Results 111 to 120 of about 43,829 (291)

Photoacoustic properties of softmagnetic amorphous Fe81B13Si4C2 ribbon

open access: yes, 1998
Photoacoustic properties of amorphous Fe81B13Si4C2 ribbons were investigated. The amplitude and phase photoacoustic spectra were measured as a function of the modulation frequency of an He–Ne laser beam.
Blagojević, Vladimir   +6 more
core   +1 more source

Programmable three‐state nanoreactor for spatiotemporally controlled tumor therapy

open access: yesBMEMat, EarlyView.
The OMVs are shielded with a biocompatible Da–Ca shell, which prolongs its circulation period and promotes intratumoral accumulation. Importantly, the biocompatible Da–Ca shell can be controllably disintegrated in tumor microenvironment by using laser irradiation, generating in situ hyperthermia and releasing Ca2+.
Guihong Lu   +12 more
wiley   +1 more source

Photoacoustic Spectroscopy of Biological Photoreceptor Membranes

open access: yes, 1988
The most important systems involved in photoreception are the visual and photosynthetic membranes. One of the most striking facts about these systems is the existence of ordered structures or pigments in the organel4 les.
Leblanc, R. M   +3 more
core   +1 more source

Dual-comb photoacoustic spectroscopy

open access: yes, 2020
Spectrally resolved photoacoustic images often require the acquisition of data for each wavelength separately. Here, the authors use dual frequency-comb spectroscopy for photoacoustic measurements, enabling spectrally resolved measurements without the ...
Ian Coddington   +13 more
core   +1 more source

Near‐infrared light‐activated aptamer‐based nanoprobe for spatiotemporally resolved detection of L‐lactate in colorectal cancer

open access: yesBMEMat, EarlyView.
A near‐infrared (NIR) light‐activated “lock‐key” nanodevice is reported for spatiotemporally resolved detection of intratumoral L‐lactate. The system stays silent until deep‐penetrating NIR light remotely unlocks its function, allowing for precise sensing within tumors.
Siyu Pan   +8 more
wiley   +1 more source

MEMS Actuators for Optical Microendoscopy

open access: yesMicromachines, 2019
Growing demands for affordable, portable, and reliable optical microendoscopic imaging devices are attracting research institutes and industries to find new manufacturing methods.
Zhen Qiu, Wibool Piyawattanametha
doaj   +1 more source

Special issue on photoacoustic tomography. [PDF]

open access: yes, 2019
Biomedical photoacoustic (or optoacoustic) tomography (PAT), or more generally, photoacoustic imaging (PAI), has been an active area of study and development in the last two decades [...
Xinmai Yang   +9 more
core   +1 more source

Bridging the translational gap in clinical nanomedicine: From rational design to clinical reality

open access: yesBMEMat, EarlyView.
Nanotechnology offers a multi‐faceted approach to modern healthcare, encompassing high‐sensitivity diagnostic imaging, innovative vaccine delivery, and targeted therapeutics. This review explores how these nanomedicine applications address critical challenges in cancer recurrence and the treatment of neurologic and respiratory diseases to combat rising
Ahmed H. Ghonaim   +9 more
wiley   +1 more source

Thermally launched photoacoustic waves

open access: yes, 1994
Photoacoustic waves can be generated by submicron sized particles that absorb radiation and transmit heat to a surrounding fluid. When the thermal expansion coefficient of the absorbing body is small, a photoacoustic effect is not produced until heat ...
Cao, Y.   +9 more
core   +1 more source

Clinical photoacoustic imaging of cancer [PDF]

open access: yes, 2016
Photoacoustic imaging is a hybrid technique that shines laser light on tissue and measures optically induced ultrasound signal. There is growing interest in the clinical community over this new technique and its possible clinical applications. One of the
Keerthi S. Valluru, Juergen K. Willmann
core   +1 more source

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