The development of stretchable conductors with high deformation,conductivity,and thermal conductivity using liquid metal(LM)has sparked widespread interest in the fields of flexible electronics,electromagnetic interfe...The development of stretchable conductors with high deformation,conductivity,and thermal conductivity using liquid metal(LM)has sparked widespread interest in the fields of flexible electronics,electromagnetic interference(EMI),and multifunctional materi-als.However,fabricating desirable shielding materials by directly coating LMs on soft polymer substrates remains a challenge because of the huge surface tension and weak wettability of LMs.In this study,Ga-based composite paste is prepared from a mixture of Ga and dia-mond nonmetallic particles through ultrasonic fragmentation.At various temperatures,the resulting LM composite putty(LMP)exhibits soft and hard properties and can thus be molded into specific shapes according to application needs.In addition,the composite can be eas-ily coated onto polymer substrates,such as thermoplastic polyurethane(TPU)elastomer.The fabricated LMP–TPU exhibits an impress-ive shape deformation capacity of 1100%,demonstrating exceptional tensile properties and achieving electromagnetic interference–shielding effectiveness of up to 52 dB.Furthermore,it retains an ultrahigh conductivity of 20000 S/m,even under a strain of 600%.This feature further makes it a highly competitive multifunctional material.展开更多
Objectives: The aim of this study was to compare the efficacy of using the synthetic β-TCP bone grafting material in two different manufacturing forms (putty and granular) in grafting the jumping zone around immediat...Objectives: The aim of this study was to compare the efficacy of using the synthetic β-TCP bone grafting material in two different manufacturing forms (putty and granular) in grafting the jumping zone around immediate implant. Patients and Method: A randomized controlled clinical and radiographic trial was conducted on 24 male patients aged from 45 - 55 with badly decayed non-restorable teeth in the posterior mandibular area and seeking for receiving immediate dental implant directly after extraction. Vertical bone height and bone density were taken at time of implant placement and 6 months postoperatively. Results: The Putty form group and the Granular form group did not differ statistically in terms of age, post-operative complications, or implant outcome six months postoperatively. Additionally, there was a statistically significant increase in Putty form group compared to the Granular form group regarding Marginal bone loss 6 months postoperatively, but there was no statistically significant difference between the Putty form group and the Granular form group regarding Bone density by CBCT. Conclusion: The β-TCP Putty material, compared to β-TCP granular, displayed better surgical handling properties, and both forms had no adverse effect on bone formation, bone tissue maturation or graft volume stability, The β-TCP granular material, compared to β-TCP putty, displayed less marginal bone loss 6 months post-operatively.展开更多
基金supported by the National Natural Science Foundation of China(Nos.52271167 and U21A2064)the Key Program of Natural Science Foundation of Henan Province,China(No.242300421188)+1 种基金ZUA Innovation Fund for Graduate Education,China(No.2024CX134)Henan Key Laboratory of Aeronautical Material and Technology Open Foundation,China(No.ZHKF-240103).
文摘The development of stretchable conductors with high deformation,conductivity,and thermal conductivity using liquid metal(LM)has sparked widespread interest in the fields of flexible electronics,electromagnetic interference(EMI),and multifunctional materi-als.However,fabricating desirable shielding materials by directly coating LMs on soft polymer substrates remains a challenge because of the huge surface tension and weak wettability of LMs.In this study,Ga-based composite paste is prepared from a mixture of Ga and dia-mond nonmetallic particles through ultrasonic fragmentation.At various temperatures,the resulting LM composite putty(LMP)exhibits soft and hard properties and can thus be molded into specific shapes according to application needs.In addition,the composite can be eas-ily coated onto polymer substrates,such as thermoplastic polyurethane(TPU)elastomer.The fabricated LMP–TPU exhibits an impress-ive shape deformation capacity of 1100%,demonstrating exceptional tensile properties and achieving electromagnetic interference–shielding effectiveness of up to 52 dB.Furthermore,it retains an ultrahigh conductivity of 20000 S/m,even under a strain of 600%.This feature further makes it a highly competitive multifunctional material.
文摘Objectives: The aim of this study was to compare the efficacy of using the synthetic β-TCP bone grafting material in two different manufacturing forms (putty and granular) in grafting the jumping zone around immediate implant. Patients and Method: A randomized controlled clinical and radiographic trial was conducted on 24 male patients aged from 45 - 55 with badly decayed non-restorable teeth in the posterior mandibular area and seeking for receiving immediate dental implant directly after extraction. Vertical bone height and bone density were taken at time of implant placement and 6 months postoperatively. Results: The Putty form group and the Granular form group did not differ statistically in terms of age, post-operative complications, or implant outcome six months postoperatively. Additionally, there was a statistically significant increase in Putty form group compared to the Granular form group regarding Marginal bone loss 6 months postoperatively, but there was no statistically significant difference between the Putty form group and the Granular form group regarding Bone density by CBCT. Conclusion: The β-TCP Putty material, compared to β-TCP granular, displayed better surgical handling properties, and both forms had no adverse effect on bone formation, bone tissue maturation or graft volume stability, The β-TCP granular material, compared to β-TCP putty, displayed less marginal bone loss 6 months post-operatively.
