Stepwise Pore Size Reduction of Ordered Nanoporous Silica Materials at Angstrom Precision

2013 ◽  
Vol 135 (23) ◽  
pp. 8444-8447 ◽  
Author(s):  
Siddharth Jambhrunkar ◽  
Meihua Yu ◽  
Jie Yang ◽  
Jun Zhang ◽  
Abhijit Shrotri ◽  
...  
Keyword(s):  
Pore Size ◽  
Size Reduction ◽  
Nanoporous Silica ◽  
Silica Materials

Influence of Pore Size on Enzymes Adsorption in Mesostructure Cellular Foams (MCFs)

2009 ◽  
Vol 610-613 ◽  
pp. 109-113
Author(s):  
Wei Na ◽  
Qi Wei ◽  
Ze Chang Zou ◽  
Zhi Hong Wang ◽  
Qun Yan Li ◽  
...  
Keyword(s):  
Pore Size ◽  
High Surface ◽  
High Surface Area ◽  
Window Size ◽  
Molecular Size ◽  
Suitable Host ◽  
Small Window ◽  
Cellular Foams ◽  
Silica Materials ◽  
Large Pore Volume

Mesoporous silica materials are attractive candidates for enzymes immobilization due to their high surface area, tunable pore size, large pore volume and biocompatibility. In this work, two different enzymes, papain, a small globular enzyme with molecular diameter of 3.6nm, and catalase, a relatively larger enzyme with molecular diameter of 10.4nm were introduced into the pores of siliceous mesostructed cellular foams (MCFs) that had a large cellular pores of 29nm and a small window size of 12nm, respectively. The amount of adsorbed enzymes was found to be dependent on the molecular size of enzymes. The amount of adsorbed catalase was more than two times that of adsorbed papain, suggesting that MCFs with large pores is a suitable host for large enzymes adsorption. The blocking of pores which resulted from aggregation of enzymes in the windows of MCFs and the higher leaching of enzymes form MCFs may be the reason of lower papain adsorption capacity in MCFs.

Pore-size reduction protocol for SiN membrane nanopore using the thermal reflow in nanoimprinting for nanobio-based sensing

2014 ◽  
Vol 19 (5) ◽  
pp. 051211
Author(s):  
Dae-Sik Lee ◽  
Hyun-Woo Song ◽  
Choon-Gi Choi ◽  
Mun Youn Jung
Keyword(s):  
Pore Size ◽  
Size Reduction ◽  
Sin Membrane ◽  
Thermal Reflow

Pore Size Reduction in Zirconium Metal–Organic Frameworks for Ethylene/Ethane Separation

2019 ◽  
Vol 7 (7) ◽  
pp. 7118-7126 ◽  
Author(s):  
Yuxiang Wang ◽  
Shuai Yuan ◽  
Zhigang Hu ◽  
Tanay Kundu ◽  
Jian Zhang ◽  
...  
Keyword(s):  
Pore Size ◽  
Metal Organic Frameworks ◽  
Size Reduction ◽  
Metal Organic ◽  
Zirconium Metal

Nanofat in Facial Rejuvenation

2020 ◽  
pp. 074880682091993
Author(s):  
Nabil Fakih-Gomez ◽  
Enosh Steward ◽  
Maria del Carmen Orte Aldea
Keyword(s):  
Pore Size ◽  
Recovery Period ◽  
Size Reduction ◽  
Skin Texture ◽  
Skin Rejuvenation ◽  
Local Infiltration ◽  
Beneficial Effects ◽  
Donor Area ◽  
Lateral Thigh ◽  
Skin Wrinkles

Several reports have been published wherein intradermal filling with nanofat has been used for skin rejuvenation, texture improvement and scar treatment. A study was conducted between August 2017 and August 2018 which included 20 female patients having wrinkles, hyperpigmentation, erythema, and enlarged pores. Lidocaine cream, local infiltration with lidocaine or sedation was used in accordance with the patient’s convenience. Nanofat was injected intradermally in all the facial regions. All patients filled a questionnaire at sixth month post treatment which consisted of questions regarding pain, bumps area and resolution, grade of improvement of skin (wrinkles, smoothness, wrinkles, pores and redness), recovery of donor area, time to reincorporate to normal routine, nanofat-time efficacy and recommendation of the treatment. Patients undergoing it with sedation had less bruising and pain. Lateral thigh as the donor area had less pain in the recovery period. The residual bumps persisted for more time in non-mobile areas while average time to disappear was 3.6 weeks. Patients started to notice the change after nanofat injections at about 1.12 months later. The improvement was noticed for smoothness of skin (100% patients), wrinkles (40% patients), pore size reduction (15% patients), improvement in redness (10% patients). The effect of nanofat was felt by patients for an average time of 3.85 months. All the patients were satisfied and recommended it. No major complications were reported. Nanofat treatment is safe and it conveys beneficial effects on skin rejuvenation as per the post-operative skin texture changes and the satisfaction of patients.

Pore Size Reduction by Methyl Function in Aluminum-Based Metal–Organic Frameworks for Xenon/Krypton Separation

2020 ◽  
Vol 20 (12) ◽  
pp. 8039-8046
Author(s):  
Zhaotong Yan ◽  
Youjin Gong ◽  
Chu-Ting Yang ◽  
Xiaonan Wu ◽  
Boyu Liu ◽  
...  
Keyword(s):  
Pore Size ◽  
Metal Organic Frameworks ◽  
Size Reduction ◽  
Metal Organic

scholarly journals Slow dynamics of supercooled water confined in nanoporous silica materials

2004 ◽  
Vol 16 (45) ◽  
pp. S5403-S5436 ◽  
Author(s):  
L Liu ◽  
A Faraone ◽  
C-Y Mou ◽  
C-W Yen ◽  
S-H Chen
Keyword(s):  
Supercooled Water ◽  
Nanoporous Silica ◽  
Slow Dynamics ◽  
Silica Materials

Modelling the assembly of nanoporous silica materials

2014 ◽  
Vol 34 (1) ◽  
pp. 35-70 ◽  
Author(s):  
Scott M. Auerbach ◽  
Wei Fan ◽  
Peter A. Monson
Keyword(s):  
Nanoporous Silica ◽  
Silica Materials
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