Subject:
All Disciplines Arts & Humanities Biology & Life Sciences Business & Economics Chemistry & Materials Science Computer Science & Mathematics Engineering Environmental & Earth Sciences Medicine & Pharmacology Physical Sciences Public Health & Healthcare Social Sciences
Sort:
Hottest Latest Alphabetical (A-Z) Alphabetical (Z-A)
Type:
All Topic Review Biography
Topic Review
Directed Self-Assembly of Block Copolymers
Directed self-assembly (DSA) of block copolymers (BCPs) is a bottom-up approach to nanofabrication based on the ability of BCPs to phase separate spontaneously. It is an attractive technique for the fabrication of nanoscale structures thanks to its high resolution, low cost, ease of integration and scalability.
  • 1.2K
  • 16 Jun 2021
Topic Review
Disentangled Polymers and Composites
Macromolecule entanglements are common in polymers. The chains of macromolecules with carbon skeletons are flexible. The isolated chain easily takes the shape of a coil. When a macromolecule is surrounded by other macromolecules, its coils interpenetrate, and entanglements arise between these macromolecules. The condition of their occurrence is that their molecular weight exceeds a certain limit. The entanglements may be topological (these are common) or cohesive. Entanglement with another macromolecule limits the movement of the macromolecule's chain, so it is an obstacle to this movement.
  • 358
  • 29 Dec 2023
Topic Review
Drug Delievery of Nanocrystals
The development of new drugs is often hindered by low solubility in water, a problem common to nearly 90% of natural and/or synthetic molecules in the discovery pipeline. Nanocrystalline drug technology involves the reduction in the bulk particle size down to the nanosize range, thus modifying its physico-chemical properties with beneficial effects on drug bioavailability. Nanocrystals (NCs) are carrier-free drug particles surrounded by a stabilizer and suspended in an aqueous medium. Due to high drug loading, NCs maintain a potent therapeutic concentration to produce desirable pharmacological action, particularly useful in the treatment of central nervous system (CNS) diseases. In addition to the therapeutic purpose, NC technology can be applied for diagnostic scope. The possibility of adapting NCs to different pharmaceutical forms has led to the development of these nanosystems for different routes of administration, among which the most studied is the oral route.
  • 483
  • 02 Apr 2022
Topic Review
Durability Performance of Geopolymer Concrete
Geopolymer concrete is produced from the geopolymerization process, in which molecules known as oligomers integrate to form geopolymer networks with covalent bonding. Its production expends less thermal energy and results in a smaller carbon footprint compared to Ordinary Portland Cement (OPC) concrete. It requires only an alkaline activator to catalyze its aluminosilicate sources such as metakaolin and fly ash, to yield geopolymer binder for the geopolymerization to take place. Because of its eco-friendly technology and practical application, current research interest is mainly concentrated on the endurance of geopolymer concrete to resist heat and chemical aggressions. 
  • 1.2K
  • 07 Mar 2022
Topic Review
E-Polymers
E-polymers, also known as conducting polymers, are a class of materials that exhibit both electrical conductivity and the mechanical properties of polymers. The use of e-polymer materials in daily life is becoming increasingly widespread, especially in the field of biology. Since the manufacturing cost of e-polymer implants is relatively low and e-polymers also react, causing different chemical molecules to attach to the surface of the implant, they are more compatible with the surrounding environment of the body. Some e-polymers are biodegradable in the body. If used for temporary implants, the advantage of these polymers is that they can gradually degrade in the body after performing their functions, thereby reducing the possibility of any long-term complications. Polymers and their composite materials can be designed to have inherent tensile properties while maintaining their high performance, making them favorable candidates for the next generation of skin-inspired electronic materials.
  • 359
  • 16 Jan 2024
Topic Review
Eco-Friendly Emergent Structural Adhesives
Using adhesives for connection technology has many benefits. It is cost-efficient, fast, and allows homogeneous stress distribution between the bonded surfaces. 
  • 1.0K
  • 22 Apr 2021
Topic Review
Effect of Nano-Additives on PLA/Nanocomposite Properties
Poly(lactic acid) (PLA) is considered the most promising biobased substitute for fossil-derived polymers due to its compostability, biocompatibility, renewability, and good thermomechanical properties. However, PLA suffers from several shortcomings, such as low heat distortion temperature, thermal resistance, and rate of crystallization, whereas some other specific properties, i.e., flame retardancy, anti-UV, antibacterial or barrier properties, antistatic to conductive electrical characteristics, etc., are required by different end-use sectors. The addition of different nanofillers represents an attractive way to develop and enhance the properties of neat PLA. Numerous nanofillers with different architectures and properties have been investigated, with satisfactory achievements, in the design of PLA nanocomposites.
  • 555
  • 21 Mar 2023
Topic Review
Electrical Resistance/Conductivity of CFRP
This entry provides a comprehensive basis for readers to grasp recent research progresses on electrical behaviors of Carbon fiber reinforced polymer (CFRP), which plays an important role in many fields, especially in aviation and civil industries. The electrical conductivity of CFRP is critical for its electrical behaviors, such as its lightning strike vulnerability, electromagnetic shielding ability, and potential uses for self-sensing. In addition, the electrical conductivity is related to the mechanical integrity. Therefore, electrical properties can be measured as an indication in the detection of delamination and other defects in CFRP. 
  • 6.4K
  • 01 Nov 2020
Topic Review
Electroactive Polymers
Electroactive polymers (EAPs) are a versatile class of electrically deformable polymers. These polymers have the ability to deform when excited by electrical potentials due to their inherent electro-mechanical properties. The piezoelectric couplings in EAPs provide them with unique capabilities that are of significant interest in actuators and soft robotics.
  • 3.0K
  • 12 Oct 2021
Topic Review
Electronics Applications of P(VDF-TrFE) Composites
Piezoelectric polymers are a class of material that belong to carbon–hydrogen-based organic materials with a long polymer chain. They fill the void where single crystals and ceramics fail to perform. This characteristic of piezoelectric polymers made them unique. Their piezoelectric stress constant is higher than ceramics and the piezoelectric strain is lower compared to ceramics. 
  • 419
  • 20 Dec 2023
  • Page
  • of
  • 46
Featured Entry Collections
>>

Featured Books

>>
Encyclopedia of Social Sciences
Encyclopedia of COVID-19
Encyclopedia of Fungi
Encyclopedia of Digital Society, Industry 5.0 and Smart City
Video Production Service
Feedback