Effect Of Metal Ion Doping On The Radar Absorption Performance Of Skin Collagen Fiber-Based Absorbers
Keywords
Collagen Fibers, Metal Ions, Doping, Radar Waves, Reflection Loss
Abstract
Abstract: React skin collagen fibers (CF) with salicylaldehyde (Sa) to obtain collagen fibers (Sa-CF) containing Schiff base structure (-C=N-), and then further use Fe3+, Mn2+, Co2+, Cu2+ Sa-CF was “doped” with Zn2+ transition metal ions to prepare skin collagen fibers (M-Sa-CF) with radar wave absorption properties. CF, Sa-CF and M-Sa-CF were pressed into films respectively, their conductivity was measured using the probe method, and their reflection loss (RL) of radar waves (frequency 0.5-18.0 GHz) was measured using the arcuate method. The results show that the conductivity of CF is only 1.08¡Á10-9 S?cm-1, while the conductivity of Sa-CF can be increased by 3 orders of magnitude to 2.86¡Á10-6 S?cm-1; then doped with metal ions Afterwards, its conductivity was further improved. For example, the conductivity after Zn2+ doping reached 8.37¡Á10-4 S?cm-1. The absorption mechanism of Sa-CF and M-Sa-CF is electrical loss type. After Sa-CF is doped with metal ions, the conductivity increases and the reflection loss of radar waves is enhanced. However, the reflection loss increases after doping with different metal ions. The amplitude is different. The Sa-CF radar wave reflection loss reaches a maximum of 7.57dB at 8.8 GHz. After Cu2+ doping, the radar wave reflection loss reaches a maximum of 8.35 dB at 8.29 GHz. After Fe3+ doping, the radar wave reflection loss reaches 8.11 dB. The maximum value at GHz is 14.68 dB. By doping Fe3+, Mn2+ and Zn2+ with metal ions with half-shell and full-shell electronic configurations, the reflection loss of radar waves can be greatly increased, and the absorption frequency band is broadened. In addition, with different doping amounts, the maximum reflection loss and the frequency at which the maximum reflection loss occurs change.
For further information of this article and research, feel free to contact our team for asssitance.
Original research was done by Liu Yishan, Liao Xuepin, Shi Bi, Guo Peipei
About ETChem
ETChem, a reputable Chinese Collagen factory manufacturer and supplier, is renowned for producing, stocking, exporting, and delivering the highest quality collagens. They include marine collagen, fish collagen, bovine collagen, chicken collagen, type I collagen, type II collagen and type III collagen etc. Their offerings, characterized by a neutral taste, and instant solubility attributes, cater to a diverse range of industries. They serve nutraceutical, pharmaceutical, cosmeceutical, veterinary, as well as food and beverage finished product distributors, traders, and manufacturers across Europe, USA, Canada, Australia, Thailand, Japan, Korea, Brazil, and Chile, among others.
ETChem specialization includes exporting and delivering tailor-made collagen powder and finished collagen nutritional supplements. Their extensive product range covers sectors like Food and Beverage, Sports Nutrition, Weight Management, Dietary Supplements, Health and Wellness Products, ensuring comprehensive solutions to meet all your protein needs.
As a trusted company by leading global food and beverage brands and Fortune 500 companies, ETChem reinforces China’s reputation in the global arena. For more information or to sample their products, please contact them and email karen(at)et-chem.com today.
