ability to reach the limits of atomically precise structures. By having developed the โeyesโ to see, to record spectra, and to measure function at the nanoscale, we have been able to fabricate structures with precision as well as to understand the important and intrinsic heterogeneity of function found in these...
The application of supramolecular chemistry principles to the assembly of active layers for devices is challenging because molecule-substrate interactions are added to the molecule-molecule interactions present in solution. In this talk I shall illustrate what this implies for building an ordered array of fluorescent molecules at a specific distance from each other, while preserving their...
Colloidal inorganic nanocrystals (NCs), typically ranging from 2 to 20 nm in size, exhibit remarkable properties such as quantum confined exciton emission and localized surface plasmon resonance, which can be tuned by altering the NC's size, shape, and electron density. These NCs can be assembled into percolating networks with collective properties dependent on their structure and particle...
Civilisation and industrial evolution across the globe have led to the cumulative release of harmful and hazardous pollutants to the environs and water bodies. Industrial and domestic effluents including heavy metal ions and organic molecules pose severe health challenges with grave economic implications. This study searches for lasting solution via the development of nano-clay filters from...
Renewable energy presents an attractive alternative to fossil fuels due to its availability and eco-friendliness. Proton-exchange membrane fuel cells (PEMFCs), a key renewable energy technology, utilize hydrogen to produce electricity. In PEMFCs, an ion-conducting polymer (ionomer) serves both as a solid electrolyte separator and as a catalyst binder in electrodes. While the separator layer is...
Consecutive photoinduced electron transfer (ConPET) is a concept that Kรถnig and his group introduced in 2014 to provide a solution to the high energy demanding (rate limiting) reactions in single electron transfer (SET). This work and conceptually related studies with rhodamine 6G, eosin y, and acridine have been employed for the photoreduction of aryl halides, activation of aryl bromides,...
Abstract: Towards the development of cost-effective and scalable techniques of metal oxide nanoparticles synthesis. Despite being known as a scalable method, the solvothermal technology has recently been shown to be economically unfeasible. The mechanochemical process has recently been identified as a more cost-effective and ecologically friendly alternative to the solvothermal method. Zinc...
Co- doped TiO2 nanoparticles with vanadium and tungsten have been synthesized via sol-gel method for organic waste water photoactivity. The samples were characterized by UV-Vis diffraction reflectance absorption spectra (DRS), X-ray diffraction (XRD), scanning electron microscopy (SEM) equipped with energy-dispersive spectroscopy (EDS), and BrunnerโEmmetโTeller (BET) measurements. From the...
NUMERICAL MODELLING AND EXPERIMENTS OF POLYMER ENHANCED NANOPORE SENSING FOR MATERIAL CHARACTERIZATION
Eugene Gyasi Agyemang1, Gayathri Mohanan2,3,#, Chalmers Chau2,3, Martin Andrew Edwards1, Paolo Actis2,3,
1 University of Arkansas (Department of Chemistry and Biochemistry, Fayetteville, USA)
2 University of Leeds (School of Electronic and Electrical Eng. and Pollard Institute, Leeds,...
Coherent X-ray imaging and lensless microscopy have revolutionized our ability to explore the nanoworld, providing unprecedented insights into the structure and dynamics of materials at atomic and molecular scales. In this talk, I will present cutting-edge X-ray techniques, including Bragg Coherent Diffractive Imaging (BCDI), Bragg Ptychography, nanotomography, and advanced spectroscopic...
Nanostructured carbons constitute a large family of carbon allotropes with unique properties. This includes carbon nanotubes, carbon dots, graphene, onion-like carbons, hollow/carbon spheres etc. and are used in a wide range of applications such as energy, health, and water systems. While the production of structured nanocarbons is well documented in literature, the development of techniques...
YULAN CHEN1 and AMAL EL-GHAZALY2
1Materials Science and Engineering, Cornell University, Ithaca, New York, USA
2Electrical and Computer Engineering, Cornell University, Ithaca, New York, USA
Corresponding author: Amal El-Ghazaly (ase63@cornell.edu)
Keywords: magnetic nanoparticles, nanochains, self-assembly
Theme: Nanotechnology
The ideal single domain, isolated magnetic nanoparticle...
High resolution imaging on CaF$_{2}$ (111) surface with Non-contact atomic force microscopy
B. KYEYUNE$^{1\#}$, R. OLBRICH$^1$, M. REICHLING$^1$, P. RAHE$^1$
$1$ Institut fรผr Physik, Universitรคt Osnabrรผck, Barbarastraรe 7, 49076 Osnabrรผck, Germany
$\#$ bob.kyeyune@uos.de
Keywords: non-contact atomic force microscopy (NC-AFM), high resolution imaging, sublattice...
Theme: Biomaterials & Materials for Health
Keywords: Suncare, skin cancer, emulsions, nanomaterials
Authors: AJ ADDAE ยน, YOGENDRA KUMAR MISHRA ยฒ, JOEY CHIFAMBA ยณ, PAUL S. WEISS ยน, JUSTIN CARAM ยน
Department of Chemistry and Biochemistry, University of California Los Angeles
Mads Clausen Institute, NanoSYD, University of Southern Denmark
Department of Pharmaceutical...
Metallic glasses (MGs) are a class of amorphous metal materials with remarkable properties. By leveraging an abundance of uncoordinated active sites that can serve as catalytic regions, MGs can have high catalytic activity and long-term stability as compared to their crystalline counterparts. Conventional synthesis methods cannot produce nanosized MGs with precise control over composition,...
Magnetic polymer materials (MPMs) are of immense importance in aerospace, biotechnology, communications, electronics, and national defense. Dispersion of magnetic nanoparticles and their interfacial adhesion with polymer matrix plays crucial role in determining the physical properties of MPMs. Presently, MPMs are synthesized through either of mechanical or ultrasonic dispersion of magnetic...
The healing power of heat also known as hyperthermia is recognized as the new and promising form of cancer therapy aside from surgery, chemotherapy, and irradiation. In magnetic hyperthermia, an oscillating magnetic field is used to induce hyperthermia. In this study, the thermographic analysis is applied to analyse the magnetic hyperthermia in water-based magnetic nanofluids containing citric...
Advancedlab GmbH is responsible for the Sale and Service of specialized scientific equipment, accessories, and consumables across Sub-Saharan Africa, from World-leading manufacturers including, Nikon, JEOL, Instron, Struers Aps, TA Instruments, WITec GmbH, Kruss, Agar Scientific, and Motic. The company also has sister companies that operate exclusively in South Africa, which are Advanced...
ABSTRACT
Silver nanoparticles (AgNPs) have antibacterial and antimicrobial properties which make them useful in healthcare delivery, the fields of medicine and most recently by food packaging industries. AgNPs have also been infused into films used for making polyethylene containers for packaging foods and fruit juice resulting in reduced pasteurisation temperatures, and shielding them from...
CdSe Quantum dots with Benzyl Viologen Dichloride as a Ligand for Photodiode Application
OLA ELKALASHY 1, AHMED EL-HAMALAWY 2, ABDEL NASER AL-KAMEL 1, MOHAMED SHAFIK KHALIL 1, AFAF EL-SAYED 3,4,5, SHAIMAA A. MOHAMED 6, 7
- Photometry Department, National Institute of Standards, 12211 Giza, Egypt.
- Menoufia University, Faculty of Science, Department of Physics, Shebin El Kom,...
In this presentation, I will discuss the development of a label-free gold nanoparticles-based aptasensor for the detection of a SARS-COV-2 biomarker. I will outline the principle of the developed aptasensor and the results from the optical analysis, sensitivity analysis and limit of detection. I will use diagrams, graphs and images to illustrate the key concepts. The main conclusion will focus...
Electrochemical reduction of CO2 is an emerging and current issue for its conversion in to valuable product upon minimization of its atmospheric level for contribution of maintaining within the range of permissible limit. Among plenty of electro-catalysts gold and copper are efficient and effective catalysts, which are synthesized and applicable for this research work. The two metal catalysts...
This research examines how oil recovery can be enhanced using bio-silica nanoparticles combined with sodium dodecyl sulfate (SDS) surfactants. The main goal of this study is to assess how well the bio-silica grafted SDS complex can create emulsions in different conditions. To find the best formula for oil recovery, tests were done on interfacial tension (IFT) and contact angle, followed by...
Over the decades, numerous successful techniques have been developed for the engineering of nanostructures in the form of nanofibers, nanoparticles with various morphologies and hybrid systems. Materials engineering and design are at the center of this success. We first developed nanofibrous scaffolds with multiple functionalities for tissue engineering applications addressing infected wounds...
This paper underlines the latest approach of preparing nitrogen carbon nanoparticles fused on zinc oxide nanoparticle nanocomposite (N-CNPs/ZnONP nanocomposite) for the uptake of copper ions (Cu2+) from wastewater using a sol gel method. The metal loaded adsorbent was then applied in the latent fingerprint application. The N-CNPs/ZnONP nanocomposite proved to be a good sorbent for the optimal...
Green synthesis has gained extensive attention in materials science as a reliable, sustainable, and eco-friendly approach using natural resources such as plant extracts to synthesize a wide range of nanomaterials including metal oxides nanomaterials, hybrid materials, and bioinspired materials, minimizing the use of hazardous chemicals and energy. However, the synthesized nanoparticles exhibit...
In the present study, silver nanoparticles were synthesized using Erythrina abyssinica aerial parts as both reducing and capping agents. Three extracts were obtained from the plant using methanol, acetone and water. Successful biosynthesis of the silver nanoparticles was confirmed using UltravioletโVisible Spectrophotometry that recorded the Surface Plasmonic Resonance peak at around 420 nm....
: In recent decades, the solubility of carbon dioxide (COโ) in brine has gained increasing attention due to its critical role in carbon capture and storage (CCS) and enhanced oil recovery (EOR). Despite its importance, there is a lack of comprehensive data on the COโ-brine system, particularly in high-salinity environments and in the presence of functionalized nanomaterials. Building on a...
Abstract. This work investigates the effects of intermittent rolling on the microstructures and mechanical characteristics of the Mg-8% Li/bagasse nanoparticle composite. Bagasse nanoparticle-reinforced composites were created and rolled with thickness reductions of 50 and 90% using the stir casting technique. Studies on the microstructures of rolled composites reveal that small, elongated...
Materials used in space missions can be subjected to various types of radiation including neutrons, gamma, gases, and heavy ions. The damage sustained can be quite complex and simultaneously degrade the characteristic properties of materials. Recently, there has been a growing interest in the development of small satellites with more up-to-date technologies comparable to large conventional...
