Liquid heating can cause denaturation of sensing layer in SAW biosensors

Suthar, Kamlesh J.; Sankaranarayanan, Subramanian K. R. S.; Richardson, Mandek; Bhethanabotla, Venkat R.

doi:10.1109/icsens.2013.6688383

Cited by 3 publications

(3 citation statements)

References 4 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In general, the surface nanoscale “earthquake” and acousto‐thermal heating effects are the two main reasons for the weakened binding force at the ice/structure interface. According to the literature, [ 13,31 ] the amplitudes of surface vibrations are directly proportional to both the applied power and the wavelength. The acousto‐heating effect is inversely proportional to the frequency which means the smaller wavelength leading to a more significant heating effect.…”

Section: Resultsmentioning

confidence: 99%

“…[ 28 ] Once the ice nucleolus is formed, the nanoscale “earthquake” effects on the device surface induced by SAW cause significant surface vibrations and thus decrease the adhesion of the ice nucleolus formed on the surface. Simultaneously, the acousto‐thermal effect (SAW radiation and energy dissipation as well as the associated Joule thermal effect) introduces localized thermal energy at the ice/structure interface which leads to the increase of temperatures of solid surface and surrounding liquid [ 13,29–31 ] as illustrated by the thermal gradient shown in Figure 1d. According to Equations () to (), the increasing temperature ( T ) at the ice–structure interface will increase the ice nucleation critical free energy Δ G * and decrease the ice nucleation rate J ( T ), which means that the ice nucleation is restricted.…”

Section: Theorymentioning

confidence: 99%

See 1 more Smart Citation

Nanoscale “Earthquake” Effect Induced by Thin Film Surface Acoustic Waves as a New Strategy for Ice Protection

Yang

Tao

Hou

et al. 2020

Adv Materials Inter

View full text Add to dashboard Cite

Ice accretion often poses serious operational and safety challenges in a wide range of industries, such as aircraft, wind turbines, power transmission cables, oil field exploration and production, as well as marine transport. Great efforts have been expended to research and develop viable solutions for ice prevention. Effective ice protection techniques, however, have yet to be developed. Ice prevention measures that are currently available often consume significant amounts of de‐icing chemicals or energy, and these approaches are expensive to operate and have long‐term economic and environmental impacts. Here, a new ice protective strategy based on thin film surface acoustic waves (SAWs) is proposed that generates: nanoscale “earthquake”‐like vibrations, acoustic streaming, and acousto‐heating effects, directly at the ice–structure interface, which actively and effectively delays ice nucleation and weakens ice adhesion on the structure surface. Compared with the conventional electro‐thermal de‐icing method, the SAW approach demonstrates much‐improved energy efficiency for ice‐removal. The potential for the dual capability of autonomous ice monitoring and removing functions using the SAW generation elements as transducers is also explored.

show abstract

Section: Resultsmentioning

confidence: 99%

Section: Theorymentioning

confidence: 99%

Nanoscale “Earthquake” Effect Induced by Thin Film Surface Acoustic Waves as a New Strategy for Ice Protection

Yang

Tao

Hou

et al. 2020

Adv Materials Inter

View full text Add to dashboard Cite

show abstract

“…Our previous experimental and numerical studies indicate that Rayleigh acoustic wave streaming can cause viscous heating of a liquid droplet on the surface of the SAW device [30]. This heating might influence the sensing and can be a drawback during NSB removal.…”

Section: Resultsmentioning

confidence: 99%

Design of a Portable Orthogonal Surface Acoustic Wave Sensor System for Simultaneous Sensing and Removal of Nonspecifically Bound Proteins

Bhethanabotla

2019

Sensors

View full text Add to dashboard Cite

One challenge for current surface acoustic wave (SAW) biosensors is reducing nonspecific adsorption. A device propagating Rayleigh and shear horizontal surface acoustic waves in orthogonal directions fabricated in ST quartz has the capability of achieving simultaneous detection and nonspecific binding (NSB) protein removal. Current measurement methods for a SAW sensor system based on this device require large-size and expensive equipment such as a vector network analyzer (VNA), signal generator, and frequency counter, which are not suitable for portable, especially point-of-care, applications. In this work, a portable platform based on a direct digital synthesizer (DDS) is investigated for the orthogonal SAW sensor, integrating signal synthesis, gain control, phase/amplitude measurement, and data processing in a small, portable electronic system. This prototype was verified for both stability and repeatability, and the results matched very well with VNA measurements. Finally, system performance in real-time sensing and NSB removal was evaluated.

show abstract

Heating of Rayleigh surface acoustic wave devices in 128°YX LiNbO<inf>3</inf> and ST X quartz substrates

Desrosiers

Bhethanabotla

2017

2017 Ieee Sensors

View full text Add to dashboard Cite

Liquid heating can cause denaturation of sensing layer in SAW biosensors

Cited by 3 publications

References 4 publications

Nanoscale “Earthquake” Effect Induced by Thin Film Surface Acoustic Waves as a New Strategy for Ice Protection

Nanoscale “Earthquake” Effect Induced by Thin Film Surface Acoustic Waves as a New Strategy for Ice Protection

Design of a Portable Orthogonal Surface Acoustic Wave Sensor System for Simultaneous Sensing and Removal of Nonspecifically Bound Proteins

Heating of Rayleigh surface acoustic wave devices in 128°YX LiNbO<inf>3</inf> and ST X quartz substrates

Contact Info

Product

Resources

About