Abstract:
The present invention relates to novel nano- and micro-electromechanical devices and novel methods of preparing them. In one aspect, the invention includes methods of preparing a nanodevice. In certain embodiments, the methods comprise coating a polymer layer with a first at least one thin solid material layer using atomic layer deposition (ALD), thus forming an ALD-generated layer. In other embodiments, the methods comprise patterning the first at least one thin solid material layer to form a nanodevice. In yet other embodiments, the methods comprise releasing the nanodevice from the polymer layer.
Abstract:
The present disclosure relates optical imaging devices and methods useful in biological and medical imaging applications. In one embodiment, an optical imaging device includes a flexible lightguide having a first end and a second end, the output of the source of pulsed infrared radiation being optically coupled to the first end of the flexible lightguide; a lens assembly attached to and optically coupled to the second end of the flexible lightguide, the lens assembly comprising a variable-focus lens element, the a variable-focus lens element having a tunable focal length; and a photodetector coupled to the flexible lightguide to detect radiation propagating from the second end toward the first end of the flexible lightguide. The optical imaging devices and methods can be used in both confocal and multi-photon techniques.
Abstract:
The present disclosure relates generally to methods and systems useful in imaging applications, especially biological imaging applications, and applications in the metrology, atmospheric, scientific and medical fields. In one aspect, the disclosure provides a method of imaging an object, including illuminating the object with incident radiation through one or more adaptive optical elements; receiving transmitted radiation from the object at a photodetector to provide a base image; and performing the following steps one or more times: adjusting the one or more adaptive optical elements, the adjustment including modifying an optical transfer function of the one or more adaptive optical elements, and receiving transmitted radiation from the object at the photodetector to provide an adjusted image; wherein the adjustment and receiving steps are performed until the adjusted image has substantially reduced aberrations compared to the base image.
Abstract:
A microlens array includes a bottom electrode chip, a sidewall electrode chip, and a top glass chip configured to cooperate to define an array of cavities, each one of the array of cavities containing a fluid. The fluid is a mixture of a polar liquid and a non-polar liquid, in contact with one of the array of sidewalls at a contact angle. The bottom electrode chip includes a plurality of electrical contacts. The sidewall electrode chip includes an array of sidewalls, each including an electrode layer and an insulator layer. When a voltage is applied across the fluid contained a cavity via electrical contacts and the electrode layer of the cavity, the contact angle of the fluid with the sidewall is modified, in embodiments without affecting the contact angle of fluid contained in other ones of the plurality of array of cavities.
Abstract:
Wide-angle beam steering using two or more variable lenses to form a small-angle beam steering element, along with a numerical aperture converter and a wide-angle lens. The small-angle beam steering element might comprise either one- or two-dimensional beam steering with tunable liquid lenses.
Abstract:
Wide-angle beam steering using two or more variable lenses to form a small-angle beam steering element, along with a numerical aperture converter and a wide-angle lens. The small-angle beam steering element might comprise either one- or two-dimensional beam steering with tunable liquid lenses.
Abstract:
Electrowetting-actuated optical shutters based on total internal reflection or beam steering. An electrowetting cell contains a conducting liquid and a non-conducting liquid configured to form a liquid-liquid interface extending to the inner walls of the cell. A beam of light is directed to the liquid-liquid interface at an angle near the total internal reflection angle of the interface. Voltage changes the shape of the liquid-liquid interface, without separating it from the inner walls of the cell. Thus, when depending on the voltage applied, the beam is either transmitted in part or substantially totally internal reflected.
Abstract:
The present invention relates to novel nano- and micro-electromechanical devices and novel methods of preparing them. In one aspect, the invention includes methods of preparing a nanodevice. In certain embodiments, the methods comprise coating a polymer layer with a first at least one thin solid material layer using atomic layer deposition (ALD), thus forming an ALD-generated layer. In other embodiments, the methods comprise patterning the first at least one thin solid material layer to form a nanodevice. In yet other embodiments, the methods comprise releasing the nanodevice from the polymer layer.