Synthesis of Electrical Conductive Silica Nanofiber/Gold Nanoparticle Composite by Laser Pulses and Sputtering Technique
Abstract Biocompatible-sensing materials hold an important role in biomedical applications where there is a need to translate biological responses into electrical signals. Increasing the biocompatibility of these sensing devices generally causes a reduction in the overall conductivity due to the pro...
| Main Authors: | , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
SpringerOpen
2017-06-01
|
| Series: | Nanoscale Research Letters |
| Subjects: | |
| Online Access: | http://link.springer.com/article/10.1186/s11671-017-2200-z |
| _version_ | 1827880681108144128 |
|---|---|
| author | Sarah Hamza Anna Ignaszak Amirkianoosh Kiani |
| author_facet | Sarah Hamza Anna Ignaszak Amirkianoosh Kiani |
| author_sort | Sarah Hamza |
| collection | DOAJ |
| description | Abstract Biocompatible-sensing materials hold an important role in biomedical applications where there is a need to translate biological responses into electrical signals. Increasing the biocompatibility of these sensing devices generally causes a reduction in the overall conductivity due to the processing techniques. Silicon is becoming a more feasible and available option for use in these applications due to its semiconductor properties and availability. When processed to be porous, it has shown promising biocompatibility; however, a reduction in its conductivity is caused by its oxidization. To overcome this, gold embedding through sputtering techniques are proposed in this research as a means of controlling and further imparting electrical properties to laser induced silicon oxide nanofibers. Single crystalline silicon wafers were laser processed using an Nd:YAG pulsed nanosecond laser system at different laser parameters before undergoing gold sputtering. Controlling the scanning parameters (e.g., smaller line spacings) was found to induce the formation of nanofibrous structures, whose diameters grew with increasing overlaps (number of laser beam scanning through the same path). At larger line spacings, nano and microparticle formation was observed. Overlap (OL) increases led to higher light absorbance’s by the wafers. The gold sputtered samples resulted in greater conductivities at higher gold concentrations, especially in samples with smaller fiber sizes. Overall, these findings show promising results for the future of silicon as a semiconductor and a biocompatible material for its use and development in the improvement of sensing applications. |
| first_indexed | 2024-03-12T18:27:44Z |
| format | Article |
| id | doaj.art-1ca3b82b1dc14c1ea9d778fb2ecda9d0 |
| institution | Directory Open Access Journal |
| issn | 1931-7573 1556-276X |
| language | English |
| last_indexed | 2024-03-12T18:27:44Z |
| publishDate | 2017-06-01 |
| publisher | SpringerOpen |
| record_format | Article |
| series | Nanoscale Research Letters |
| spelling | doaj.art-1ca3b82b1dc14c1ea9d778fb2ecda9d02023-08-02T08:27:46ZengSpringerOpenNanoscale Research Letters1931-75731556-276X2017-06-0112111210.1186/s11671-017-2200-zSynthesis of Electrical Conductive Silica Nanofiber/Gold Nanoparticle Composite by Laser Pulses and Sputtering TechniqueSarah Hamza0Anna Ignaszak1Amirkianoosh Kiani2Department of Mechanical Engineering, Silicon Hall: Laser Micro/Nano Fabrication Facility, University of New BrunswickDepartment of Chemistry, University of New BrunswickDepartment of Mechanical Engineering, Silicon Hall: Laser Micro/Nano Fabrication Facility, University of New BrunswickAbstract Biocompatible-sensing materials hold an important role in biomedical applications where there is a need to translate biological responses into electrical signals. Increasing the biocompatibility of these sensing devices generally causes a reduction in the overall conductivity due to the processing techniques. Silicon is becoming a more feasible and available option for use in these applications due to its semiconductor properties and availability. When processed to be porous, it has shown promising biocompatibility; however, a reduction in its conductivity is caused by its oxidization. To overcome this, gold embedding through sputtering techniques are proposed in this research as a means of controlling and further imparting electrical properties to laser induced silicon oxide nanofibers. Single crystalline silicon wafers were laser processed using an Nd:YAG pulsed nanosecond laser system at different laser parameters before undergoing gold sputtering. Controlling the scanning parameters (e.g., smaller line spacings) was found to induce the formation of nanofibrous structures, whose diameters grew with increasing overlaps (number of laser beam scanning through the same path). At larger line spacings, nano and microparticle formation was observed. Overlap (OL) increases led to higher light absorbance’s by the wafers. The gold sputtered samples resulted in greater conductivities at higher gold concentrations, especially in samples with smaller fiber sizes. Overall, these findings show promising results for the future of silicon as a semiconductor and a biocompatible material for its use and development in the improvement of sensing applications.http://link.springer.com/article/10.1186/s11671-017-2200-zNanomaterialsSiliconLaser materials processingBiological sensing and sensorsMaterials and process characterizationNanostructure fabrication |
| spellingShingle | Sarah Hamza Anna Ignaszak Amirkianoosh Kiani Synthesis of Electrical Conductive Silica Nanofiber/Gold Nanoparticle Composite by Laser Pulses and Sputtering Technique Nanoscale Research Letters Nanomaterials Silicon Laser materials processing Biological sensing and sensors Materials and process characterization Nanostructure fabrication |
| title | Synthesis of Electrical Conductive Silica Nanofiber/Gold Nanoparticle Composite by Laser Pulses and Sputtering Technique |
| title_full | Synthesis of Electrical Conductive Silica Nanofiber/Gold Nanoparticle Composite by Laser Pulses and Sputtering Technique |
| title_fullStr | Synthesis of Electrical Conductive Silica Nanofiber/Gold Nanoparticle Composite by Laser Pulses and Sputtering Technique |
| title_full_unstemmed | Synthesis of Electrical Conductive Silica Nanofiber/Gold Nanoparticle Composite by Laser Pulses and Sputtering Technique |
| title_short | Synthesis of Electrical Conductive Silica Nanofiber/Gold Nanoparticle Composite by Laser Pulses and Sputtering Technique |
| title_sort | synthesis of electrical conductive silica nanofiber gold nanoparticle composite by laser pulses and sputtering technique |
| topic | Nanomaterials Silicon Laser materials processing Biological sensing and sensors Materials and process characterization Nanostructure fabrication |
| url | http://link.springer.com/article/10.1186/s11671-017-2200-z |
| work_keys_str_mv | AT sarahhamza synthesisofelectricalconductivesilicananofibergoldnanoparticlecompositebylaserpulsesandsputteringtechnique AT annaignaszak synthesisofelectricalconductivesilicananofibergoldnanoparticlecompositebylaserpulsesandsputteringtechnique AT amirkianooshkiani synthesisofelectricalconductivesilicananofibergoldnanoparticlecompositebylaserpulsesandsputteringtechnique |