摘要:
Apparatus and methods for optically assaying an analyte borne on a support use a light source (24) to irradiate a sample of analyte (26), a light from which is received by a group of memory cells in a dynamic RAM (28) over a given exposure time. The exposure may be repeated over different exposure times. The characteristic of the analyte to be determined is assayed by measurement of the states of the memory cells after such exposure(s).
摘要:
An information holding device comprising a pair of substrates (26, 27) whose opposing surfaces are formed with one electrode (29) and the other electrode (30) so that they may oppose, a dielectric (31) which is held between said pair of substrates (26, 27), means (21) to change a capacitance of the dielectric (31) in the opposing part between said one electrode (29) and said other electrode (30), means (20) to apply a voltage varying with time to the dielectric of said opposing part, and means (23) to detect principally a displacement current flowing through the dielectric of said opposing part.
摘要:
Die Erfindung betrifft eine Anordnung zur Umwandlung von Informationen aus der elektrischen Form in die optische Form (und umgekehrt), wobei die optische Informationsform eine in einer, zwei oder drei Richtungen zeitlich variierende Lichtintensität ist und wobei die Umwandlung der Informa tion aus der elektrischen in die optische Form durch opti sche Modulatoren, z. B. Flüssigkristalle, erfolgt und die Um wandlung aus der optischen Form in die elektrische Form durch Fotodetektoren erfolgt. Die optischen Modulatoren und die Fotodetektoren werden zeitlich von einem oder mehreren elektrooptisch rückgekoppelten Kreisen ge steuert oder abgetastet, in denen sich mindestens ein opti scher Modulator 2 im Strahlengang zwischen mindestens einer Lichtquelle 3, z. B. einer Leuchtdiode oder Laserdiode, und mindestens einem Fotodetektor 4, z. B. einem Fotowi derstand oder einer Fotodiode, befindet. Der Fotodetektor 4 ist in mindestens einen elektrischen Kreis 4, 5, 6 einge schaltet, an welchen der optische Modulator 2 derart ange schlossen ist, daß man über einen Rückkopplungskreis, dessen Verhalten - in Kreisrichtung gesehen - bestimmt wird durch die Lichttransmission des optischen Modulators 2, die elektrische Eigenschaft des Fotodetektors und das elektrische Eingangssignal des optischen Modulators 2, eine positive und negative Rückkopplung erhält. Die elek trooptisch rückgekoppelten Kreise können auch mehr als einen optischen Modulator und Fotodetektor enthalten, aus denen eine elektooptisch rückgekoppelte Kreuzschaltung aufgebaut wird.
摘要:
In accordance with a first aspect of the present disclosure, a storage device is provided, comprising: a capacitor configured to be charged; a charge circuit configured to charge said capacitor; a pass device coupled between the charge circuit and the capacitor; a control circuit configured to control said pass device; a photosensitive diode coupled between the control circuit and the pass device, such that an input voltage provided by the control circuit to the pass device is reduced if the storage device is exposed to light. In accordance with a second aspect of the present disclosure, a corresponding method of producing a storage device is conceived.
摘要:
A nanophotonic nanopore (100) is provided, comprising a nanopore (110) and an optical waveguide (105). The optical waveguide (105) is optically coupled to the nanopore (110) so that a transmission, reflection, emission or absorption property of the optical waveguide (105) is modified by an analyte received by the nanopore (110).
摘要:
An optical memory (100) in which data is stored in an optical data layer (190) capable of selectively altering light such as by changeable transmissivity. Data is organized into a plurality of regions or patches (called pages) in which each page contains a field of data spots storing binary data as the presence or absence of a hole. The data is illuminated by controllable light sources (150) and an array of single element diffractive imaging lenslets (210), one for each data page, projects the image onto a common array of light sensors (270).
摘要:
An all-optical flip-flop device is achieved by employing two optical amplifiers (150,160) arranged so that they together operate in only one of two stable states at a given time. In a first stable state of operation, the first optical amplifier (150) behaves as a laser having a first predetermined characteristic wavelength. The arrangement is switched to a second stable state of operation in which the second optical amplifier (160) behaves as a laser having a second characteristic wavelength, where the first and second characteristic wavelengths are at least nominally different, when an optical signal pulse is received at the input (SET) of the first optical amplifier. The arrangement is switched back to the first stable state when an optical signal pulse is received at the input (RESET) of the second optical amplifier.
摘要:
A semiconductor optical memory device comprises a semiconductor layer (11) formed with a plurality of elemental recording areas (201 - 20n) each having a size generally equal to a wavelength of the optical beam, and a plurality of quantized regions (11c, 11e) formed in each elemental recording area of the semiconductor layer, wherein each of the quantized regions has a quantized energy level and absorbing an optical radiation of which wavelength is pertinent to the quantized energy level of that quantized region by forming first type carriers having a first polarity and second type carriers having a second, opposing polarity. Each of the quantized regions comprises a semiconductor material confined in at least two mutually perpendicular directions to form said quantized energy level and has the optical absorption wavelength that is different from that of other quantized regions included in each elemental recording area.