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Biography
Eui-Hyeok Yang
Dr. EH Yang is a Professor in the Mechanical Engineering Department at Stevens Institute of Technology. The first to receive a MEMS Ph.D. in his native South Korea, he joined Stevens in 2006 following tenure as a senior member of the engineering staff at NASA Jet Propulsion Laboratory, where he was awarded, among other honors, the Lew Allen Award for Excellence for developing MEMS-based actuator
  • 1.0K
  • 12 Nov 2023
Topic Review
Metal Oxide Based Nano-Photocatalysts as Antiviral Agents
Photocatalysis, a unique process that occurs in the presence of light radiation, can potentially be utilized to control environmental pollution, and improve the health of society. Photocatalytic removal, or disinfection, of chemical and biological species has been known for decades; its extension to indoor environments in public places has always been challenging. Many efforts have been made in this direction since the COVID-19 pandemic started. The development of efficient photocatalytic nanomaterials through modifications to improve their photoactivity under ambient conditions for fighting with such a pandemic situation is a high research priority. Several metal oxides-based nano-photocatalysts have been designed to work efficiently in outdoor and indoor environments for the photocatalytic disinfection of biological species. 
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  • 30 Sep 2022
Topic Review
GD-AZO Composites
Graphene represents a new generation of materials which exhibit unique physicochemical properties such as high electron mobility, tunable optics, a large surface to volume ratio, and robust mechanical strength. These properties make graphene an ideal candidate for various optoelectronic, photonics, and sensing applications. . In recent years, numerous efforts have been focused on azobenzene polymers (AZO-polymers) as photochromic molecular switches and thermal sensors because of their light induced conformations and surface-relief structures.  However, these polymers often exhibit drawbacks like low photon storage lifetime, energy density and aggregation. These issues can be alleviated by incorporating graphene derivatives (GDs) into AZO-polymers to form orderly arranged molecules like GD-AZO composites.  
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  • 11 Oct 2021
Topic Review
Polymer/Clay Nanocomposites
Clays and clay minerals are common natural materials, the unique properties of which have attracted the interest of the industry, especially because these materials are easily available, cheap, and non-toxic. Clays and clay minerals are widely used in many applications, such as in ceramic production, in the clarification of liquids, pollutant adsorbers, filler in composites and nanocomposites, soil amendments, in pharmacy, etc.
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  • 18 Jan 2024
Topic Review
Reduction of Graphene Oxide by L-aa
The reduced form of graphene oxide (r-GO) represents a versatile precursor to obtain graphene-like materials. GO consists in a layered material based on a carbon skeleton functionalized by different oxygen-containing groups, while r-GO is obtained by the almost complete removal of  these oxygen-containing functional groups. The r-GO has mechanical, electrical, and optical properties quite similar to graphene, thus it proves to be a convenient 2D material useful for many technological applications. Consequently, the availability of effective soft-chemistry approaches based on  a green reducing agent for converting GO to r-GO are strongly needed. Among the green reductants the most suitable is the L-ascorbic acid (L-aa).
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  • 13 Oct 2022
Topic Review
GO/TiO2-Related Nanocomposites as Photocatalysts in Wastewater Treatment
Photocatalysis is a more recently applied concept and is proven to be able to completely remove and degrade pollutants into simpler organic compounds. Titanium dioxide (TiO2) is a fine example of a photocatalyst owing to its cost-effectiveness and superb efficiency. However, issues such as the high recombination rate of photogenerated electrons along with positive holes while being only limited to UV irradiation need to be addressed. Carbonaceous materials such as graphene oxide (GO) can overcome such issues by reducing the recombination rate and providing a platform for adsorption accompanied by photocatalytic degradation of TiO2.
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  • 28 Nov 2022
Topic Review
Biomedical Applications of Bio-inspired Nanomaterials in Micro/Nanodevices
Exploring bio-inspired nanomaterials (BINMs) and incorporating them into micro/nanodevices represent a significant development in biomedical applications. Nanomaterials, engineered to imitate biological structures and processes, exhibit distinctive attributes such as exceptional biocompatibility, multifunctionality, and unparalleled versatility. The utilization of BINMs demonstrates significant potential in diverse domains of biomedical micro/nanodevices, encompassing biosensors, targeted drug delivery systems, and advanced tissue engineering constructs. 
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  • 28 Sep 2023
Topic Review
Nanotechnology for Blood–Brain Barrier Crossing
Nanomedicine is currently focused on the design and development of nanocarriers that enhance drug delivery to the brain to address unmet clinical needs for treating neuropsychiatric disorders and neurological diseases. Polymer and lipid-based drug carriers are advantageous for delivery to the central nervous system (CNS) due to their safety profiles, drug-loading capacity, and controlled-release properties. Polymer and lipid-based nanoparticles (NPs) are reported to penetrate the blood–brain barrier (BBB) and have been extensively assessed in in vitro and animal models of glioblastoma, epilepsy, and neurodegenerative disease. Since approval by the Food and Drug Administration (FDA) of intranasal esketamine for treatment of major depressive disorder, intranasal administration has emerged as an attractive route to bypass the BBB for drug delivery to the CNS. NPs can be specifically designed for intranasal administration by tailoring their size and coating with mucoadhesive agents or other moieties that promote transport across the nasal mucosa.
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  • 28 Feb 2023
Topic Review
Three-Dimensional Printing Applications in Food Industry
Three-dimensional (3D) printing has gained increasing attention for its unique ability to create geometrically complex designs, which not only can be used for mass manufacturing but also has environmental and economic benefits. Additionally, as far as the food industry is concerned, this emerging technology has the potential to personalize products in terms of shape and/or nutritional requirements creating a wide range of food items with specially made shapes, colors, textures, tastes, and even nutrition using suitable raw materials/food components.
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  • 06 Apr 2023
Topic Review
Biosensing with 2D Transition Metal Dichalcogenides Materials
There has been an exponential surge in reports on two-dimensional (2D) materials ever since the discovery of graphene in 2004. Transition metal dichalcogenides (TMDs) are a class of 2D materials where weak van der Waals force binds individual covalently bonded X–M–X layers (where M is the transition metal and X is the chalcogen), making layer-controlled synthesis possible. These individual building blocks (single-layer TMDs) transition from indirect to direct band gaps and have fascinating optical and electronic properties. Layer-dependent opto-electrical properties, along with the existence of finite band gaps, make single-layer TMDs superior to the well-known graphene that paves the way for their applications in many areas. Ultra-fast response, high on/off ratio, planar structure, low operational voltage, wafer scale synthesis capabilities, high surface-to-volume ratio, and compatibility with standard fabrication processes makes TMDs ideal candidates to replace conventional semiconductors, such as silicon, etc., in the new-age electrical, electronic, and opto-electronic devices. Besides, TMDs can be potentially utilized in single molecular sensing for early detection of different biomarkers, gas sensors, photodetector, and catalytic applications. The impact of COVID-19 has given rise to an upsurge in demand for biosensors with real-time detection capabilities. TMDs as active or supporting biosensing elements exhibit potential for real-time detection of single biomarkers and, hence, show promise in the development of point-of-care healthcare devices. 
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  • 23 Feb 2023
Topic Review
Applications of Nanoporous Anodic Aluminum Oxide in Sensors
Nanoporous anodic aluminum oxide (AAO) is an important template for 1D nanomaterial synthesis. It is used as an etching template for nanopattern transfer in a variety of contexts, including nanostructured material synthesis, electrical sensors, optical sensors, photonic and electronic devices, photocatalysis, and hardness and anticorrosion improvement.
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  • 22 Jan 2024
Topic Review
Supercritical Carbon-di-Oxide Technology for Polymeric-Particles
Supercritical carbon dioxide (SC-CO2)  based techniques can be exploited for the formulation of polymeric nanocarriers, limiting the use of toxic organic solvent. The currently approved FDA pharmaceutical polymers like PLA and PLGA particles can be obtained in the micro-and nanometer range by techniques that involve SC-CO2 as solvent (RESS, RESOLV), anti-solvent (SAS, SEDS, SAILA) or extractant (SFEE), depending on the SC-CO2 compatibility with the system materials and the final product.
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  • 27 Apr 2021
Topic Review
Impact of Carbon Dots on Crop Growth
Carbon dots are carbon-based nanoparticles, which have the characteristics of a simple preparation process, photoluminescence, biocompatibility, an adjustable surface function, water solubility, and low-level toxicity. They are widely used in biological applications, such as imaging, biosensing, photocatalysis, and molecular transfer. They have also aroused great interest among researchers in agriculture, and there has been significant progress in improving crop growth and production. 
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  • 11 Oct 2023
Topic Review
Carbon Nano-Infused Cementitious Composites
A rising demand for efficient functional materials brings forth research challenges regarding improvements in existing materials. Carbon infused cementitious composites, regardless of being an important research topic worldwide, still present many questions concerning their functionality and properties.
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  • 29 Sep 2021
Topic Review
Hyaluronic Acid-Conjugated Carbon Nanomaterials
Hyaluronic acid (HA) has been implemented for chemo and photothermal therapy to target tumour cells overexpressing the CD44+ receptor. HA-targeting hybrid systems allows carbon nanomaterial (CNM) carriers to efficiently deliver anticancer drugs, such as doxorubicin and gemcitabine, to the tumour sites. 
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  • 07 Jan 2022
Topic Review
Clay Nanotube-Based Composites
Halloysite nanotubes with different outer surface/inner lumen chemistry (SiO2/Al2O3) are natural objects with a 50 nm diameter hollow cylindrical structure, which are able to carry functional compounds both inside and outside. They are promising for biological applications where their drug loading capacity combined with a low toxicity ensures the safe interaction of these nanomaterials with living cells.
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  • 23 Jun 2021
Topic Review
MXene-Based NA Biosensors in the Agricultural Food System
MXene is a two-dimensional (2D) nanomaterial that exhibits several superior properties suitable for fabricating biosensors. Likewise, the nucleic acid (NA) in oligomerization forms possesses highly specific biorecognition ability and other features amenable to biosensing. Hence the combined use of MXene and NA is becoming increasingly common in biosensor design and development. NAs in oligomerization forms are usually integrated into biosensors as biorecognition elements due to their high specificity toward different target entities. The most well-known NAs are deoxyribonucleic acid (DNA) and ribonucleic acid (RNA). According to the development stage, there are three kinds of NA biosensors, each with a unique function: (1) genosensor, (2) aptasensor, and (3) DNAzyme/aptazyme biosensors. These biosensors are now widely explored and used in different areas, e.g., food safety monitoring, environment analysis, etc.
  • 1.0K
  • 19 Dec 2022
Topic Review
Bio-Inspired Smart Nanoparticles in Oncology
Compared with traditional treatment, nanotechnology offers new therapeutic options for cancer due to its ability to selectively target and control drug release. Among the various routes of nanoparticle synthesis, plants have gained significant recognition. The tremendous potential of medicinal plants in anticancer treatments calls for a comprehensive research of existing studies on plant-based nanoparticles. The research examined various metallic nanoparticles obtained by green synthesis using medicinal plants. Plants contain biomolecules, secondary metabolites, and coenzymes that facilitate the reduction of metal ions into nanoparticles. These nanoparticles are believed to be potential antioxidants and cancer-fighting agents.
  • 1.0K
  • 02 Nov 2022
Topic Review
Translational Formulation Technologies for Cancer-Therapy
Over the past few decades, the field of cancer therapy has seen a significant change in the way in which formulations are designed and developed, resulting in more efficient products that allow us to ultimately achieve improved drug bioavailability, efficacy, and safety. However, although many formulations have entered the market, many others have fallen by the wayside leaving the scientific community with several lessons to learn.
  • 1.0K
  • 16 Nov 2020
Topic Review
Poly(Lactic-Co-Glycolic Acid)-Gold Nanoparticles
A composite system consisting of both organic and inorganic nanoparticles is an approach to prepare a new material exhibiting “the best of both worlds”. With the current clinically use of poly(lactic-co-glycolic acid)-gold nanoparticles (PLGA-GNP), PLGA-based nanocarriers have promising pharmaceutical applications and can “extract and utilize” the fascinating optical and photothermal properties of encapsulated GNP. The resulting “golden polymeric nanocarrier” can be tracked, analyzed, and visualized using the encapsulated gold nanoprobes which facilitate a better understanding of the hosting nanocarrier’s pharmacokinetics and biological fate. In addition, the “golden polymeric nanocarrier” can reveal superior nanotherapeutics that combine both the photothermal effect of the encapsulated gold nanoparticles and co-loaded chemotherapeutics. 
  • 1.0K
  • 07 Apr 2022
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