Photonic porous silicon as a pH sensor

Pace, Stéphanie; Vasani, Roshan; Zhao, Wei; Perrier, Sébastien; Voelcker, Nicolas H.

doi:10.1186/1556-276x-9-420

Cited by 24 publications

(14 citation statements)

References 27 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The use of PSi in wound healing applications has also gained interest lately. This is also one of the applications where additional functionality, such as the possibility for glucose or pH sensing, would be beneficial . However, so far, the main focus of the studies has been delivering essential components for wound healing to the site, such as antibacterial nitric oxide, Flightless I siRNA, vancomycin, resveratrol, or using plain platelet lysate‐modified particles to deliver growth factors into the wound .…”

Section: Recent Progress In Applications Of Thermally Carbonized Poromentioning

confidence: 99%

Thermally Carbonized Porous Silicon and Its Recent Applications

Salonen

Mäkilä

2018

Advanced Materials

View full text Add to dashboard Cite

Recent progress in research on thermally carbonized porous silicon (TCPSi) and its applications is reported. Despite a slow start, thermal carbonization has now started to gain interest mainly due to new emerging areas for applications. These new areas, such as optical sensing, drug delivery, and energy storage, require stable surface chemistry and physical properties. TCPSi is known to have all of these desired properties. Herein, the above-listed properties of TCPSi are summarized, and the carbonization processes, functionalization, and characterization of TCPSi are reviewed. Moreover, some of the emerging fields of TCPSi applications are discussed and recent advances in the fields are introduced.

show abstract

Section: Recent Progress In Applications Of Thermally Carbonized Poromentioning

confidence: 99%

Thermally Carbonized Porous Silicon and Its Recent Applications

Salonen

Mäkilä

2018

Advanced Materials

View full text Add to dashboard Cite

show abstract

“…The new surface coverage appeared to have good passivation e®ect compared with the OPS. Similarly, Chaudhari et al, 13 had also obtained enhanced photoluminescence with peak position at 610 nm while immobilizing urease into the porous silicon matrix. Benyahia et al, 1 had obtained enhanced photoluminescence with blueshift while PS surface modi¯ed by hydrocarbon layer.…”

Section: Photoluminescencementioning

confidence: 91%

“…10 Recently, PS nanoparticles have emerged as multifunctional and versatile platforms for pH sensor, reversible gas sensing, capacitance device, memristive device fabrication, diagnostic imaging, to monitor enzymatic activity, delivery of a variety of therapeutics, ranging from small-molecule drugs to larger peptide/protein-type therapeutics. [11][12][13][14][15][16][17][18] In the present investigation, the changes caused by in¯ltration of Glucose oxide over the optical properties, and surface modi¯cation, on oxidized and Glucose treated PS were studied using PL, Fourier Transform Infrared Spectroscopy (FTIR) and Scanning electron microscope (SEM). The spontaneous imbibition weight was calculated using the general spontaneous imbibition of wetting liquid.…”

Section: Introductionmentioning

confidence: 99%

Functionalization of Biomolecules With Nanostructured Porous Silicon for Biomedical Application

Jeyakumar¹,

Saravanakumar²,

Kulathuraan³

et al. 2015

Surf. Rev. Lett.

View full text Add to dashboard Cite

Porous silicon (PS) fabrication, changes in the optical properties and surface modi¯cation in the oxidized PS (dipped into the Glucose oxide) due to the in¯ltration of biomolecules using Luminescence Spectrophotometer [Photoluminescence (PL)], Fourier Transform Infrared Spectroscopy (FTIR), and Scanning Electron Microscope (SEM) were studied. The surface morphology of oxidized PS (OPS) and treated with Glucose have been studied by SEM. Spontaneous imbibition weight was calculated theoretically using imbibition equation for the porous medium using glucose solution as the wetting liquid. FTIR analysis revealed that, the strong Si-H, Si-O-Si bonds which covered most of the OPS surface. In the glucose treated PS layer, the amide I (C¼O) stretch and amide II (C¼N) stretch (1690 cm À1 and 1551 cm À1 Þ groups were appeared in the spectrum which con¯rmed the coupling reaction. E±cient visible Photoluminescence was obtained at around 624 nm from glucose treated porous silicon. The functionalization of glucose with nano structured PS, changes light emission over the surface of OPS. It can be applied in optical biosensor and which can be used in biomedical applications.

show abstract

“…However, these nanostructures have limited versatility to tune the photonic stopband (PSB) of PCs, are restricted to 3D nanostructures, feature defects that act as light scattering centers, require long synthesis processes (>24 h), and are constrained to small areas (mm 2 –cm 2 ) [ 22 ]. Another prime example of nanoporous PC platform material is porous silicon (pSi), which is typically produced by electrochemical etching of silicon in hydrofluoric acid (HF)-based electrolytes [ 23 , 24 , 25 ]. Although, pSi presents excellent optoelectronic properties to develop optical sensing systems, its practical application is limited by its poor chemical stability without additional passivation steps, its fragile mechanical strength, and its fabrication process, which requires the use of extremely hazardous HF-based electrolytes [ 26 , 27 ].…”

Section: Introductionmentioning

confidence: 99%

Nanoporous Anodic Alumina Photonic Crystals for Optical Chemo- and Biosensing: Fundamentals, Advances, and Perspectives

et al. 2018

View full text Add to dashboard Cite

Optical sensors are a class of devices that enable the identification and/or quantification of analyte molecules across multiple fields and disciplines such as environmental protection, medical diagnosis, security, food technology, biotechnology, and animal welfare. Nanoporous photonic crystal (PC) structures provide excellent platforms to develop such systems for a plethora of applications since these engineered materials enable precise and versatile control of light–matter interactions at the nanoscale. Nanoporous PCs provide both high sensitivity to monitor in real-time molecular binding events and a nanoporous matrix for selective immobilization of molecules of interest over increased surface areas. Nanoporous anodic alumina (NAA), a nanomaterial long envisaged as a PC, is an outstanding platform material to develop optical sensing systems in combination with multiple photonic technologies. Nanoporous anodic alumina photonic crystals (NAA-PCs) provide a versatile nanoporous structure that can be engineered in a multidimensional fashion to create unique PC sensing platforms such as Fabry–Pérot interferometers, distributed Bragg reflectors, gradient-index filters, optical microcavities, and others. The effective medium of NAA-PCs undergoes changes upon interactions with analyte molecules. These changes modify the NAA-PCs’ spectral fingerprints, which can be readily quantified to develop different sensing systems. This review introduces the fundamental development of NAA-PCs, compiling the most significant advances in the use of these optical materials for chemo- and biosensing applications, with a final prospective outlook about this exciting and dynamic field.

show abstract

Photonic porous silicon as a pH sensor

Cited by 24 publications

References 27 publications

Thermally Carbonized Porous Silicon and Its Recent Applications

Thermally Carbonized Porous Silicon and Its Recent Applications

Functionalization of Biomolecules With Nanostructured Porous Silicon for Biomedical Application

Nanoporous Anodic Alumina Photonic Crystals for Optical Chemo- and Biosensing: Fundamentals, Advances, and Perspectives

Contact Info

Product

Resources

About