Review of aerogel-based materials in biomedical applications

Stergar, Janja; Maver, Uroš

doi:10.1007/s10971-016-3968-5

Cited by 214 publications

(134 citation statements)

References 130 publications

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“…Aerogel can be produced in a variety of textures including micropore, mesopore, and macropore. 13 Figure 2 shows the density versus enthalpy of the system which indicates that the aerogel is between two phases namely liquid and gas states. [14][15][16][17] The microporous texture is produced in the main particle, while the larger pores are produced in the voids between the particles.…”

Section: Introductionmentioning

confidence: 99%

Current status, opportunities, and challenges in fuel cell catalytic application of aerogels

Shaari

Kamarudin

2019

Int J Energy Res

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Summary Aerogel is known as one of today's 10 advanced structures that have earned a special place in industry or research based on its very high porosity, high active surface area, and low density. There are various methods that can be used to produce it as well as make it easily produced in bulk as subtopics in this paper in Section 2.0. At present, aerogels are widely used in catalytic applications, energy storage, photocatalysts, membrane separation, and fuel cells. Aerogel application in fuel cell has been discussed in Section 3.0 which include carbon‐based aerogel, graphene‐based aerogel, other aerogel based, and non‐noble catalyst with aerogel. This article is a reference for researchers to identify the advantages and opportunities available to lower costs and improve the performance of fuel cell systems that rely heavily on cost‐rich catalysts such as platinum. Opportunities and challenges in developing aerogel structures in the future are also explained in Section 5.0 in this paper.

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Section: Introductionmentioning

confidence: 99%

Current status, opportunities, and challenges in fuel cell catalytic application of aerogels

Shaari

Kamarudin

2019

Int J Energy Res

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“…Aerogels are 3D polymer networks with high porosity and low density. Aerogels based on cellulose and NFC have been used for applications such as thermal insulation [30] , biomedical applications [31] and energy storage [32] .…”

Section: Nanofibrillated Cellulosementioning

confidence: 99%

“…[29,[135][136] However, non-polymeric materials such as carbon and silica are also often used. [31] In the literature, aerogels have been used in a wide range of applications such as: biomedical application, such as for drug delivery and tissue regeneration [31] , water cleaning and oil absorption [137][138] , thermal insulation [30,[139][140] and supercapacitors [32,[141][142][143] . …”

Section: Freeze-dryingmentioning

confidence: 99%

Flexible and Cellulose-based Organic Electronics

Edberg

2017

Linköping Studies in Science and Technology. Dissertations

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“…Aerogel is a class encompassing a variety of materials with micro-or nano-porous structure giving rise to their low-or ultra-low effective density and good or excellent thermal insulation and structural strength. Aerogels are considered for many applications including thermal or electric insulation, filtration, catalyst support, and aerospace among others [1][2][3][4] and can be derived from materials such as silica, metal oxides, metals, and polymers and can have open cell or closed cell structure. [3][4][5][6] Aerogels have not been used in radiation physics except as radiators in Cherenkov detectors to measure cosmic rays and in particle accelerator measurements.…”

Section: Introductionmentioning

confidence: 99%

“…Aerogels are considered for many applications including thermal or electric insulation, filtration, catalyst support, and aerospace among others [1][2][3][4] and can be derived from materials such as silica, metal oxides, metals, and polymers and can have open cell or closed cell structure. [3][4][5][6] Aerogels have not been used in radiation physics except as radiators in Cherenkov detectors to measure cosmic rays and in particle accelerator measurements. [7][8][9] Specifically, silica aerogels have been used as Cerenkov radiator due to their optical propertiestheir refractive index being proportional to the bulk density ranging from gas to liquid densities.…”

Section: Introductionmentioning

confidence: 99%

Self‐powered nano‐porous aerogel x‐ray sensor employing fast electron current

et al. 2019

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Purpose We developed a new class of aerogel‐based thin‐film self‐powered radiation sensors employing high‐energy electron current (HEC) in periodic multilayer (high‐Z | polyimide aerogel (PA) | low‐Z) electrode microstructures. Materials Low‐Z (Al) and high‐Z (Ta) electrodes were deposited on 50 μm‐thick PA films to obtain sensors with Al‐PA‐Ta‐PA‐Al structures. Sensors were tested with x rays in the 40–120 kVp range and with 2.5 MV, 6 MV, and 6 MV‐FFF linac beams (TrueBeam, Varian). Performance of PA‐HEC sensors was compared to commercial A12 Farmer ionization chamber as well as to radiation transport simulations using CEPXS/ONEDANT with nanometer‐to‐micrometer spatial resolution. The computations included periodic and single‐element structures N x (Al‐PA‐Ta‐PA‐Al) with variable layer thicknesses. Results Signal from PA‐HEC sensors was proportional to the simulated net leakage electron current (averaged over the PA thickness). Experimental response was linear with dose and independent of dose rate. Detector responses to different x‐ray sources show higher signals for kVp photon energies, as expected, though a strong signal was obtained for MV energies as well. The signal scaled with total effective area inside the multielemental structures; for example, the yield of a multielement sensor made with 20 Ta layers compared to a single‐element structure with 1 Ta layer of the same total thickness of Ta was 10 times greater for 6 MV beam and 23 times greater for 120 kVp. Beam attenuation per element in the detector was 0.5%, 1%, 3%, and 46%, respectively for 6 MV, 6 MV FFF, 2.5 MV, and 120 kVp. Conclusion We demonstrated the feasibility of aerogel‐based multilayer HEC radiation detector and its application for flux/dose monitoring of kVp and radiotherapy MV beams with small beam attenuation.

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Review of aerogel-based materials in biomedical applications

Cited by 214 publications

References 130 publications

Current status, opportunities, and challenges in fuel cell catalytic application of aerogels

Current status, opportunities, and challenges in fuel cell catalytic application of aerogels

Flexible and Cellulose-based Organic Electronics

Self‐powered nano‐porous aerogel x‐ray sensor employing fast electron current

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